Virga here and there, chance of sprinkles through early afternoon, then blammo, clearing as wind shift aloft makes it way across Oro Valley/Catalina. CLouds will consist of Cumulus mediocris virgae, small Cumulonimbus capillatus virgae. Cloud bases will be below freezing and higher than Ms. Mt. Lemmon, so will be tough to get rain down to the lower elevations, though a virga trail may hit The Lemmon. Tops of Cu, -15 C to -25 C, i.e., cold enough for ice formation, of course. Crystals will be mostly stellars and dendrites with some clustering into aggregates we would normally call “snowflakes.” Some of the very coldest tops will contain some solid columns, maybe some prisms and hexagonal plates.
If you’re having trouble here because you’ve forgotten a few things, you might well want to get your Magono and Lee (1996) ice crystal “bible” and review crystals types and the temperatures they form at. Heck, maybe I’ll just put the first couple pages here for you…Magono and Lee (1966). Everybody had one back then. Very important to have that with you. As a further challenge, I have not rotated two pages to the upright position to make it too easy for you.
I suppose, too, that you COULD hire an small aircraft to go up there and check on these predicted types using the old “black glove” technique of the early 1960s, where a scientist would stick out a black-gloved hand from the passenger side of the aircraft and then report/log the ice crystals he found. Not making this up.
Yesterday’s clouds (something’s “wrong”)
Day started out dusty; ended up dusty.
8:16 AM. Dirt roads ‘n’ dust; that’s who we are. Got some Altocumulus, but they are so high and cold (-30 C) that they transformed into patches of Cirrus (ice) clouds almost immediately. Pretty normal, even at temperatures that low, for a liquid drop to form first, followed by freezing. Weird.
8:23 AM. Here, a real bird, not a fake one, begins to notice something extraordinary; the virga trails from the parent cloud are going the “wrong way”, toward the northeast!8:35 AM. “What’s going on here?”, the photo asks. Well, the virga trail is going FASTER and leading the head or “generating cell” from which it issued, meaning the wind increases with velocity going down, not UP, as usual! Incredible, really! Hardly ever see this. Is it due to global warming/climate change, the polar vortex has maybe turned upside down? I think so. Has annotations on it.
12:07 PM. Then I saw this, a cloud with no name above the Catalinas. Could be the silhouette of a polar bear, eyes and head at lower left looking downard, asking what have we done to it? Its white, too. Can’t be Cu fractus, though a thermal has pushed a damp layer up here, causing the concave shape. You don’t want to fly that small plane in or below this cloud, looking for ice. It would be real bumpy.
Above, through the dust, for some perspective of our ghost “bear.” Pretty cool, huh? I hope there are some left by the time I get done with this blog! Maybe I should check….let’s see what the Canadians (well, one Canadian at U of Victoria) has to say about this dire sitiuation, get informed about stuff. Here’s a link provided by the climate provocateur, and former WA State Climatologist, Mark Albright, who forwarded it to me for my own illumination. I found that post interesting, unexpected…maybe you will, too.
12:39 PM. Iridescence in Cirrocumulus patch. Very pretty for a minute or two, then gone.
3:24 PM. Day ended up cloudy and dusty with some areas looking like sprinkles could have fallen out and reached the ground, but nothing here, and echoes on radar were awful weak when present.
Rain continues to show up on the forecast horizon, which is about 8 days
Best chance of rain, 21st-23rd, mods fuzzy on which day has the best chance. If you love spaghetti, you’ll love this one below. The vast change in the pattern, indicated for almost two weeks now, is just about here. Some mod runs have rain as this “trough bowl” develops, and a strong trough passes through from the west. Seems more likely than not from here that rain will fall as that happens.
Valid for 5 PM AST March 22nd.
The End. (Nice sunrise, lots of Ac cas, Sc, virga around!)
..will be playing your favorite western tunes in the inimitable style of Johnny Cash at the Whistling Cactus Bar and Hitching Post this Friday and Saturday… :} (Hahahaha; “inimitable style of Johnny Cash”; that means Cash’s style can’t be imitated!)1
6:37 AM: I see now that there’s a lot more dust than last evening! Wow. Dusty Sunrise!
4:13 PM. Cumulus fractus. Dust is visible if you look hard on the horizon. The back scattering of sun light from dust aerosols makes them hard to detect looking away from the sun. But looking toward the sun, the sky has a whitish, gritty look as we had yesterday. When smoke aerosols are present, the sun can appear very orange or reddish, not white in the mid-day-afternoon hours. See the photo below, taken in the forward scattering direction, that whitish look near the sun. For those who want to go deeper, this. Images here.4:12 PM. Whitish, gritty dust exits Tucson and envelopes Mark Albright’s house in Marana/Continental Ranch, carried on a SE blast of wind from Texas and NM.
6:11 PM. Same view as above but most of the sun’s white light has been scattered out leaving the longer yellow and orange wavelengths to carry on.6:20 PM. Classic appearance of a dusty sunset.
Satellite image of aerosol content as seen from above (:}. Green area is the dust plume that appeared to originate in SW Texas and southern NM, then blew into Tucson town yesterday afternoon. Looks like its still here this morning. Go here to see more jpegs of aerosols.
Today’s mix of clouds and dust
Cloud action today, likely some small Cu and Ac later today as a weak upper level trough approaches and passes over us. Should be enough clouds around to pose a sprinkle threat. Imagine.
Should be an especially interesting day for cloud watchers since the dust aerosol should get into the small Cu. Sometimes that can lead to much larger cloud droplets in them because the dust particles are so much larger than the usual aerosol stuff that gets into our clouds.
What does that mean?
Will help those lower Cumulus clouds to form raindrops, since the larger the cloud droplet, the higher the temperatures at which ice forms. Sometimes, even drizzle drops, formed from just droplet collisions can result in Cu mediocris clouds with large dust particles in them (no ice involved). Would sure like to have an instrumented aircraft in the clouds of today!
Normally, ice would be expected to form at temperatures below about -10 to -12 C here in AZ. Today, it might be higher with virga falling from shallower clouds than usual.
The weather ahead
Found some rain for ya… March 21st. See those green areas in SE AZ? Been quiet on rain lately. Don’t like to talk about rain when there’s none indicated for two weeks at a time. The rain shown for us on the map above has been coming and going around this date in the model runs, mostly going, actually, but scored one here based on yesterday’s 5 PM AST global data and that has allowed me to take the rain muzzle off.
So….in sum, we can look forward to another chance of rain in March, one just ahead, and, of course, more of “Dusty Sunset” in the meantime leading up to this chance.
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1Saw a vinyl record album with those EXACT words on it in the Durango Market on Main Street, Durango, back in the ’70s when I lived there. Pretty funny, because you KNEW that imitating Johnny Cash was exactly what that singer was going to do!
Valid two weeks from now, Thursday, 5 AM, March 20th. Massive trough, at last, settles into the West for awhile, more in keeping with climo. Keep jackets at the ready. Rain? Dunno yet, but probably on the correct side of 50-50 beginning around the 17th. Changes! Warm and dry for a coupla days, followed by a parade of troughs, quite a few minor ones over the next week or so, before the Big One forms. Above, this is a VERY strong signal in the spaghetti for two weeks out, and so got pretty excited when I saw it, as you are now, too. So, when mid-March arrives, get ready!
Was going to close with this NWS forecast for Catalina (might be updated by the time you link to it), but then saw just now that Saturday, the day a cold, dry trough is over us, it’s predicted to be 76 F here in Catalina, too warm. I would prepare for upper 60s.
Canadian model has even had rain near us at times as this trough goes by on Saturday, but only here in the 11th hour (from yesterday’s 5 PM AST run) has the US model indicated that the core of the trough and rain near us on Saturday, as the Canadian one had for a few days before that. Hmmm…
The fact that any trough is ending up stronger than it was predicted, as the one on Saturday, is a good sign of being close to the bottom (farthest S lattitude) of the “trough bowl”, that location where troughs like to come and visit. So, maybe this is a precursor for us, this unexpected little cool snap on Saturday. Maybe climatology is beginning to work its wonders at last in the West.
Powerful storms begin affecting the interior of the West and Great Basin in 10 days, and that pretty much marks the time when the winds here start to pick up to gusty at times as strong low centers develop to the north of us, and the major jet stream subsides to the south toward us.
It will be the end of the warm winter era for us, too. While cold settles in the West, it will mean very toasty weather back East from time to time, something those folks will greatly enjoy.
———————–Climate issue commentary; skip if you’re happy with the climate as it is now—————————-
As you likely know, much of the upper Midwest had one of its coldest winters ever, and just a few days ago Baltimore (locally, “Ballimore”, as in “Ballimore Orioles”) had its lowest measured temperature EVER in March, 4 F!
“RECORD EVENT REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
0930 AM EST TUE MAR 04 2014
…DAILY AND MONTHLY MINIMUM TEMPERATURE RECORDS SET AT BALTIMORE
MD…
A DAILY RECORD MINIMUM TEMPERATURE OF 4 DEGREES WAS SET AT BALTIMORE MD TODAY…BREAKING THE OLD RECORD OF 5 SET BACK IN 1873.
THE MINIMUM TEMPERATURE OF 4 DEGREES FROM TODAY WAS ALSO THE LOWEST MINUMUM TEMPERATURE RECORDED ON ANY DAY IN MARCH FOR BALTIMORE. THE PREVIOUS RECORD MINIMUM TEMPERATURE FOR MARCH WAS 5 DEGREES ON 4 MARCH 1873.”
(Thanks to Mark Albright for this official statement; emphasis by author)
If you’ve followed some media reports, the exceptional cold of this winter has been attributed to global warming, a hypothesis that has been questioned by climo Big Whigs. However, if it is right (which even lowly C-M doubts), parts of the upper Midwest may become uninhabitable due to cold in a warming world, quite a weather “oxymoron.”
Also, if you’ve been hearing about weather extremes and global warming (AKA, “climate change”) you really should read this by a scientist I admire, Roger Pielke, Jr., at Colorado State Univsersity, his rebuttal to a Whitehouse science adviser’s characterization of his testimony before Congress about weather extremes (they’re not increasing).
What seems to be happening in climate science is the opposite of what our ideals are. Our conglomerate of climate models did not see the present “puzzling” halt to global warming over the past 15 years or so as CO2 concentrations have continued to rise. However, instead of being chastened/humbled by this failure, some climate scientists seem emboldened and only are shouting louder about the danger ahead. Presently we are struggling with a number of hypotheses about why the hiatus has occurred (e.g., drying of the stratosphere which allows more heat to escape the earth, more aerosols in the stratosphere in which incoming sunlight is dimmed some as it was due to the Pinatubo eruption in 1991, ocean take up of extra heat, the Atlantic Meridional Overturning Current slowing down, causing northern hemisphere continents to cool off.)
UPdating at 8:28 AM: This from the “current”issue of Science (Feb 28th) about the Global Warming Hiatus (GWH): It might be due to the cold waters of the eastern Pacific, now reigning year after year almost for the whole time of the “hiatus.” (BTW, you’ve heard of it, haven’t you, that hiatus in rising global temperatures? If not, write to your local media sources about this. Its pretty important.) Science mag is $10 if you want to buy it off the newstand.
What ever the cause of the puzzling hiatus in warming, it was not accounted for in our best models right from the get go, and so, naturally there SHOULD be caution on everyone’s part until we know what happened and can get it right in those many climate models..dammitall! Unless we know what done it, how else can we have confidence that they are going to be very accurate 100 years out????
———————————————end of climate issue/rant module————————–
Here are a couple of nice sunset scenes from March 4th, that same day it was SO COLD in Ballimore, these to help you cool off personally after I got you pretty worked up with climate issues. Hope I didn’t spoil your day, and try not to be mad at work thinking about it.
6:19 PM. Row of Cirrus lenticulars appears below CIrrus/Altostratus layer. I think they were too high to be Altocumulus lenticulars, and dissipated into ice puffs right after this shot.6:31 PM. Cirrus spissatus (thicker parts) with strands from Cirrus uncinus under lit by the sun.
Rain beginning to pile up again in Cal as behemoth Pac storm moves in. See an actual, professional level weather map below, not a mickey mouse one. It will be good for you to see a complex weather map with all kinds of weather symbolia on it:
0.01 inches at Opids Camp, LA area mountain site, already (at 5:30 AM AST) out of predicted by C-M of 10 inches or so in the next 24 h; highest totals somewhere in central and southern Cal mountains likely between 10 and 20 inches for this one storm! California dreamin’1? Will keep you posted if I am right.
Here?
Really tough to forecast more than an inch in one winter’s day in a desert. Goes against the grain and the cactus, for that matter. Thought I would get some help from the great U of AZ Beowulf Cluster, but its still crunching the 11 PM AST data away as I write here at 5:30 AM. So, can’t wait for a really accurate answer. You should go there, though to get one….
Being crude, then, and I mean using a model with a huge grid spacing compared to that of the U of AZ Cluster model, the Canadian GEM indicates about 36 h of rain, 5 AM AST tomorrow to about 5 PM on Sunday, and even at a average of 0.05 inches over that time, you get 1.80 inches! Good grief. So, maybe now that BIG forecast by a BIG atmos sci faculty member at Colo State, “1.5 to 2 inches”, might be right, closer than my dinky 1 inch max forecast of yesterday. Its great to be wrong when you under forecast precip, but that’s about the only time!
Higher resolution US WRF-GFS mod run from 5 PM AST last evening has fewer hours of precip, BTW, partly because it DOES resolve the forecast in 6 h blocks, not 12 h ones like the crude Canadian model.
Also, the winds above us, being more westerly than southerly during the coming storm, is better for us here in Catalina. Deep southerly flows have to go over Pusch Ridge, and rain can be diminished locally that bit due to the downslope effect off the Ridge. Won’t have that tomorrow and Sunday, so that’s a plus.
The cut to the chase: minimum from this typewriter now HAS to be much higher than 0,25 inches as was indicated previously. Will go to 0.75 inches as the LEAST we’ll get (things don’t go well, main bands just miss Catalina, etc), with 1.5 inches as max by Sunday evening 5 PM.
Will not mention this forecast again, of course, if the rain in Catalina is outside these limits.
Yesterday’s clouds
Nice patterns and nice small Cu yesterday with great visibility again.
1:53 PM Finely granulated, and with a bit of color (iridescence) Cirrocumulus. Here, the Cc is at mid-levels, not at Cirrus levels. In our cloud classification scheme, which is a little funky, its only the tiny granulations that make it Cc and not Altocumulus. Happens a lot.
5:13 PM. Delicate Cirrus uncinus (hooked Cirrus).
6:18 PM. Sunset Cirrus uncinus, so pretty.
The End, except for a little peak at Opids Camp rain just now… Wow, was just 0.01 when I looked at the 3 AM ob, and at 6 AM is already over an inch!
Hope, too, you caught the beautiful sunrise just now. Will reprise it tomorrow.
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1Some of you will instantly recall the initial words to this pop tune:
“All the leaves are brown, and the sky is gray, I went walkin’ for awhile on a winter’s day.”
These words were inserted after the “Mamas and the Papas” poke at LA smog in the original words were deemed by producers as less desirable in seeking a commercial hit. The original words that the song began with, before it was commercialized, were” “All the leaves are gray, and the sky is brown”, words that might offend Californians. Thought you’d like to know.
BTW, this video above is a PERFECT paradigm for this year’s sunny, warm and dry weather in the West, and the brutal winter back East. Take a look! Its great!
As much as 1-2 inches as far south as Ventura County so far, 3-4 inches in the coastal mountains of central Cal as of just now (4 AM AST). Rolling 24 h Cal State archive here. LA area rain here; keep an eye on Opids Camp and Crystal Lake FC. Totals in NW LA County just now going over an inch. Following this drought bustin’ sequence, while just a” two shot wonder”, will be like watching….I don’t know..something really exciting, a weather kind of Olympics, where the favored team “drought” is taken down unexpectedly by some upstart storm. Yes, I will play the Olympics card.
And remember, this is just the lightweight division today; up next, beginning Friday in southern Cal: “Sumo wrestling”, as a 400-lb storm moves in next to push aside “Team Drought” at least for the moment. (Is Sumo wrestling an Olympic sport?) Still expecting some jumbo rain totals in the mountains of southern Cal, such as more than 10 inches at places like Opids Camp in the San Gabriel Mountains.
Speaking of jumbo totals, a friend and expert weather forecaster (and big atmos sci faculty member at Colorado State who now lives part time in Catalina), sent a stunning e-mail to me yesterday expressing his opinion that Catalina will get “1.5 to 2 inches of rain” from the second “Sumo” storm, the one that eases into Arizona late Friday and arrives here by dawn on Saturday, and then continues for around 24 h. Cloud maven here can’t go that high in his guess, doesn’t have the “testicularis” you might say, to go that high; 1 inch max is all I can come up with, but would be ecstatic if in error!
Still, this is going to be FANTASTIC! Saw some perennial wildflower blooms on the trails yesterday (see below), ones in need of a little pick-me-up–actually a big one, and this will be great for them. Fauna, too, will be happy! It may be too late for the annuals…not sure. Poppies are few, and awfully stunted this year, as many of you know.
Don’t forget, too, before our storm; those gorgeous skies! Have camera and pen ready to document and make notes about them in your weather diaries Those skies we’ll be fantastic, too, like yesterday, which was a great day to be on a horse, watching the sky.
Even when its raining the skies will be fantastic!
How many of us, even if we’re from Seattle, are STARVED for low gray, dank and dark daytime rainy skies, clouds chopping off the Catalinas a thousand feet above us, listening to rain pounding on our roofs, then running off roof making puddles, those richer shades of desert green after the rain ends, the glistening, water-covered rocks on the Catalinas in the morning sun after the storm? Its a real treasure when rain falls here.
Yesterday’s clouds
12:23 PM. You got yer Cis spis (Cirrus spissatus) topping a few Cu fractus and humilis, if I may. It was so great to see those Cumulus clouds, reminding us that July and huge clouds are only about 125 days away!12:23 PM. You got yer Cirrus uncinus. Note fine strands hanging down. Amazing they can be so perfect, not erratic (see arrow), when the wind up there is about 100 mph!
3:54 PM. A great line of a Ac lenticular advanced over Oro Valley. This shot was about the best I got and its not that great.
3:55 PM. Not all about clouds..wanted to show you that I have more than one dimension. Here, a wild onion bloom maybe, slightly out of focus. Prickly pear is in focus, though.3:55 PM. Very nice Altocumulus lenticularis formed later in the afternoon downwind from the Catalinas.6:25 PM. Another very nice sunset due to some Cirrus spissatus and a few lower Altocumulus clouds.
On the weather horizon
Mods still have unusually warm weather here in the storm after life, 8-12 days out (cold in the East continues, too). But, then some Catalina rains continue to show up after that hot spell when you think May is already here.
That thick (likely more than 3 km, or more than 10,000 feet) and steady gray sky diet of Altostratus opacus clouds didn’t provide a lot of visual highlights most of yesterday, in contrast to the many Altocumulus flocculations of the day before. An example of yesterday’s sky for most of the day:
3:50 PM. Altostratus opacus. Or is it? Not much going on here1.
Virga hung down here and there, and some radar echoes during the day suggested a sprinkle here and there reached the ground, but none here.
Later, as usually happens, the tops of the clouds lowered, as did the bases, and we had some pretty Altocumulus again, some with long trails of virga, indicating a deep moist layer below cloud bottoms. For a time, as dewpoints rose, it looked like Ms. Lemmon might be topped with Sc, but those lowest clouds did not get quite low enough.
5:14 PM. Two layers of Altocumulus are present, the lower one having spires (Ac castellanus). Nice lighting on mountains.
5:08 PM. Two layers of Altocumulus are present, the lower one having spires (Ac castellanus), to repeat.
6:23 PM. Heavy virga issues from an old Altocumulus cloud, its once higher, pyramidal or mounding top has collapsed as snow developed in it and in essence, hangs down in an upside down version of what it once was (though not as tall as the virga is long here).The Tucson balloon sounding (rawinsonde) for 5 PM AST (launched about 3:30 PM, and rise at about 1,000 feet a minute.) BTW, takes about an hour and a half to get the whole depth normally measured, to around 100, 000 feet. During that time, or even during the first hour, the atmo is changing, so when its at 40,000 feet, what is measured at 3,000 feet isn’t the same anymore. Introduces slight error into models into which these data get fed. Models think its an instantaneous view of the atmo over Tucson at 5 PM AST (00 Z time). I think you should know this. Note tops of that Ac with heavy virga were about -30 C (-22 F)! Notice, too, that some of those higher, colder Altocumulus flakes are not showing virga in the sunset photo above.
Weathering just ahead….
Rain One (“Little Bro”) is moving onto California coast as I write. Residents in towns like the very-expensive-to-live-in Monterrey rejoicing as drops patter on rooftops now! The negative news here is that the Canadian model has lessened the area of rain in Arizona as Rain 1 passes over us, confines the rain to central and northern AZ mountains now, still light, but not as widespread as before.
At the same time, the US WRF-GFS model has been adding rain in AZ from Rain 1; previously it had NONE. Now, these mods have now come together over us2 to quote a song title from the last century, both showing about the same thing, so that’s probably what will happen. Just rain to the north of us. So, a little less of a close call to Catalina tomorrow as Rain 1 goes by. Just middle and high clouds for us, and probably some virga, nice sunrises and sunsets.
Rain 2, “Big Bro” moves into southern Cal tomorrow night, and still looks like a real and necessary pounder for southern Cal before moving on and drenching little Catalina. Will report on those SC amounts to see how big they get, too.
Rain should be falling here in Catalina by Saturday dawn and continue all day. Range of amounts, still a not-so-great quarter inch on the bottom (if things don’t go well), but top (if things go really well) still an inch! How great would that be? So, best guess about 0.60 inches here in Catalina, from averaging those two “extrema.” Later today, our U of AZ Beowulf Cluster model computations will start to have some quantitative amounts from actual calculations, not just a SOP guess from yours truly. Check here at the U of AZ later in the day for accumulated totals based on this morning’s 5 AM AST data.
Way out there
While our drencher on the weekend seems to be a one-shot wonder for at least a week after it passes, the longest view from our WRF-GFS, valid way out on March 13 at 5 PM AST, 360 h from last night’s model run, has another major storm moving into the SW, but this time it doesn’t come from the west, but from the NW. This is a climatological norm; storms tend to move from NW to SE during the spring months in the western US, and so there’s SOME climatology to hang your hat on that the rain forecast below for us may be a real event, not a fantasy storm, as so often happens that far into the future in our models. See the map below, from IPS MeteoStar’s rendering of the WRF-GFS to brighten your day that bit more, knowing one good rain is coming, and maybe, just MAYBE, the pattern is shifting to a normal one with an occasional rain here in Catalina beginning after mid-March.
Valid at 5 PM, March 13. Green areas denote those regions where the model thinks it has rained during the prior 12 h.
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1
3:50 PM. Actual Altostratus opacus. I’ve been talkin’ clouds here for quite awhile, and in a clever kind of a test, wanted to see if you could tell the difference between the side of my gray car and an Altostratus cloud. Its pretty important to me that you get this right.
It doesn’t get any better than this if you need rain and want 10 inches:
Valid at 5 PM AST, Friday, February 28th. Arrow (upper right panel) points to massive sweep of sub-tropical air into southern Cal, the whole SW really. This from the Canadian Global Environmental Model (GEM) based on last evening’s data.
Actually, 10 inches in a day is not so unusual in the mountains of southern California, which is something that’s going to happen if this model output verifies this weekend. Also, the storm takes a couple of days to go through, and so mountain totals of 10-20 inches are likely in the favored locations. Coastal areas would likely see 2-6 inches I think now with this configuration.
Twenty four hour totals of more than 25 inches of RAIN were observed in the southern California mountains in January 1943, and again in January 1969, to put a forecast of “just” 10 inches in one day in perspective.
Thinking about driving over there, to say, Hoegee’s Camp in the San Gabriel Mountains, where they once got 26 inches in a day (back in ’43). Would really like to see what heavy rain looks like in this basher; rocks coming down onto highways, windy, giant waves along the coast, a real weather hullaballoo. Maybe we should organize a storm tourism trip? Think of all the happy people we’d see, too, in this muttin’ bustin’ drought bustin’ bustin’ bustin’ bronc bustin’ storm, to kind of get in the rodeo frame of mind here to emphasize to the people of Tucson just how rough it will be on the city folk of southern Cal.
The good news here is that predicted rains have been increasing here in Catalina and throughout Arizona in the models as well. Maybe it won’t be too late for our spring greening to green up a little more. An inch is now possible here on the top end, minimum likely to be as much as a quarter of an inch (even if mods really off) ending on the 3rd.
Still looking at a close call, maybe some sprinkles before that from the first slug of rain that hits Cal, on Thursday, the 27th of Feb. Much of Arizona should get something from that first rain intrusion.
What a great cloud day it was yesterday! Fabulous.
Here are a few cloud shots:
Can you name them?
Today? Sat imagery makes it look like our middle clouds will be thick enough to produce isolated drops. Be sure to log any that you see.
Very happy to post this breaking future news here on February 24th. Close rain call on the 27th, too, as the first of two significant troughs with their low pressure centers march into California, bringing a drought break there of some consequence. Likely an inch or two in the coastal areas south of SFO (“Frisco”; rhymes with Crisco), and maybe even LA area as well with the first storm. That first one continues across Arizona bringing widespread, though light rains the central and northern mountains on Thursday the 27th.
Valid at 5 PM Thursday, the 27th. Upper left panel shows “little brother” trough over Arizona, and most of State covered by a little precip (lower right panel). Big brother on the move offshore of Cal, flow reaching deep into sub-tropics.
Then “Big Brother” hits Cal beginning on the evening of the 28th, gets here late on the first or early on March 2nd. The LA Basin rains in the second one look like they’ll amount to 2-4 inches, and maybe something from a quarter to half an inch here in Catalinaland when it arrives.
Model?
Canadian GEM (General Environmental Model). Sometimes, like their hockey team, it defeats the US models in weather forecasting, and I am riding the fence that it will this time. In the interest of disclosure, the US WRF-GFS model has virtually NO RAIN in Arizona on the 27th (!), whilst the Canadian one has widespread rains (both using global data from 5 PM AST yesterday). So, I reject the US model, one that takes the first storm too far north to affect AZ much. (This has sometimes been a problem for our US models.)
Second storm?
Both models have rain on the 1st-2nd, but the Canadian, much larger amounts in southern California where I grew up and, while having poor grades after puberty and the realization of girls (!) hit, nevertheless had some success playing baseball. Could be nearly a month’s worth of rain in one storm in the LA area, which averages about 3 inches in Feb and March, both, IF the Canadian model verifies. Those kind of amounts upstream would also mean more rain potential for us here, too. But, the fact that they BOTH have rain, is really great to see. One would think that some rain is pretty much in the bag. I hope they put rain barrels out in Cal!
After the storm…
Oh, me, look at this “Lorenz” (the chaos guy) plot:
Valid March 8th, 5 PM AST. Its awful as a graphic to begin with, but when interpreted its even more awful in the kind of weather it implicates for us as we march farther into March: in one word, Hot and Dry! Easterners won’t like it, either, as the severe winter continues back there, Lake Superior might remain frozen over until April! Jet stream is flowing along the red and turquoise lines, so cold air brought southward where lines aim toward the southeast, as over the eastern US.
A pattern like the one above is hard to maintain in March since the climatology of March-May leads to a trough in the western US. So hoping the awful pattern above will give way by mid-March or soon thereafter, as do easterners I would bet. Below, likely fantasy, since its WAY out on the forecast horizon, but this historic forecast (would produce historically cold weather in the East if it did verify, chances probably less than 30% as a wild guess. I just now saw it and it was AMAZING!
Valid March 11th, 5 PM AST. LOOK at that high pressure area and cold air slamming down east of the Rockies and strong low over New England. Good grief! Would be headlines if it happens.
Yesterday’s clouds
9:22 AM. Great example of Altocumulus perlucidus.1:47 PM. Later became blobby with heavy virga; Altocumulus opacus virgae if you really want to know.6:22 PM. Skipping ahead, these formations led to another in a long series of nice sunset shots. Hope you got one.
Most of us can easily understand the reasoning behind the bounty of media stories and pronouncements by some scientists/White House ones even, describing how global warming has led to such severe winters over the past few years on various continents. It makes perfect sense that as it gets warmer, winters will be colder, more severe in some regions, while other areas, like the SW this year get a global warming face plant.
Furthermore, extreme regional temperature extremes like the ones we have seen in the US this winter have NEVER happened before since 1976-77, and, oh yeah, 1962-63…oops, I guess 1983 had a bad winter back East, too. OK, maybe “NEVER” is too strong… Tree rings have some bad stuff in them, too, before the historical records begin. Lets just say that the “NEVER” above refers to the last 12 months maybe.
Well, as I posted last time, Mike et al (his friends) posted a letter to the uppity journal, Science, saying that attributing these kinds of extremes to global warming was based on evidence that was “not compelling” (i. e, in normal speak, BS, or likely BS1.)
But that’s not the way the Press is treating these claims.
Mike is kind of a complainer, well, actually, I never actually heard him complain about anything, professionally or otherwise whilst at the University of Washington, but anyway, continuing, he sent to our weather e-mail list at that institution kind of a complaint. He observed that his comment in Science questioning the evidence presented in support of the claim that global warming is causing the severe winter in the East, was not getting much play in the Press while the proponents of a not-a-compelling-theory were getting a lot.
Here’s what Mike sent out to us, FYI:
“Here’s a new posting on Andy Revkin’s dot. earth following up on our letter that appeared in Science last Friday. The clarification at the end of our posting is in response to statements in postings of Jennifer Francis and Charles Greene on dot.earth, alleging that we had misrepresented the Francis and Vavrus article in our Science letter.
There’s an article about Jennifer Francis’ work on the NPR blog 2/16. http://www.npr.org/blogs/thetwo-way/2014/02/16/277911739/warming-arctic-may-be-causing-jet-stream-to-lose-its-way
She appeared on CBS yesterday and her work was featured on the BBC News web site http://www.bbc.co.uk/news/science-environment-26023166
In contrast, the press has shown very little interest in our Science letter. In a quick look on Google just now I found only one blog (besides Cliff’s and Judy Curry’s) that refers to it. http://www.breitbart.com/Big-Government/2014/02/16/Record-Cold-February-Sending-Global-Warming-Conspiracists-into-Deep-Freeze
Kevin Trenberth and Jennifer Francis were interviewed yesterday on Chris Mooney’s program, which will be aired this Friday.
The link leads to Wikipedia and other links there; Mike has gotten NUMEROUS awards for his work; none of those are from oil companies, at least that I know of.)
I emphasized “Mike’s” observation (not his real first name, BTW) about one-sided media coverage by using a larger and red font because, you see, Mike came down in yesterday’s rain.
By that I mean, he is an idealist, one that sincerely believes that the Press will cover a story evenly and will give both sides a fair hearing in the debate about global warming/climate change. Mike, BTW, is FULLY on board the global warming band wagon, as are his pals; they just wanted to point out that some claims are not well supported and are going too far; that’s all.
But we streetwise folk remember the words of Seattle’s Queensryche, 1989:
Balanced media coverage on climate? Telling the public in large fonts about the “puzzling hiatus” in global warming over the past 15 years or so, as it was termed in Science recently?
Not gonna happen in these polarized days of the shifting polar vortex, as the latter has always done from time to time.
Let’s look ahead in weather to see if any other extreme weather news sits before us in the models. Then imagine how it might be covered by the media.
Below, from our best model, and from late yesterday’s global data, something awesome has shown up and its been showing up for a few model runs of late, giving it enhanced credibility:
A GIGANTIC and terribly severe mass of cold air is foretold to extrude into most of the US from the Arctic in about 8-10 days. NOAA spaghetti plots VERY supportive of this very bad cold wave). Below, the awesome and annotated in excitment sea level map from NOAA WRF-GFS based on the global data crunch at 5 PM AST yesterday:
Valid at 5 PM AST, February 28th, only nine days away! Arizona still toasty. Word deliberately misspelled here to see if you’re paying attention, one of the many innovations here at cloud-maven.
So, how will another astounding round of cold air be treated by the media, and certain incautious scientists? Let us imagine newspaper headlines on March 1st, 2014:
“Globally-warmed polar vortex squeezed out of Arctic again onto International Falls, MN!
“Numerous low temperature records set yet again against the backdrop of a warming world!”
Later in the stories we might read:
“Demographic experts warn that If the earth warms anymore, and winters continue to be more and more severe in the US, illegal migration will be INTO Mexico, not out of it.”
Or…..
“Citrus growers to move crops to southern Mexico and central America to escape the warmer world of more severe winters.”
———————–End of imagination module—————
What in the cards for Catalina weather in early March?
Still looks pretty good, better than 50-50 IMO, for measurable rain here in Catalina during the first week in March. See below:
Valid at 5 PM AST March 1st. Green areas denote regions where the model thinks it has rained during the prior 12 h. Really bad cold wave in progress in eastern half of US. Will Lake Superior ice over?
The End.
—————
1Shouldn’t be taken as fact, just an assertion at this time, a hypothesis waiting for confirmation.
2From the concept album about drug mind control, “Operation: Mindcrime”, released in 1989 when the writer was quite the lefty. But then I heard that NPR interview with David Horowitz and Peter Collier, former editors of the rad lib Ramparts Mag in the 1960s and 70s and how they had come around over about a ten year period to be able to vote for Ronnie Reagan and I went, “Huh?” “How is that possible?” It would be like Bob Dylan singing songs about being “saved” in the Christian sense. Not even imaginable.
Total precipitation predicted for Catalina (0.01 to 0.10 inches) ending at 5 AM tomorrow morning. Some to the north fell yesterday afternoon, but it wasn’t that much. Sure, its yesterday’s model crunch based on data that’s almost 24 h old, but its got some rain in it, and glimpsing the incoming cloud mass, now located in western AZ and southern Cal, this looks a little reasonable to even a little low now. thinking now that it will be more than 0.10 inches; might get 0.11 inches here in Catalina. Have dip stick (rain gauge one) ready. A new set of computations is not yet ready, but by the time you crawl out of bed and while I’ve been working, the link above will have new information that might be a little different than what I am looking at here at 4:10 AM AST. But I have to move on now!
So, look for lots of middle clouds (Altocumulus/Altostratus) again today, but likely bases lowering during the day and looking pretty threatening by evening. Check this sounding sequence from the BC and how the dewpoint and temperature lines come together at lower heights during the day today. So lots of clouds to write about in your weather diary today, pretty much like yesterday1.
No rain and lots of warming ahead after this.
Yesterday’s clouds
Perhaps first, before moving on to something as ephemeral as clouds, we should start with something contemplative; an aphorism written by a man who compared humans and their lives to the activities of arachnids. Pretty effective I thought.
Chief Seattle, too, by his very namesake, reminds us of the recent big Superbowl victory, after which 700,000 Chief Seattleites gathered in the streets yesterday to see the parade of players and other festivities, weaving their own distinctive strands of life.
Sanctuary Cove Park, Marana, maybe. Then again, it might be in Tucson. Nobody really knows where these towns start and end.
Day started with an overcast of Altostratus with mammatus/testicularis (which I showed yesterday) that devolved into an Altocumulus overcast most of the rest of the day, example below:
12:45 PM. Altocumulus opacus. No virga evident.
2:52 PM. Thin wisp of vIrga and light snow top Mt. Lemmon (center peak). Hope you logged it. I did and I was about 15 friggin’ miles away. But don’t feel bad. I sometimes miss things myself. You just have to bear down, as we say around here, and be fanatical about it. That’s the strand I want you to weave in this life.3:46 PM. Altocumulus lenticulars form under an Altocumulus perlucidus layer. View from Sanctuary Cove Park, very nice little loop walk there.
4:14 PM. More isolated examples of Altocumulus lenticularis near the Tucson Mountains.
Seen in Sanctuary Cover Park, inappropriately blooming wildflowers. This MIGHT be a purple “brown-plumed wire lettuce”, best match I could find in Wildflowers of Arizona by Rick and Nora Bowers. Message sent: global warming hitting hard in AZ this winter so far.
On the other hand, to be fair to the earth, global warming’s on the run in the Great Lakes area. Check this “find” out, courtesy of that big troublemaker and former WA State Climatologist, Mark Albright who enjoys finding discrepancies in fashionable postulations, causing people to think, maybe explain things they weren’t expecting:
The green line is the median ice coverage for the Great Lakes. Good grief, has it been cold around there or what? I guess it all evens out, and for some folks, that’s a problem these days.
The End.
—————————
1I did notice that the big clearing didn’t get here yesterday as early as was thought, that clearing between yesterday’s trough and clouds those in this incoming one today and thought I would hide the discussion of that forecasting error in a footnote. But, maybe the whole point of life is learning from your mistakes, taking them head on. Then at the end, when you’ve finally think you’ve got it all right, you die. Doesn’t seem right.
Above, through the dust, for some perspective of our ghost “bear.” Pretty cool, huh? I hope there are some left by the time I get done with this blog! Maybe I should check….let’s see what the Canadians (well, one Canadian at U of Victoria) has to say about this dire sitiuation, get informed about stuff. Here’s a link provided by the climate provocateur, and former WA State Climatologist, Mark Albright, who forwarded it to me for my own illumination. I found that post interesting, unexpected…maybe you will, too.
