Saturday, December 15, 2018

Miscellany At Mid-Month


Another day begins with widespread cloudiness - as per Kitt Peak view to north at 6:51 am MST this morning. The IR satellite image below is from 13 UTC (6:00 am local) - note the wide plume of clouds from subtropics that covers most of Arizona.



We reached mid-month with only one precipitation event, and there's little on the horizon for the Southwest. Graphic above shows total precipitation forecast from the 00 UTC WRF-GFS on 5.4 km grid for period ending at 5:00 pm on December 22nd.

The East continues to have the corner on the big storm market, as an unusually warm system moves northeastward from Tennessee - surface plot below (from NCAR) shows rain from Florida northward past D.C.. Temperatures are above freezing from Florida to New York, which I think is fairly rare for this time of year.


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