Wednesday, March 26, 2014

Thunder Yesterday; Wind Today


There were quite a few thunderstorms around yesterday but rain at the ground was mostly just spits and sprinkles. No site across the ALERT network reported 0.04" or more yesterday. Tried to grab some CG plots from Atmo page but none of the products this morning reached back to yesterday afternoon - the number of CGs in eastern Pima County was impressive though.

The attempt at a 00 UTC sounding from the NWS Office on campus is shown above. Even the new Vaisala sonde failed, apparently after it spent a bit of time in a thunderstorm updraft, exhibiting severe wet-bulbing when it exited into dry near-environment air.

The WRF-NAM early forecast from Atmo today forecasts little in the way of radar echoe, but continues to forecast widespread, strong winds across much of the Southwest. The forecasts valid at 2 pm MST this afternoon are shown below - the 1.8 km grid forecast is top and 5.4 km grid forecast is at bottom.



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