SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1052 AM CST Sun Jan 31 2021 Valid 011200Z - 021200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across southern Florida on Monday morning. Severe thunderstorms are not expected. ...Synopsis... An upper low over the central Appalachians and attendant trough extending southward into the eastern Gulf of Mexico Monday morning will pivot eastward through the period. By Tuesday morning, the upper low will be strengthening over the Mid-Atlantic, with the southern extent of the trough moving offshore the southeast U.S. coast over the Gulf Stream. A surface low near the Mid-Atlantic coast will lift north/northeast through the period. The attendant cold front will arc southwest, just offshore the southeast U.S. coast, and across southern FL Monday morning. The front will track southeast, moving offshore southern FL and the Keys by midday. Modest instability and boundary-parallel flow will limit vigorous thunderstorm activity. However, cooling aloft and steepening lapse rates could result in a few lightning flashes near the front across south FL through around 16-17z. ..Leitman.. 01/31/2021
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