Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 149
NWS Storm Prediction Center Norman OK
310 PM CDT Mon Apr 27 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Texas
* Effective this Monday afternoon and evening from 310 PM until
900 PM CDT.
* 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
SUMMARY...Isolated thunderstorms are developing east of the Davis
Mountains this afternoon, and a couple of these storms are expected
to evolve into splitting supercells with an attendant threat for
large hail and isolated severe outflow winds through this evening.
The severe thunderstorm watch area is approximately along and 35
statute miles east and west of a line from 115 miles north northeast
of Dryden TX to 20 miles west southwest of Dryden TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 550. Mean storm motion vector
32015.
...Thompson
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 149
NWS Storm Prediction Center Norman OK
310 PM CDT Mon Apr 27 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Texas
* Effective this Monday afternoon and evening from 310 PM until
900 PM CDT.
* 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
SUMMARY...Isolated thunderstorms are developing east of the Davis
Mountains this afternoon, and a couple of these storms are expected
to evolve into splitting supercells with an attendant threat for
large hail and isolated severe outflow winds through this evening.
The severe thunderstorm watch area is approximately along and 35
statute miles east and west of a line from 115 miles north northeast
of Dryden TX to 20 miles west southwest of Dryden TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 550. Mean storm motion vector
32015.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 149 SEVERE TSTM TX 272010Z - 280200Z
AXIS..35 STATUTE MILES EAST AND WEST OF LINE..
115NNE 6R6/DRYDEN TX/ - 20WSW 6R6/DRYDEN TX/
..AVIATION COORDS.. 30NM E/W /45SE MAF - 66SSE FST/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 32015.
LAT...LON 31570087 29930193 29930310 31570206
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 149 Status Report Messages:
STATUS REPORT #3 ON WW 149
VALID 280030Z - 280140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WSW 6R6
TO 60 NNE 6R6 TO 20 NNE MAF AND 30 SW SJT TO 70 WSW SJT TO 20 W
BGS.
..WENDT..04/28/20
ATTN...WFO...SJT...MAF...
&&
STATUS REPORT FOR WS 149
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC173-235-383-431-280140-
TX
. TEXAS COUNTIES INCLUDED ARE
GLASSCOCK IRION REAGAN
STERLING
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 149
VALID 272340Z - 280040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WSW 6R6
TO 60 NNE 6R6 TO 20 NNE MAF.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 481
..WENDT..04/27/20
ATTN...WFO...SJT...MAF...
&&
STATUS REPORT FOR WS 149
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC105-173-235-329-383-443-280040-
TX
. TEXAS COUNTIES INCLUDED ARE
CROCKETT GLASSCOCK IRION
MIDLAND REAGAN 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 149
VALID 272225Z - 272340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..WENDT..04/27/20
ATTN...WFO...SJT...MAF...
&&
STATUS REPORT FOR WS 149
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC105-235-371-383-443-461-272340-
TX
. TEXAS COUNTIES INCLUDED ARE
CROCKETT IRION PECOS
REAGAN TERRELL UPTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
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 
@NWSSPC
