Monday, December 12, 2011

Quick Look At The Early WRF-GFS

No rain into the area as of 6 am MST this Monday morning, except perhaps some sprinkles from the high, thick overcast. After 8 days of morning lows in the 20s, temps early this morning at house are in the low 40s. Models continue to forecast a significant precipitation event for Arizona from this afternoon into early Wednesday. The early run of the Atmo version of the WRF-GFS forecasts a very significant event, especially for the mountains. At top is the WRF-GFS forecast through noon Tuesday of total precipitation. Middle is the amount color bar. Bottom is total precipitation forecast though 6 am Wednesday morning. Amounts in Tucson metro area range up to around an inch and a half. Highest elevations are forecast to receive 2 to 3 inches of water equivalent precipitation. Model forecasted snowfall through noon Wednesday is shown below - yellow indicates forecast amounts of 20" inches and darkest red tones indicate more than 3 feet.

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