ACUS11 KWNS 310421
SWOMCD
SPC MCD 310421=20
NEZ000-SDZ000-310615-

Mesoscale Discussion 0906
NWS Storm Prediction Center Norman OK
1121 PM CDT Tue May 30 2023

Areas affected...Central NE

Concerning...Severe Thunderstorm Watch 249...

Valid 310421Z - 310615Z

The severe weather threat for Severe Thunderstorm Watch 249
continues.

SUMMARY...Isolated severe wind gusts remain possible with squall
line as it advances east late this evening.

DISCUSSION...Convection that developed over southeast WY has
progressed downstream and matured into an MCS roughly 300mi long
from southwest NE into central SD. Leading edge of this complex is characterized by a robust squall line that is producing gusty winds, occasionally approaching/exceeding severe criteria, especially
northwest of LBF. LLJ has strengthened to near 25kt ahead of this
activity which appears to be partly responsible for the
organizational structure of this activity. Squall line should
advance through the remainder of ww249 in the next 1-2 hr but
overall convective trends do not favor an appreciable severe threat
downstream. At this time a new ww is not anticipated.

..Darrow.. 05/31/2023

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9pP2XKANhbSDtvTp7JEbToaPdoEJjoKczcDB4bwFq7PA0rGbqnIvecRMzcINr3_ByGl7_hcSx= z_NAy1BMnMWycNX6BU$ for graphic product...

ATTN...WFO...LBF...UNR...

LAT...LON 41030075 43040020 42869957 41140005 41030075=20


=3D =3D =3D
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