Storm Prediction Center Severe Thunderstorm Watch 321
4 min read
2 weeks 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 321
NWS Storm Prediction Center Norman OK
1145 PM CDT Sat May 24 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Far Northwest Arkansas
Southern Kansas
Far Southwest Missouri
Northern Oklahoma
* Effective this Saturday night and Sunday morning from 1145 PM
until 700 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorm coverage is expected to increase tonight
across northern OK into southern KS and adjacent portions of far
northwest AR and far southwest MO. Steep mid-level lapse rates and
strong vertical shear will support the potential for large hail.
Isolated damaging gusts are also possible, particularly across
southwestern KS where a potential bowing segment may move into the
region from the northwest.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 20 miles west southwest
of Garden City KS to 30 miles east of Grove OK. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 319...WW 320...
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
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 321
NWS Storm Prediction Center Norman OK
1145 PM CDT Sat May 24 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Far Northwest Arkansas
Southern Kansas
Far Southwest Missouri
Northern Oklahoma
* Effective this Saturday night and Sunday morning from 1145 PM
until 700 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorm coverage is expected to increase tonight
across northern OK into southern KS and adjacent portions of far
northwest AR and far southwest MO. Steep mid-level lapse rates and
strong vertical shear will support the potential for large hail.
Isolated damaging gusts are also possible, particularly across
southwestern KS where a potential bowing segment may move into the
region from the northwest.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 20 miles west southwest
of Garden City KS to 30 miles east of Grove OK. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 319...WW 320...
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
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 321 SEVERE TSTM AR KS MO OK 250445Z - 251200Z
AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
20WSW GCK/GARDEN CITY KS/ - 30E GMJ/GROVE OK/
..AVIATION COORDS.. 50NM N/S /17WSW GCK - 22N RZC/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 38610106 37409420 35819420 37020106
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 321 Status Report Message has not been issued yet.
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (5%)
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 (40%)
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 (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.
