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 139
NWS Storm Prediction Center Norman OK
1245 AM CDT Tue May 4 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Oklahoma
* Effective this Tuesday morning from 1245 AM until 500 AM 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...Scattered severe thunderstorms will continue eastward
overnight across southern Oklahoma, with large hail and damaging
winds a possibility mainly across south-central toward southeast
Oklahoma.
The severe thunderstorm watch area is approximately along and 30
statute miles north and south of a line from 30 miles west of
Ardmore OK to 40 miles east northeast of Durant OK. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 137...WW 138...
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 450. Mean storm motion vector
27025.
...Guyer
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 139
NWS Storm Prediction Center Norman OK
1245 AM CDT Tue May 4 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Oklahoma
* Effective this Tuesday morning from 1245 AM until 500 AM 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...Scattered severe thunderstorms will continue eastward
overnight across southern Oklahoma, with large hail and damaging
winds a possibility mainly across south-central toward southeast
Oklahoma.
The severe thunderstorm watch area is approximately along and 30
statute miles north and south of a line from 30 miles west of
Ardmore OK to 40 miles east northeast of Durant OK. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 137...WW 138...
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 450. Mean storm motion vector
27025.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 139 SEVERE TSTM OK 040545Z - 041000Z
AXIS..30 STATUTE MILES NORTH AND SOUTH OF LINE..
30W ADM/ARDMORE OK/ - 40ENE DUA/DURANT OK/
..AVIATION COORDS.. 25NM N/S /19WNW ADM - 41S MLC/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 27025.
LAT...LON 34729755 34599575 33749575 33849755
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 139 Status Report Messages:
STATUS REPORT #2 ON WW 139
VALID 040735Z - 040840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 WNW GYI
TO 40 WSW MLC.
..GOSS..05/04/21
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 139
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-029-069-095-040840-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN COAL
JOHNSTON MARSHALL
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 139
VALID 040635Z - 040740Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..05/04/21
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 139
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-019-029-069-085-095-099-123-040740-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN CARTER
COAL JOHNSTON LOVE
MARSHALL MURRAY PONTOTOC
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (5%)
|
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 (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.