Storm Prediction Center Severe Thunderstorm Watch 311
4 min read
4 months ago
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 311
NWS Storm Prediction Center Norman OK
1055 AM CDT Thu May 22 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern and East-Central Oklahoma
North Texas
* Effective this Thursday morning and afternoon from 1055 AM
until 400 PM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 2.5 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Clusters of storms will continue to spread generally
east-southeastward across the region, with large hail possible. The
most intense storms are expected across southern Oklahoma into parts
of North Texas, where damaging wind potential may also increase this
afternoon.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 40 miles west northwest
of Muskogee OK to 35 miles south of Sherman 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 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
29020.
...Guyer
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 311
NWS Storm Prediction Center Norman OK
1055 AM CDT Thu May 22 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern and East-Central Oklahoma
North Texas
* Effective this Thursday morning and afternoon from 1055 AM
until 400 PM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 2.5 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Clusters of storms will continue to spread generally
east-southeastward across the region, with large hail possible. The
most intense storms are expected across southern Oklahoma into parts
of North Texas, where damaging wind potential may also increase this
afternoon.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 40 miles west northwest
of Muskogee OK to 35 miles south of Sherman 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 60 knots. A
few cumulonimbi with maximum tops to 500. 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 311 SEVERE TSTM OK TX 221555Z - 222100Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
40WNW MKO/MUSKOGEE OK/ - 35S GYI/SHERMAN TX/
..AVIATION COORDS.. 60NM E/W /22SSW TUL - 28NE TTT/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 29020.
LAT...LON 35889478 33219546 33219788 35889728
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 311 Status Report Message has not been issued yet.
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (10%)
Wind
Probability of 10 or more severe wind events
Mod (40%)
Probability of 1 or more wind events > 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
Mod (60%)
Probability of 1 or more hailstones > 2 inches
Mod (40%)
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
High (80%)
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.
