Storm Prediction Center Severe Thunderstorm Watch 237

Note: 
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.

   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 237
   NWS Storm Prediction Center Norman OK
   315 PM CDT Wed May 20 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southwest Texas

   * Effective this Wednesday afternoon and evening from 315 PM
     until 1000 PM CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2
       inches in diameter likely
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Intense thunderstorms will develop off the Davis Mountains
   and spread eastward this afternoon and evening, posing a risk of
   large hail and damaging wind gusts.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 15 miles south
   southwest of Marfa TX to 35 miles east northeast of Dryden 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 234...WW 235...WW 236...

   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
   25025.

   ...Hart

   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 237
   NWS Storm Prediction Center Norman OK
   315 PM CDT Wed May 20 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southwest Texas

   * Effective this Wednesday afternoon and evening from 315 PM
     until 1000 PM CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2
       inches in diameter likely
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Intense thunderstorms will develop off the Davis Mountains
   and spread eastward this afternoon and evening, posing a risk of
   large hail and damaging wind gusts.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 15 miles south
   southwest of Marfa TX to 35 miles east northeast of Dryden 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 234...WW 235...WW 236...

   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
   25025.

   ...Hart

Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.

   SAW7 
   WW 237 SEVERE TSTM TX 202015Z - 210300Z
   AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
   15SSW MRF/MARFA TX/ - 35ENE 6R6/DRYDEN TX/
   ..AVIATION COORDS.. 50NM N/S /12SW MRF - 70NW DLF/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25025.

   LAT...LON 31040412 31100167 29360167 29300412

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU7.

Watch 237 Status Report Messages:

STATUS REPORT #2 ON WW 237

VALID 202135Z - 202240Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..KERR..05/20/26

ATTN...WFO...MAF...

&&

STATUS REPORT FOR WS 237 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

TXC043-243-371-377-443-202240-

TX 
.    TEXAS COUNTIES INCLUDED ARE

BREWSTER     JEFF DAVIS  PECOS     
PRESIDIO     TERRELL 
$$


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.
$$

STATUS REPORT #1 ON WW 237

VALID 202040Z - 202140Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..DEAN..05/20/26

ATTN...WFO...MAF...

&&

STATUS REPORT FOR WS 237 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

TXC043-243-371-377-443-202140-

TX 
.    TEXAS COUNTIES INCLUDED ARE

BREWSTER     JEFF DAVIS  PECOS     
PRESIDIO     TERRELL 
$$


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.
$$

Note:
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Tornadoes

Wind

Hail

Combined Severe Hail/Wind

For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The “Low” category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
“Moderate” from 30% to 60%, and “High” from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.