Wednesday, November 24, 2021

Bit Of Rain - Finally

Some sunshine peeking through a bit before 8:00 am MST this morning - from campus above and down in Bisbee at bottom.

Light showers moved across parts of the metro area after midnight last night: 24-hour amounts from the ALERT network (above) and from Univ. of Utah's MesoWest (below). Remember that Alert only records amounts of 0.4" and greater (which occurred only over the mountains). MesoWest indicates lighter amounts scattered across the metro area. Here at house we finally had measurable rain (first since September 30th), but amount was just 0.02", which was enough to dampen the patio and open ground. But, a very nice smell of moisture in the air early this morning.

Morning sounding at TWC/TUS (above from NCAR RAP) indicates low-level moisture up to just above 600 mb, and there appears to be a slight amount of CAPE present. The 500 mb analysis (below, also from RAP) shows two weak, short-wave troughs. One is over eastern Arizona, with a trailing trough across Nevada and central Californina. 

The trailing feature may bring another chance for light showers late today and tonight. The 12 UTC forecast from the WRF-RR (second below) forecasts only some widely scattered, very light showers over eastern Pima County through 5:00 am on Friday the 26th. Pleasant temperatures for Thanksgiving, but WRF forecasts also indicate some gusty east winds during the day.

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