SPC Oct 23, 2020 0730 UTC Day 3 Severe Thunderstorm Outlook
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0145 AM CDT Fri Oct 23 2020 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not currently forecast across the contiguous U.S. on Sunday. ...Synopsis... A positive-tilt, mid-level trough will amplify over the western states as a potent disturbance moves equatorward along the West Coast on Sunday through Sunday night. A belt of strong southwesterly mid-level flow will extend from the Four Corners northeastward across the central Great Plains and into the Great Lakes. In the low levels, a cold front initially over the northern TX Panhandle will surge southward through central TX and near the OK-TX-AR border by daybreak Monday. Showers and isolated to widely scattered thunderstorms are forecast from TX northeastward into the southern Great Lakes during the Day-3 period. However, it appears the onset of weak instability translating to shower/thunderstorm potential will primarily occur late Sunday into Sunday night immediately on or behind the surface front. Although a few brief stronger storms cannot be ruled out (western Ozark Plateau), it appears the risk for organized severe storms will be limited. Elsewhere, a few weak thunderstorms are possible during the afternoon in the vicinity of the southern Appalachians in the central and southern FL Peninsula. ..Smith.. 10/23/2020
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