SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CST Mon Jan 25 2021 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... No severe weather is expected across the U.S. on Wednesday. ...Discussion... A fast-moving short-wave trough -- progged to be exiting the central and southern Plains region early in the period, will continue tracking eastward, clearing the East Coast overnight. Meanwhile, sharp upper troughing will remain aligned roughly along the West Coast through the period. In between, ridging aloft will exist, with anticyclonic flow expanding to include most of the U.S. by the end of the period, in the wake of the departing eastern system. At the surface, high pressure will largely prevail over most of the country. A surface front lying across the Southeast and into the Gulf will sag southward with time, as a weak frontal wave moves off the southeastern U.S. coast. Overnight, this front should cross the Florida Peninsula, reaching far south Florida and the Keys by 28/12Z. Showers and occasional thunderstorms are expected over portions of the Southeast, in the vicinity of the aforementioned surface boundary. Weak instability suggests disorganized -- and for the most part elevated -- convection. Elsewhere, showers will affect portions of the West Coast in the vicinity of the nearly stationary upper trough, but any sporadic lightning flashes inland should remain few and far between, insufficient for inclusion of a 10% thunder area. ..Goss.. 01/25/2021
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