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 289
NWS Storm Prediction Center Norman OK
120 AM CDT Sun Jun 21 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Oklahoma
North Texas
* Effective this Sunday morning from 120 AM until 700 AM CDT.
* Primary threats include...
Isolated very large hail events to 2 inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...A small MCS should gradually develop along the Red River
through daybreak. Ample instability will foster a risk for severe
hail, especially early, along with a risk for damaging winds towards
dawn.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 80 miles west southwest
of Ardmore OK to 35 miles southeast 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.
&&
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
30020.
...Grams
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 289
NWS Storm Prediction Center Norman OK
120 AM CDT Sun Jun 21 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Oklahoma
North Texas
* Effective this Sunday morning from 120 AM until 700 AM CDT.
* Primary threats include...
Isolated very large hail events to 2 inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...A small MCS should gradually develop along the Red River
through daybreak. Ample instability will foster a risk for severe
hail, especially early, along with a risk for damaging winds towards
dawn.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 80 miles west southwest
of Ardmore OK to 35 miles southeast 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.
&&
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
30020.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 289 SEVERE TSTM OK TX 210620Z - 211200Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
80WSW ADM/ARDMORE OK/ - 35SE DUA/DURANT OK/
..AVIATION COORDS.. 45NM N/S /17ESE SPS - 69NE TTT/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 30020.
LAT...LON 34569831 34319597 32879597 33129831
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 289 Status Report Messages:
STATUS REPORT #4 ON WW 289
VALID 211150Z - 211200Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
WW 289 WILL BE ALLOWED TO EXPIRE AT 211200Z.
..KERR..06/21/20
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 289
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-019-033-067-069-085-095-099-137-211200-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN CARTER COTTON
JEFFERSON JOHNSTON LOVE
MARSHALL MURRAY STEPHENS
$$
TXC077-085-097-121-147-181-231-237-337-497-211200-
TX
. TEXAS COUNTIES INCLUDED ARE
CLAY COLLIN COOKE
DENTON FANNIN GRAYSON
HUNT JACK MONTAGUE
WISE
$$
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.
$$
STATUS REPORT #3 ON WW 289
VALID 211030Z - 211140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/21/20
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 289
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-019-033-067-069-085-095-099-137-211140-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN CARTER COTTON
JEFFERSON JOHNSTON LOVE
MARSHALL MURRAY STEPHENS
$$
TXC077-085-097-121-147-181-231-237-337-497-211140-
TX
. TEXAS COUNTIES INCLUDED ARE
CLAY COLLIN COOKE
DENTON FANNIN GRAYSON
HUNT JACK MONTAGUE
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 289
VALID 210925Z - 211040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/21/20
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 289
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-019-033-067-069-085-095-099-137-211040-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN CARTER COTTON
JEFFERSON JOHNSTON LOVE
MARSHALL MURRAY STEPHENS
$$
TXC077-085-097-121-147-181-231-237-337-497-211040-
TX
. TEXAS COUNTIES INCLUDED ARE
CLAY COLLIN COOKE
DENTON FANNIN GRAYSON
HUNT JACK MONTAGUE
WISE
$$
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.
$$
STATUS REPORT #1 ON WW 289
VALID 210830Z - 210940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/21/20
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 289
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-019-033-067-069-085-095-099-137-210940-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN CARTER COTTON
JEFFERSON JOHNSTON LOVE
MARSHALL MURRAY STEPHENS
$$
TXC077-085-097-121-147-181-231-237-337-497-210940-
TX
. TEXAS COUNTIES INCLUDED ARE
CLAY COLLIN COOKE
DENTON FANNIN GRAYSON
HUNT JACK MONTAGUE
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 (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 (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
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
