ACUS11 KWNS 261747
SWOMCD
SPC MCD 261747=20
MSZ000-LAZ000-261945-

Mesoscale Discussion 0989
NWS Storm Prediction Center Norman OK
1247 PM CDT Mon May 26 2025

Areas affected...west-central and south-central MS

Concerning...Severe Thunderstorm Watch 330...

Valid 261747Z - 261945Z

The severe weather threat for Severe Thunderstorm Watch 330
continues.

SUMMARY...The greatest risk for strong/locally severe damaging gusts
(50-65 mph) appears focused from near I-20 southward into southern
MS through 3pm CDT (20 UTC).

DISCUSSION...Surface observations during the 15-17 UTC timeframe
have shown temperatures warming from the the lower-mid 70s deg F to
the mid 70s to lower 80s from south to north. Coincidentally, the
cumulus field is slowly moving northward over southern MS and
generally corresponds to the delineation of moderate instability
south of the cumulus fine-line. Continued warming due in part to
scattered to broken cloud cover will further steepen 0-2 km lapse
rates. Despite modest to moderate 850-300 mb mean flow, an
attendant MCV located near the ArkLaMiss will aid in squall line
maintenance through the afternoon. The 18 UTC Slidell, Louisiana
raob showed a lowest 100-mb mean mixing ratio of 16.6 g/kg.=20
Water-loaded downdrafts and surges in the squall line will act to
facilitate stronger gusts to the surface as the squall line moves
east this afternoon across Severe Thunderstorm Watch #330.

..Smith.. 05/26/2025

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8LybxE6X5LV-co8MQCom6DvzZkZZwGB4YAk9IWhXGIBvMvzbqmGz_66Ek9JPYqK9SN9t0CeTp= C2BHPtUZNFhDZh8RGA$ for graphic product...

ATTN...WFO...JAN...LIX...

LAT...LON 32339111 32539090 32548952 32418943 31428956 31168983
31159129 31309141 32339111=20

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH


=3D =3D =3D
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