SPC MD 2139

SPC MD 2139

MD 2139 CONCERNING SEVERE THUNDERSTORM WATCH 683… FOR SOUTHWEST INTO CENTRAL TEXAS

Mesoscale Discussion 2139
NWS Storm Prediction Center Norman OK
1129 PM CDT Mon Sep 11 2023

Areas affected…southwest into central Texas

Concerning…Severe Thunderstorm Watch 683…

Valid 120429Z – 120630Z

The severe weather threat for Severe Thunderstorm Watch 683
continues.

SUMMARY…Strong to severe wind gusts remain possible with outflow
moving out of the Permian Basin toward parts of central Texas.

DISCUSSION…Multiple severe wind gusts have been measured over the
past two hours as storms developed southeastward out of NM. The
primary outflow surge remains intact and has moved through the MAF
area, and currently extends southwestward toward FST. A separate,
southward-moving outflow regime exists ahead of the western surge,
with robust storms from SJT eastward toward BWD. In between the two
outflows, around 1000 J/kg MLCAPE exists per objective analysis,
with minimal CIN. Given the strong lift with the surging and
possibly intersecting outflow later tonight, much of the area within
WW 683 will experience wind gusts over 40 kt, with a few severe
gusts expected.

..Jewell.. 09/12/2023

…Please see www.spc.noaa.gov for graphic product…

ATTN…WFO…FWD…EWX…SJT…MAF…

LAT…LON 30570326 31050239 31610189 32050146 32160111 31810067
31649984 31659906 31729871 31409844 30979843 30649855
30129871 29879910 30250116 30570326

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