Wednesday, December 26, 2018

Brief Summary Of 25/26 December Precipitation


Peaceful snow scene before sunrise at the Summerhaven General Store - looks like several inches up there.


Another widespread event, but with light precipitation amounts - generally around 0.20" to 0.30". ALERT observations (above and below) are for 24-hours ending at 6:30 am MST this morning. The airport had 0.26"; Atmo had 0.23"; here at house we got 0.21"; and DM measured 0.20". The airport had gusty winds to around 40 mph ahead of front and then reported thunder in one observation. Precipitation occurred before and after midnight, spanning both the 25th and 26th. Timing and amounts for GEFS average (post yesterday) were quite good for our area. 

The plot of detected CG flashes (at bottom) shows thunderstorms occurred over much of Pima County - there was a small cluster of flashes south of airport that is hard to see on the plots. No thunder here.

A trailing system from the north will come through during early hours of 28 December (Friday). While there will be precipitation again, it appears that this second system may be even more moisture-starved than the one that has just passed.



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