Our desert greening seems to be reaching its peak now, and so it would be nice for you to get out and see it before football day on Saturday and it could start to wilt that bit under our drier conditions. Just after sunrise, and just before sunset, there is some great lighting on our weedy summer desert vegetation.
Canadians1 think the tropical air will hang around SE Arizona for a few more days, with the chances of rain actually increasing that bit on Saturday. The US WRF-GFS model is not quite so generous with precip here, so we will ignore that one. But, in any event, we should have pretty Cumulus, and distant Cumulonimbus clouds for a few more days before The End, after which we have to wait for a hurricane/tropical storm to roar up the coast of Baja and across Yuma to get any real rain.
In the meantime, I am wondering whether you have taken that trip I suggested to SE Arizona to see the vegetation explosion resulting from this summer’s extraordinary rains they’ve gotten down there? Douglas, for example, has just crossed over the 16 inches mark for this summer a couple of days ago, the wettest summer of the past 100 years down that way. The summer desert vegetation down there must be extraordinary, too, and it would really be worth seeing. I will get down there for sure!
It has continued to rain extraordinary amounts of rain in western Arizona. Here is a depiction of just the past seven days ending yesterday morning (today’s image is not out yet). Its a great sight, considering our “extreme” and “exceptional” drought designations over that way.
1The writer exhibits bias here due to his precipophilic personality combined with having most of his relatives living in Canada. Also, the cruder Canadian model with its larger grid sizes tends to smooth out precip over larger areas than the US WRF-GFS model shown here.
Though the the castellanus twins dropped by yesterday:
Altocumulus castellanus, that is. Suggests atmo in this layer ripe for convection, but unless there’s some humidity below these clouds, it can be kind of an old saw that doesn’t work out a lot of times, unless they themselves get overly enthusiastic and begin to shower and thunder. It happens.
While yesterday had these interesting clouds, and a couple of distant Cumulonimbus tops, the only real excitement was this dumpster NW of us shown below. Did any one drive over there to get under it and measure the rain it put out? I would dole out some extra credit if you did. Otherwise, we’re going to have to rely on radar to estimate how much came down over there.
The week in rain
Since most of Arizona is unpopulated, and even when there are people, not everyone reports rain, so we have to rely on radar-derived rainfall amounts to “fill in the blanks” Are you a “blank”? Think about it. Now looking back at this past 7-days, ending yesterday, and using radar for any sense of what happened all over the State here’s what we get, from WSI Intellicast. We had an amazing 7 days of rainfall, rains that did so much to dent the NW AZ drought with many inches of rain. Need more, of course, but here it is:
The weather ahead
U of WA mod, and his one, crunching last afternoon’s global data, have the size of clouds picking up today and over the next couple of days. Yay. Need more rain.
————– 1Furthermore, it was supposed to be a horror movie, and instead it had SINGING! Unbelievable. No wonder people were upset when they saw it!
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