Yesterday’s clouds; and an April Fool’s Day storm to think about

Kind of a dull day yesterday.  Not much to look at.  Some Altocumulus with an interesting, slotted wave pattern to start was about the only interesting thing in the morning.

Then some small Cumulus that continued to agglomerate into masses of dark Stratocumulus, with a little rain to the north of us.  You probably didn’t see it.   The darkness of the clouds was likely due to higher than normal droplet concentrations, which in clouds, causes the bottoms to be darker because the smaller droplets associated with high droplet concentrations causes more sunlight to be reflected off the top of clouds.  But you knew that.

You probably also know that the brief, and weak shafts of rain to the north of us in the afternoon meant that cloud tops were barely reaching the ice-forming level, certainly were mounding ones, analogous to the rolling hills of Ireland rather than ones protruding upward very much like Kilimanjaro or something like that.

Sunset was OK, not great.

A stupendous storm showed up in the fantasy part of the model run, out two weeks, or on April 1st.  That’s a little late for a stupendous storm, but it was fun seeing the computer maps of one.

Today, and not just because I am lazy and have to go right now to feed some horses, I thought I would just insert all these images in whatever way WordPress decided they should go and let you puzzle them out, e.g., name clouds, figure out what time was the photo taken, or, just look at them as a review of your cloud day.

Btw, whilst out on dog walk yesterday, saw that in the Cottonwoods area by the Baby Jesus Trailhead, several 6-9 inch diameter cottonwood tree branches were blown down during Sunday’s windstorm, one younger tree had been topped.  Looked like a very small, supergust burst had done it, maybe less than 50 yards in diameter.

I figure today’s weather is pretty well presented by the NWS, and your favorite weathercaster, so why duplicate good efforts?

10:47 AM.  Altocumulus perlucidus undulatus (has waves in it).
10:47 AM. Altocumulus perlucidus undulatus translucidus  (has waves in it;  is thin).

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The End, of one of the easiest blogs yet!  Maybe will practice more WordPress chaos in the future!

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.