12/20 – Rob’s “Slightly Warmer” Friday Morning Forecast

A surface low-pressure will move into the NW’tern Gulf of Mexico and begin to strengthen tonight and tomorrow. Temperatures should only warm into the 50s today and tomorrow, and overnight lows should cool into the 40s. An extensive area of light to moderate rain will develop across much of the area from tonight through tomorrow. Rain will tend to be heaviest and most widespread across the south and east of the area. The thunderstorm risk looks minimal if any at all.

The surface low will begin to push east and away from the area tomorrow night into Sunday as the parent upper level low begins to move into the Lower Mississippi Valley. Rain chances should begin to gradually diminish from west to east as the low departs and a mid-level dry slot wraps around the upper level low-pressure system. By Sunday afternoon only isolated to scattered showers are expected with the highest rain chances along the Mississippi coast.

From Monday through Thursday, high-pressure will develop across the Gulf South in the wake of the departing upper level low. Temperatures are expected to quickly modify back to more normal readings on Monday and Tuesday with highs in the middle 60s and lows in the 40s. Strong subsidence and dry air advection will keep skies clear both Monday and Christmas-Eve.

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