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WW 637 SEVERE TSTM TX 232015Z - 240400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 637
NWS Storm Prediction Center Norman OK
215 PM CST Sun Nov 23 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
West Texas
* Effective this Sunday afternoon and evening from 215 PM until
1000 PM CST.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Thunderstorms are expected to develop over the next few
hours from the Permian Basin into the Pecos Valley. Strong vertical
shear overlapping modest buoyancy is expected to support initial
supercells, with large hail as the primary risk. A few strong gusts
and a brief tornado are possible as well. A trend towards a more
linear mode is anticipated with time, but the threat for isolated
hail and damaging gusts will likely persist through the evening.
The severe thunderstorm watch area is approximately along and 85
statute miles east and west of a line from 70 miles north northeast
of Big Spring TX to 75 miles east southeast of Fort Stockton TX. For
a complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24035.
...Mosier
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WW 0637 Status Updates
STATUS REPORT ON WW 637
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NW FST TO
15 WSW BGS TO 25 SSE LBB.
..MOORE..11/24/25
ATTN...WFO...MAF...SJT...LUB...
STATUS REPORT FOR WS 637
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC033-081-095-103-105-151-173-207-227-235-253-329-335-353-371-
383-399-413-415-431-435-441-443-451-461-240340-
TX
. TEXAS COUNTIES INCLUDED ARE
BORDEN COKE CONCHO
CRANE CROCKETT FISHER
GLASSCOCK HASKELL HOWARD
IRION JONES MIDLAND
MITCHELL NOLAN PECOS
REAGAN RUNNELS SCHLEICHER
SCURRY STERLING SUTTON
TAYLOR TERRELL TOM GREEN
UPTON
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
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No Mesoscale Discussions are in effect as of Mon Nov 24 02:20:28 UTC 2025.
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0657 PM CST Sun Nov 23 2025
Valid 240100Z - 241200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
SOUTHWEST/WEST-CENTRAL TEXAS...
...SUMMARY...
A few severe storms capable of producing hail and locally strong
gusts remains possible tonight over parts of west to west-central
Texas.
...Discussion...
Gradual cooling aloft will occur tonight as the upper trough moves
into the central and southern Plains, with 50-60 kt midlevel
southwesterlies maintaining deep-layer shear. At the surface, an
instability axis currently exists over southwest TX, where
temperatures are in the 60s with low 60s F dewpoints. While the 00Z
DRT sounding was capped, the MAF soundings shows significantly
cooler 700 mb temperatures. A few storms are ongoing over the South
Plains and into the Pecos Valley, with new echoes developing south
of FST. Given southeasterly 925 mb winds and continued cooling
aloft, additional development and possibly strengthening is expected
overnight.
Long hodographs will favor cells producing hail, and a few strong
wind gusts may also occur if bowing structures can develop. Overall,
instability will be mainly elevated, except over far southern areas.
..Jewell.. 11/24/2025
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