12/18 – Rob Knight’s “VERY COLD” Wednesday Morning Forecast

Not much to discuss in the short-term this go around, as most of the northern Gulf coast transitions to a calm, clear and benign pattern for the next few days. Main story has been the cold and the wind, which guidance suggests winds will back off just slightly today. However it will still remain gusty at times, especially along the MS coast today. By tonight, the dominating area of high pressure to our west will finally drift closer across the southern MS valley region, allowing for the surface winds to relax quite a bit.

Strong radiational cooling processes in place due to clear skies and calm winds will lead to some of the coldest temperatures in the forecast period. Expect a few locations along/north of I-10 to drop below freezing for a few hours (between 4 to 7 hours for the aforementioned areas). Areas of frost (and likely heavy frost) may damage sensitive plants in these locations before we warm up above freezing around 6:00 to 8:00 AM Thursday morning.

We are anticipating a strong disturbance to cross the California Pacific coast later today, which will continue to drift east across the Rockies. This will bring slight warmer temperatures to the area by Friday with areas of rainfall this weekend.

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