SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0211 AM CDT Sun Oct 25 2020 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not currently forecast across the contiguous United States on Tuesday. ...Synopsis... A closed mid-level low will migrate slowly eastward from southern AZ to far west TX during the day 3 period. In the low levels, a cold front draped from deep south TX northeast along the TX coast and into the LA, will feature an unseasonably cool airmass to its northwest over the central and southern Great Plains. A developing tropical cyclone is forecast to move into the central Gulf of Mexico during the day. As the tropical cyclone gradually approaches the mouth of the MS River (see the latest National Hurricane Center forecasts for the expected track and timing information), a maritime tropical airmass will slowly advance northward in the lower MS Valley. The gradually destabilizing airmass over the Gulf coastal plain will become more favorable for isolated thunderstorms to develop on the outer periphery of the tropical cyclone. The expected strengthening of the wind field that would support a conditional risk for rotating storms near the mouth of the MS River, will probably not occur until after dawn Wednesday. ..Smith.. 10/25/2020
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