Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 78
NWS Storm Prediction Center Norman OK
615 PM CDT Wed Apr 17 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South Central Oklahoma
North Central Texas
* Effective this Wednesday night and Thursday morning from 615 PM
until 200 AM CDT.
* Primary threats include...
Widespread large hail and isolated very large hail events to 2.5
inches in diameter likely
Scattered damaging wind gusts to 70 mph likely
A tornado or two possible
SUMMARY...Thunderstorms will form across the watch area early this
evening and spread eastward. Large hail and damaging winds are the
main threat, but there is some concern for a tornado or two along
the Red River valley.
The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 20 miles east of Ardmore
OK to 50 miles south southeast of Brownwood TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU8).
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 75...WW 76...WW 77...
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
24035.
...Hart
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 78
NWS Storm Prediction Center Norman OK
615 PM CDT Wed Apr 17 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South Central Oklahoma
North Central Texas
* Effective this Wednesday night and Thursday morning from 615 PM
until 200 AM CDT.
* Primary threats include...
Widespread large hail and isolated very large hail events to 2.5
inches in diameter likely
Scattered damaging wind gusts to 70 mph likely
A tornado or two possible
SUMMARY...Thunderstorms will form across the watch area early this
evening and spread eastward. Large hail and damaging winds are the
main threat, but there is some concern for a tornado or two along
the Red River valley.
The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 20 miles east of Ardmore
OK to 50 miles south southeast of Brownwood TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU8).
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 75...WW 76...WW 77...
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
24035.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 78 SEVERE TSTM OK TX 172315Z - 180700Z
AXIS..50 STATUTE MILES EAST AND WEST OF LINE..
20E ADM/ARDMORE OK/ - 50SSE BWD/BROWNWOOD TX/
..AVIATION COORDS.. 45NM E/W /25E ADM - 69ENE JCT/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 34299579 31129777 31129947 34299755
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 78 Status Report Messages:
STATUS REPORT #5 ON WW 78
VALID 180420Z - 180540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 W TPL TO
35 SSE SEP TO 35 SSW FTW TO 10 WNW FTW TO 35 NW FTW TO 5 ENE GYI
TO 35 ENE DUA.
..LEITMAN..04/18/19
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 78
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC027-035-085-097-099-113-121-139-145-147-181-193-217-251-281-
309-439-497-180540-
TX
. TEXAS COUNTIES INCLUDED ARE
BELL BOSQUE COLLIN
COOKE CORYELL DALLAS
DENTON ELLIS FALLS
FANNIN GRAYSON HAMILTON
HILL JOHNSON LAMPASAS
MCLENNAN TARRANT WISE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 78
VALID 180325Z - 180440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 S BWD TO
25 E BWD TO 15 NNE SEP TO 15 N MWL TO 40 NNW FTW TO 20 WSW GYI TO
10 NE GYI TO 10 NE DUA TO 35 NNE DUA.
..LEITMAN..04/18/19
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 78
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-180440-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN
$$
TXC027-035-085-097-099-113-121-139-143-145-147-181-193-217-221-
251-281-309-333-367-425-439-497-180440-
TX
. TEXAS COUNTIES INCLUDED ARE
BELL BOSQUE COLLIN
COOKE CORYELL DALLAS
DENTON ELLIS ERATH
FALLS FANNIN GRAYSON
HAMILTON HILL HOOD
JOHNSON LAMPASAS MCLENNAN
MILLS PARKER SOMERVELL
TARRANT WISE
$$
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.
$$
STATUS REPORT #3 ON WW 78
VALID 180240Z - 180340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SSW BWD
TO 15 WNW SEP TO 30 NNW MWL TO 50 NNW FTW TO 25 SSW ADM TO 5 NNE
ADM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 378.
..LEITMAN..04/18/19
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 78
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-069-095-180340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN JOHNSTON MARSHALL
$$
TXC035-085-093-097-099-113-121-139-143-147-181-193-217-221-237-
251-281-333-367-425-439-497-180340-
TX
. TEXAS COUNTIES INCLUDED ARE
BOSQUE COLLIN COMANCHE
COOKE CORYELL DALLAS
DENTON ELLIS ERATH
FANNIN GRAYSON HAMILTON
HILL HOOD JACK
JOHNSON LAMPASAS MILLS
PARKER SOMERVELL TARRANT
WISE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 78
VALID 180135Z - 180240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEITMAN..04/18/19
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 78
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-019-069-085-095-180240-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN CARTER JOHNSTON
LOVE MARSHALL
$$
TXC035-085-093-097-099-113-121-133-139-143-147-181-193-217-221-
237-251-281-333-337-363-367-425-439-497-180240-
TX
. TEXAS COUNTIES INCLUDED ARE
BOSQUE COLLIN COMANCHE
COOKE CORYELL DALLAS
DENTON EASTLAND ELLIS
ERATH FANNIN GRAYSON
HAMILTON HILL HOOD
JACK JOHNSON LAMPASAS
MILLS MONTAGUE PALO PINTO
PARKER SOMERVELL TARRANT
WISE
$$
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.
$$
STATUS REPORT #1 ON WW 78
VALID 180030Z - 180140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEITMAN..04/18/19
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 78
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-019-069-085-095-180140-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN CARTER JOHNSTON
LOVE MARSHALL
$$
TXC035-085-093-097-099-113-121-133-139-143-147-181-193-217-221-
237-251-281-333-337-363-367-425-439-497-180140-
TX
. TEXAS COUNTIES INCLUDED ARE
BOSQUE COLLIN COMANCHE
COOKE CORYELL DALLAS
DENTON EASTLAND ELLIS
ERATH FANNIN GRAYSON
HAMILTON HILL HOOD
JACK JOHNSON LAMPASAS
MILLS MONTAGUE PALO PINTO
PARKER SOMERVELL TARRANT
WISE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (5%)
|
Wind
Probability of 10 or more severe wind events
|
High (70%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
High (80%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (60%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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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