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 171
NWS Storm Prediction Center Norman OK
740 PM CDT Thu May 7 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Kansas
Western and central Oklahoma
Northeast Texas Panhandle
* Effective this Thursday night and Friday morning from 740 PM
until 300 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
A tornado or two possible
SUMMARY...Several supercells will likely develop, initially across
southwest Kansas and then farther south across the northeast Texas
Panhandle into northwest Oklahoma. These severe storms should
consolidate into a broader MCS towards central Oklahoma later
tonight.
The severe thunderstorm watch area is approximately along and 95
statute miles east and west of a line from 20 miles east of Clinton
OK to 35 miles northwest of Medicine Lodge KS. 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 170...
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
30035.
...Grams
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 171
NWS Storm Prediction Center Norman OK
740 PM CDT Thu May 7 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Kansas
Western and central Oklahoma
Northeast Texas Panhandle
* Effective this Thursday night and Friday morning from 740 PM
until 300 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
A tornado or two possible
SUMMARY...Several supercells will likely develop, initially across
southwest Kansas and then farther south across the northeast Texas
Panhandle into northwest Oklahoma. These severe storms should
consolidate into a broader MCS towards central Oklahoma later
tonight.
The severe thunderstorm watch area is approximately along and 95
statute miles east and west of a line from 20 miles east of Clinton
OK to 35 miles northwest of Medicine Lodge KS. 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 170...
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
30035.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 171 SEVERE TSTM KS OK TX 080040Z - 080800Z
AXIS..95 STATUTE MILES EAST AND WEST OF LINE..
20E CSM/CLINTON OK/ - 35NW P28/MEDICINE LODGE KS/
..AVIATION COORDS.. 85NM E/W /61W OKC - 69W ICT/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 30035.
LAT...LON 35320053 37630077 37639730 35329716
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 171 Status Report Messages:
STATUS REPORT #3 ON WW 171
VALID 080545Z - 080640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 ESE CSM TO
45 ENE CSM TO 15 WSW CQB.
..GOSS..05/08/20
ATTN...WFO...DDC...ICT...OUN...AMA...
&&
STATUS REPORT FOR WS 171
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC015-017-027-051-081-087-109-125-149-080640-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
CADDO CANADIAN CLEVELAND
GRADY LINCOLN MCCLAIN
OKLAHOMA POTTAWATOMIE WASHITA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 171
VALID 080430Z - 080540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 E BGD TO
45 SW AVK TO 25 WSW P28 TO 30 SSE ICT.
..SPC..05/08/20
ATTN...WFO...DDC...ICT...OUN...AMA...
&&
STATUS REPORT FOR WS 171
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC077-191-080540-
KS
. KANSAS COUNTIES INCLUDED ARE
HARPER SUMNER
$$
OKC003-011-015-017-027-039-043-047-051-053-071-073-081-083-087-
093-103-109-119-125-129-149-080540-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ALFALFA BLAINE CADDO
CANADIAN CLEVELAND CUSTER
DEWEY GARFIELD GRADY
GRANT KAY KINGFISHER
LINCOLN LOGAN MCCLAIN
MAJOR NOBLE OKLAHOMA
PAYNE POTTAWATOMIE ROGER MILLS
WASHITA
$$
TXC211-483-080540-
TX
. TEXAS COUNTIES INCLUDED ARE
HEMPHILL WHEELER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 171
VALID 080305Z - 080440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SSW LBL
TO 40 SSW DDC TO 25 E DDC TO 45 S RSL.
..BENTLEY..05/08/20
ATTN...WFO...DDC...ICT...OUN...AMA...
&&
STATUS REPORT FOR WS 171
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC007-025-033-077-095-097-119-151-191-080440-
KS
. KANSAS COUNTIES INCLUDED ARE
BARBER CLARK COMANCHE
HARPER KINGMAN KIOWA
MEADE PRATT SUMNER
$$
OKC003-007-011-015-017-027-039-043-045-047-051-053-059-071-073-
081-083-087-093-103-109-119-125-129-149-151-153-080440-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ALFALFA BEAVER BLAINE
CADDO CANADIAN CLEVELAND
CUSTER DEWEY ELLIS
GARFIELD GRADY GRANT
HARPER KAY KINGFISHER
LINCOLN LOGAN MCCLAIN
MAJOR NOBLE OKLAHOMA
PAYNE POTTAWATOMIE ROGER MILLS
WASHITA WOODS WOODWARD
$$
TXC179-211-295-357-393-483-080440-
TX
. TEXAS COUNTIES INCLUDED ARE
GRAY HEMPHILL LIPSCOMB
OCHILTREE ROBERTS WHEELER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability of 1 or more hailstones > 2 inches
|
High (70%)
|
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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