Thursday, November 21, 2019

Love A Rainy (And Snowy) Night


Several inches of snow this morning at the Mt. Lemmon General Store. But, right now there are a few patches of blue sky around after a very rainy night.


Radar above, for 6:35 am MST, shows moderate to heavy showers over and east of metro area. Plot of CG flashes for 24-hours ending at 7:00 am (below from Atmo and Vaisala) shows that the most recent thunderstorm activity was over our part of state.



Precipitation amounts have been very impressive over night - ALERT amounts for past 24-hours ending at 7:30 am above and below. Numerous sites with over an inch of rain (numbers hard to read but red numbers are over an inch), while mountains had amounts up to right at 3.00 inches, and then there was snow before dawn which didn't get into the measurements. Here at house there was 1.29" in gauge this morning - added to yesterday's 0.30" makes this a 1.59" storm. This is largest two day total here since early August. Airport reported total of 1.32"; DM AFB had 1.09"; and Atmo 1.02". All-in-all, quite some event.



This morning's 500 mb analysis (above, from SPC) shows the cyclone between Las Vegas and Reno - low is expected to move slowly east-northeastward today. The morning TWC sounding (below, also from SPC) is very moist up to 400 mb; has small CAPE; and southwest winds over a 100 mph around 300 mb.


Still some chance for a bit more rain later today. Forecast below is of snow accumulation from the 06 UTC run of the WRF-GFS - and we know that that has already verified.

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