Friday, March 19, 2010

A Windy Week



It has been a windy week here in Tucson; dry and sunny and temps that got into the low 80s on Wednesday but lots of wind. Backdoor front from the southern Plains brought 30 to 40 mph easterly winds all day on Tuesday and then again Wednesday morning to most of southeast Arizona. Notable was a gust to 76 mph at the Mt. Hopkins RAWS - perhaps an eddy effect from Mt. Wrightson? - and 58 mph at the Atmo rooftop anemometer. A S/W at 500 mb is digging south across the central Rockies this morning and a strong, separate vorticity max is over southwest Arizona this morning. It's positively tilted and forecast to move quickly past, but has brought high-based cumulus and some ACC this morning - see view of Catalinas above. Perhaps some sprinkles and winds from the west by afternoon. Main part of the S/W is bringing a spring snow storm to Denver and the Front Range today - see top image. NAM progs the 500 mb wave to sharpen and cutoff, bringing a March snow to the southern Plains - indeed this morning's forecast run - if accurate - indicates blizzard-like conditions and heavy snow for central Oklahoma Saturday night and Sunday!

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