Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 231
NWS Storm Prediction Center Norman OK
715 PM CDT Mon May 31 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South-Central Texas
* Effective this Monday night and Tuesday morning from 715 PM
until 100 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Isolated damaging wind gusts to 65 mph possible
A tornado or two possible
SUMMARY...An intense supercell ongoing near the Rio Grande River is
likely to continue southeastward potentially for a couple more hours
this evening, with additional storm development possible across/into
the southern Edwards Plateau/Rio Grande River vicinity in areas
along/south of a boundary.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 55 miles northwest of
Del Rio TX to 95 miles east southeast of Del Rio TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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
2.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
29020.
...Guyer
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 231
NWS Storm Prediction Center Norman OK
715 PM CDT Mon May 31 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South-Central Texas
* Effective this Monday night and Tuesday morning from 715 PM
until 100 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Isolated damaging wind gusts to 65 mph possible
A tornado or two possible
SUMMARY...An intense supercell ongoing near the Rio Grande River is
likely to continue southeastward potentially for a couple more hours
this evening, with additional storm development possible across/into
the southern Edwards Plateau/Rio Grande River vicinity in areas
along/south of a boundary.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 55 miles northwest of
Del Rio TX to 95 miles east southeast of Del Rio TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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
2.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
29020.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 231 SEVERE TSTM TX 010015Z - 010600Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
55NW DRT/DEL RIO TX/ - 95ESE DRT/DEL RIO TX/
..AVIATION COORDS.. 45NM N/S /54NW DLF - 72SW SAT/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..55 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 29020.
LAT...LON 30650157 29569947 28119947 29210157
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 231 Status Report Messages:
STATUS REPORT #4 ON WW 231
VALID 010530Z - 010640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SW DRT TO
20 SSW HDO.
..GLEASON..06/01/21
ATTN...WFO...EWX...
&&
STATUS REPORT FOR WS 231
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC127-323-507-010640-
TX
. TEXAS COUNTIES INCLUDED ARE
DIMMIT MAVERICK ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 231
VALID 010425Z - 010540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 WNW DRT
TO 20 NW HDO.
..KERR..06/01/21
ATTN...WFO...EWX...
&&
STATUS REPORT FOR WS 231
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC127-271-323-463-507-010540-
TX
. TEXAS COUNTIES INCLUDED ARE
DIMMIT KINNEY MAVERICK
UVALDE ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 231
VALID 010400Z - 010540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SE 6R6 TO
35 NNE DRT TO 45 S JCT.
..KERR..06/01/21
ATTN...WFO...EWX...
&&
STATUS REPORT FOR WS 231
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC127-271-323-463-507-010540-
TX
. TEXAS COUNTIES INCLUDED ARE
DIMMIT KINNEY MAVERICK
UVALDE ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 231
VALID 010225Z - 010340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/01/21
ATTN...WFO...EWX...
&&
STATUS REPORT FOR WS 231
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC127-137-271-323-385-463-465-507-010340-
TX
. TEXAS COUNTIES INCLUDED ARE
DIMMIT EDWARDS KINNEY
MAVERICK REAL UVALDE
VAL VERDE ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (10%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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.
weather.gov 
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