SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1029 AM CST Thu Jan 21 2021 Valid 211630Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Although severe thunderstorms are not expected, thunderstorms will be possible today across parts of southern Arizona, and from eastern Texas into the lower Mississippi Valley tonight. ...Southern Arizona... In relation to the eastward-ejecting/de-amplifying shortwave trough over northwest Mexico, a few thunderstorms will remain a possibility mainly across far southern portions of Arizona through the afternoon. ...East Texas into lower Mississippi Valley... Additional moistening/lift in vicinity of a west/east-oriented low-level baroclinic zone may become conducive for some thunderstorms this evening into the overnight. ...Coastal areas of southern Oregon/northern California... In association with a southward-digging shortwave trough, convection should increase late tonight beneath the mid-level cold core. A few lightning flashes could occur offshore, but the near-shore/coastal thunderstorm potential should remain very low (less than 10 percent). ..Guyer.. 01/21/2021
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