Arizona: the Emerald State

Now THAT was a monsoon-like day yesterday, one right out of the western state of Kerala, India; the thick rain of mid-morning, seemingly thicker than most here, the clothes-gripping humidity outside, the strip of fog on the side of the western Ghats, oops, Catalina Mountains, the relatively gentle breezes in the rain, the subdued green hues under the overcast of light rain at the end of the unusual morning drencher, aspects that, en toto,  made the morining seem so India-like to me (and I’ve been there in those Kerala rains).  Take a look at our green state and State.

10:37 AM, after 0.76 inches of thick rain with occasional thunder. Nimbostratus up top, Stratus fractus along the Samaniego Ridge.
10:53 AM. Looking toward Charoleau Gap.







In the Ghats, India, 1975,  in case you didn’t believe that I have been in ACTUAL monsoon rains.



And while the rest of the day was sunny, humid and cool for us, the rain wasn’t over with another thunderbludgeoning last night after 9 PM that brought 0.25 inches and the day’s Catalina rain total to 1.02 inches.  Drink up, desert!

Here are the rain reports from around Pima County.  Looks like the “Catalina” foothills has the 24 h total winner at 1.38 inches.  Here are other rain reports from around the State from the USGS.  One of these stations, Chrysotile,  NE of Globe, had 4.21 inches in the 24 h ending yesterday afternoon, also a total that is VERY Indian monsoon-like.

We also had a nice Altocumulus lenticularis at sunset, suggesting some wind aloft.  Seemed almost fall-like seeing this because they are more common with our winter troughs.


6:53 PM.

Another Big Day ahead

3 AM, Arizona obs. Several stations have dewpoints in the low 70s, with TUS reporting, along with light rain, a shockingly high dewpoint of 72 F, really extraordinary.

Get ready! A disturbance over southern California will help organize our storms into ones like those that occur in central Florida today, grouping them into large clusters, with some eye-popping rain amounts likely somewhere in the State (“eye-popping”, 3 plus inches).  Don’t be too surprised if you hear about a “tube” somewhere as well.  Tubes happen in conditions like these.

After today, its “mostly” dry through the end of September, with the best chance of rain on the 27th-28th.

The End.

By Art Rangno

Retiree from a group specializing in airborne measurements of clouds and aerosols at the University of Washington (Cloud and Aerosol Research Group). The projects in which I participated were in many countries; from the Arctic to Brazil, from the Marshall Islands to South Africa.