Daweathablog

Charles E. Roop giving his own forecasts, weather discussions, photos and adventures for the Starkville, MS area, Florida, and beyond.

Tuesday, September 21, 2010

Forecasting Contest - Atlanta Forecast for Wednesday 09/22

Current surface analysis shows high pressure centered over eastern Pennsylvania. At the upper levels, 12Z analysis shows a high between 850 and 400 mb. This subsistence aloft will help keep rain chances near nil for the today.

Guidance models are forecasting the high over New England to keep sliding east into the Atlantic. This will bring more of a southerly flow tomorrow and pull in more moisture at the surface. High pressure aloft is expected to remain tomorrow and help keep things capped. However, NWS-FFC is keeping a very slim chance of rain for the Atlanta area. I am not very confident of adding a chance of precip to the forecast based on the mid-level high that's expected to remain.

I've been forecasting a little cooler than actual lows; therefore, I might raise the low temp Wednesday morning slightly above MOS guidance. Expect fair conditions tonight with a low near 72. For Wednesday, expect partly cloudy skies, a little muggy with a high near 90.

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