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| Mesoscale Discussion 968 | |
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Mesoscale Discussion 0968
NWS Storm Prediction Center Norman OK
0138 PM CDT Sun May 25 2025
Areas affected...west-central into south-central Oklahoma
Concerning...Severe potential...Watch possible
Valid 251838Z - 252015Z
Probability of Watch Issuance...60 percent
SUMMARY...Isolated to scattered storm development is possible this
afternoon with an attendant severe risk. Convective trends will be
monitored for a possible Watch.
DISCUSSION...Visible-satellite imagery trends during the past hour
have shown a swelling cumulus field in the vicinity of a wind shift
and frontal zone draped generally west to east across south-central
and central OK. A very moist and destabilizing airmass is over
south-central OK where surface dewpoints are in the 74-76 deg F
range. Heating of this moist/unstable airmass is resulting in
3000-4000 J/kg MLCAPE with eroding convective inhibition. Although
a flattened mid-level ridge is located over OK, 30-35 kt
west-southwesterly flow in the 4-6 km layer, per KTLX VAD data,
coupled with weak east-southeast flow at the surface, is
contributing to sufficient deep-layer shear for supercells.
Although this convective scenario/setup is largely mesoscale
dependent and void of stronger large-scale ascent, isolated severe
storms are possible this afternoon. Large to very large hail could
accompany the stronger updrafts. A tornado cannot be ruled out
before clustering of storms eventually occurs towards evening.
Severe gusts will become the primary hazard later this evening, in
addition to some lingering hail/low tornado risk.
..Smith/Guyer.. 05/25/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...TSA...OUN...
LAT...LON 35959747 35579678 35169585 34659568 34309578 34229636
34329732 34299796 34159866 34529927 35149931 35719900
36059788 35959747
MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
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