Alabama 811 | Know What's Below.

SPC Mesoscale Discussion: Severe Thunderstorm Watch 303…

| July 22, 2018 @ 11:27 am

SUMMARY…Thunderstorms developing over southern Alabama will likely intensify and become a severe threat in the next 1-2 hours. A new watch or areal extension of WW 303 will be likely.

DISCUSSION…Thunderstorms are intensifying over southwest AL, between Meridian MS and Selma AL. These storms are ahead of a mid level speed maxima rotating southward across northwest MS. Storms are expected to increase in coverage through the early afternoon and spread across southern AL and into the FL Panhandle. Forecast soundings show steep low-level lapse rates and rather strong flow just above the boundary-layer. This should be supportive of locally damaging wind gusts. Also, favorable cape and effective shear values suggest some risk of hail in the strongest cores. A new severe thunderstorm watch or an areal extension of WW303 will likely be required soon into southern AL and the western FL Peninsula.

Tags:

Category: ALL POSTS, MescoScale Discussions

About the Author ()

Comments are closed.