Hail and Damaging Winds in Oklahoma, August 12, 2011

Name: Hail and Damaging Winds in Oklahoma, August 12, 2011
Start: 2011-08-12T16:00
End: 2011-08-12T21:25
Location: Oklahoma

August 12, 2011 · NWS OUN · 23 events in 12 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $60,000
Crop damage: None recorded
Events: 23

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS OUN wrote it up.

Very hot temperatures returned over Oklahoma after a brief hiatus ahead of a cold front that was moving through Kansas during the afternoon of the 12th. Ahead of the front, several outflow boundaries were located over southern Kansas and northern Oklahoma. Very hot temperatures contributed to a very unstable atmosphere over all of Oklahoma, with thunderstorms developing by mid afternoon. The thunderstorms first formed over parts of central and south-central Oklahoma, and drifted northeast. A severe gust estimated at 70 mph was reported near Lindsay. A larger complex of storms developed over southern Kansas and moved southeast into Oklahoma. More widespread severe weather occurred with this complex, as it organized over Oklahoma. Several locations reported wind gusts over 60 mph, some of which caused damage.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before the first event at Aug 12, 2:05 PM CST, 1 hour 55 minutes earlier.

Area forecast discussion, Aug 12, 2:05 PM CST, 1 hour 55 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
305 PM CDT FRI AUG 12 2011

.DISCUSSION...VERY HOT WEATHER HAS REBOUNDED TODAY WITH THE ABSENCE
OF CLOUD COVER. AREAS IN OUR HEAT ADVISORY ARE QUITE HOT AND
HUMID...WITH HEAT INDICES 104 TO 107 DEGREES AT 3 PM. ALTHOUGH
OUTFLOW BOUNDARIES WERE ENTERING NORTHERN OKLAHOMA...A SYNOPTIC COLD
FRONT WAS LAGGING CONSIDERABLY...AND WAS LOCATED FROM WESTERN KANSAS
TO CENTRAL NEBRASKA. MODELS FORECAST THIS FRONT TO SETTLED DOWN INTO
CENTRAL OKLAHOMA AND BECOME WEST TO EAST ORIENTED ON SATURDAY. SOUTH
OF THE BOUNDARY...AND BARRING THE UNCERTAINTY ASSOCIATED WITH
THUNDERSTORM OUTFLOWS...CONDITIONS APPEARS FAVORABLE FOR HEAT
ADVISORY CRITERIA TO BE MET THROUGH THE WEEKEND. THEREFORE...WE WILL
MAINTAIN A PORTION OF THE ADVISORY FOR FAR SOUTHERN/SOUTHWESTERN
OKLAHOMA AND ALL OF WESTERN NORTH TEXAS.

THE THUNDER FORECAST IS COMPLEX...BUT THERE ARE ENOUGH FORCING
MECHANISMS ENTERING A BROAD AND STRONGLY UNSTABLE WARM SECTOR...
THAT WIDESPREAD STORMS...SOME SEVERE...ARE EXPECTED THIS EVENING AND
TONIGHT. THE PRIMARY EVENT WILL LIKELY ORGANIZE ALONG OUTFLOW
BOUNDARIES IN SOUTHERN KANSAS AND FAR NORTHERN OKLAHOMA EARLY THIS
EVENING. EXPECT A COMPLEX DRIVEN BY ITS COLD POOL...TO TRACK ALONG A
REMNANT WARM FRONT INTO CENTRAL AND SOUTHEAST OKLAHOMA. THE TYPE OF
INSTABILITY THAT HAS BUILT UP TODAY MAY SUPPORT SIGNIFICANT WIND AND
HAIL...ESPECIALLY WITH SHEAR INCREASING AS A MID LEVEL TROUGH
ENCROACHES ON THE REGION THIS EVENING.

THE FRONT AND OUTFLOW BOUNDARIES MAY AGAIN SUPPORT SCATTERED STORMS
SATURDAY AND SUNDAY...ESPECIALLY FROM INTERSTATE 40 SOUTHWARD. POPS
ARE FAIRLY LOW...HOWEVER...GIVEN LESSER UPPER SUPPORT. FIRE WEATHER
COULD BECOME A CONCERN IN THE DRIER AREAS EARLY NEXT WEEK...AS SOUTH
WINDS RESPOND TO A LEE TROUGH. OVERALL...THE NEXT WEEK LOOKS
HOT...BUT NOT QUITE AS EXCEPTIONALLY HOT AS WE SAW IN JULY AND EARLY
AUGUST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  73  96  71  98 /  70  20  10  10
HOBART OK         74  98  72 102 /  50  20  10   0
WICHITA FALLS TX  75 104  74 104 /  30  20  10   0
GAGE OK           68  91  68  96 /  60  10  10  10
PONCA CITY OK     71  92  67  91 /  80  20  10   0
DURANT OK         73  98  73  98 /  50  20  10   0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...HEAT ADVISORY UNTIL 10 PM CDT THIS EVENING FOR OKZ040>043-047-
     048-051-052.

     HEAT ADVISORY UNTIL 10 PM CDT SUNDAY FOR OKZ033>039-044>046-050.

TX...HEAT ADVISORY UNTIL 10 PM CDT SUNDAY FOR TXZ083>090.

&&

26/22
BURKE

Hazardous weather outlook, Aug 12, 3:00 PM CST, 1 hour before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
400 PM CDT FRI AUG 12 2011

OKZ004>048-050>052-TXZ083>090-131000-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
400 PM CDT FRI AUG 12 2011

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS PARTS OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE RISK AREA COVERS LOCATIONS IN OKLAHOMA AND NORTH TEXAS GENERALLY
NORTH AND EAST OF A LINE FROM ERICK... TO FREDERICK... TO WICHITA
FALLS.

TIMING...
THE MOST LIKELY TIME FOR SEVERE STORMS WILL BE THIS AFTERNOON
THROUGH THE OVERNIGHT HOURS.

IMPACTS...
DAMAGING WIND GUSTS TO 75 MPH AND LARGE HAIL TO THE SIZE OF
GOLFBALLS.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL IN AND NEAR
THE RISK AREA SHOULD BE PREPARED FOR SEVERE WEATHER OPERATIONS THIS
AFTERNOON INTO THE OVERNIGHT HOURS.

DISCUSSION...
THUNDERSTORMS WERE INCREASING ACROSS PORTIONS OF OF SOUTH CENTRAL
OKLAHOMA INTO A SMALL PART OF WESTERN NORTH TEXAS... AS WELL AS IN
THE EASTERN OKLAHOMA PANHANDLE... FRIDAY AFTERNOON. OTHER STORMS ARE
EXPECTED TO DEVELOP ALONG A SERIES OF BOUNDARIES ACROSS NORTHERN
OKLAHOMA AND KANSAS. STORMS DEVELOPING IN KANSAS WILL ALSO SPREAD
SOUTH INTO OKLAHOMA THROUGH THE EVENING. DAMAGING THUNDERSTORM WINDS
AND HAIL TO THE SIZE OF GOLF BALLS WILL BE POSSIBLE WITH THE
STRONGEST STORMS. LOCALLY HEAVY RAIN AND FREQUENT CLOUD TO GROUND
LIGHTNING WILL ALSO BE LIKELY.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SATURDAY AUG 13.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...90 PERCENT.

OTHER HAZARDOUS WEATHER...
HOT TEMPERATURES WERE ONGOING LATE THIS AFTERNOON ESPECIALLY ACROSS
PARTS OF SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS WHERE A HEAT
ADVISORY REMAINS IN EFFECT.

WILDFIRE POTENTIAL REMAINS VERY HIGH THIS AFTERNOON... ESPECIALLY IN
PARTS OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
ALTHOUGH THE MOST WIDESPREAD RAIN EVENT WILL OCCUR FRIDAY NIGHT...
THUNDERSTORM CHANCES WILL CONTINUE OVER THE WEEKEND. A COLD FRONT
WILL STALL FROM SOUTHERN OKLAHOMA INTO THE TEXAS PANHANDLE... WITH
MODERATE NORTHWEST FLOW ALOFT. THIS FAVORS A GREATER CHANCE OF
STORMS OVER WESTERN AND SOUTHERN OKLAHOMA... AND WESTERN NORTH
TEXAS. SOME OF THE STORMS ON SATURDAY MAY BECOME STRONG TO SEVERE.

OTHER HAZARDOUS WEATHER...
LONG TERM DROUGHT WILL KEEP WILDFIRE POTENTIAL HIGH THROUGH NEXT
WEEK... BUT ESPECIALLY ON MONDAY AND TUESDAY... WHICH WILL SEE
BREEZY SOUTH WINDS.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
SATURDAY AUGUST 13.

CJS

In the hours before

Special weather statement, Aug 12, 2:13 PM CST, 1 hour 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
313 PM CDT FRI AUG 12 2011

OKZ039-045-TXZ090-122100-
JEFFERSON OK-STEPHENS OK-CLAY TX-
313 PM CDT FRI AUG 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CLAY...JEFFERSON AND
STEPHENS COUNTIES.

AT 313 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 3
MILES SOUTHEAST OF COMANCHE TO RYAN TO BLUEGROVE...MOVING NORTHEAST
AT 10 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH...
WIND GUSTS TO 50 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

LAT...LON 3357 9834 3411 9821 3411 9817 3414 9814
      3448 9814 3464 9811 3467 9756 3390 9756
      3390 9757 3391 9760 3397 9761 3399 9768
      3384 9785 3388 9797 3363 9798

BURKE

Special weather statement, Aug 12, 2:37 PM CST, 1 hour 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
337 PM CDT FRI AUG 12 2011

OKZ027-028-122130-
GRADY OK-MCCLAIN OK-
337 PM CDT FRI AUG 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR GRADY AND MCCLAIN COUNTIES.

AT 337 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES NORTH OF
BRADLEY...MOVING NORTHEAST AT 5 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

LAT...LON 3485 9752 3486 9767 3482 9767 3479 9776
      3495 9787 3524 9767 3489 9735

BURKE

Special weather statement, Aug 12, 3:06 PM CST, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
406 PM CDT FRI AUG 12 2011

OKZ027-039-040-046-122130-
CARTER OK-GARVIN OK-GRADY OK-STEPHENS OK-
406 PM CDT FRI AUG 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CARTER...GARVIN...GRADY AND
STEPHENS COUNTIES.

AT 406 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM BRAY
TO LOCO...MOVING EAST AT 10 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 55 MPH...
HEAVY RAIN...
FREQUENT CLOUD TO GROUND LIGHTNING...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

LAT...LON 3429 9779 3450 9777 3475 9797 3484 9749
      3452 9735 3429 9734

BURKE

Special weather statement, Aug 12, 3:25 PM CST, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
425 PM CDT FRI AUG 12 2011

OKZ030>032-122200-
HUGHES OK-POTTAWATOMIE OK-SEMINOLE OK-
425 PM CDT FRI AUG 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR HUGHES...POTTAWATOMIE AND
SEMINOLE COUNTIES.

AT 425 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM MAUD
TO KONAWA...MOVING EAST AT 10 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH...
WIND GUSTS TO 50 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

LAT...LON 3491 9640 3492 9641 3490 9643 3491 9648
      3489 9650 3490 9656 3492 9656 3491 9659
      3494 9669 3493 9670 3496 9689 3522 9686
      3521 9635

BURKE

Special weather statement, Aug 12, 3:38 PM CST, 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
438 PM CDT FRI AUG 12 2011

OKZ027-028-040-122230-
GARVIN OK-GRADY OK-MCCLAIN OK-
438 PM CDT FRI AUG 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR GARVIN...GRADY AND MCCLAIN
COUNTIES.

AT 437 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 4
MILES NORTHWEST OF ALEX TO 5 MILES SOUTHWEST OF PERNELL...MOVING
NORTHEAST AT 20 MPH. THESE STORMS WILL APPROACH INTERSTATE 35 FROM
WASHINGTON AND PURCELL DOWN TO PAULS VALLEY.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH...
WIND GUSTS TO 50 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

LAT...LON 3468 9756 3493 9794 3518 9751 3506 9734
      3502 9736 3495 9733 3497 9730 3492 9715
      3463 9716 3462 9720 3459 9717 3451 9716
      3451 9756

BURKE

Special weather statement, Aug 12, 3:49 PM CST, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
449 PM CDT FRI AUG 12 2011

OKZ045-TXZ090-122230-
JEFFERSON OK-CLAY TX-
449 PM CDT FRI AUG 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CLAY AND JEFFERSON COUNTIES.

AT 449 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 5
MILES SOUTHEAST OF PETROLIA TO 2 MILES NORTHEAST OF BELLEVUE...MOVING
NORTHEAST AT 10 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 55 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

LAT...LON 3360 9812 3379 9812 3404 9829 3416 9798
      3396 9773 3393 9773 3393 9775 3389 9778
      3389 9779 3384 9785 3387 9797 3359 9798

BURKE

The radar

The Norman radar (KTLX), 63 km away, was scanning. The volume nearest the first event began at 21:58 UTC.

Open the radar archive at this moment

Event by event

20 thunderstorm wind, 3 hail. Local standard time, as filed.

Thunderstorm Wind, Garvin

When: August 12, 4:00 PM CST
Where: Garvin County, Lindsay
Measured: 61 kt (70 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 34.840, -97.610

No damage was reported with the wind gust.

Thunderstorm Wind, Ellis

When: August 12, 4:55 PM CST
Where: Ellis County, 14 mi ENE of Catesby
Measured: 61 kt (70 mph) estimated gust
Property damage: $50,000
Reported by: Emergency Manager
Coordinates: 36.568, -99.727

An 80 X 120 foot pole barn was destroyed. Monetary damages were estimated.

Hail, Pottawatomie

When: August 12, 5:00 PM CST
Where: Pottawatomie County, 5 mi NE of Pink
Measured: 1.75 in hail
Reported by: SHAVE Project
Coordinates: 35.311, -97.057

Hail, Pottawatomie

When: August 12, 5:00 PM CST
Where: Pottawatomie County, 4 mi N of Pink
Measured: 1 in hail
Reported by: SHAVE Project
Coordinates: 35.318, -97.120

Hail, Pottawatomie

When: August 12, 5:15 PM CST
Where: Pottawatomie County, 5 mi WSW of Shawnee
Measured: 1.75 in hail
Reported by: SHAVE Project
Coordinates: 35.302, -97.002

Thunderstorm Wind, Woodward

When: August 12, 5:27 PM CST
Where: Woodward County, 6 mi W of Woodward
Measured: 52 kt (60 mph) measured gust
Reported by: AWOS
Coordinates: 36.430, -99.498

Thunderstorm Wind, Ellis

When: August 12, 5:35 PM CST
Where: Ellis County, Fargo
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 36.370, -99.620

Several trees and 10 electrical poles were blown down. The Ag building at the vocational school in town was totally destroyed, as were several smaller out buildings. Windows were broken out of several buildings and one roof was ripped off of a mobile home. Monetary damage estimates were not available.

Thunderstorm Wind, Woodward

When: August 12, 5:45 PM CST
Where: Woodward County, Woodward
Measured: 70 kt (81 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 36.430, -99.390

Part of the roof at an apartment complex was damaged. The complex was located on the west side of town. Monetary damage estimates were not available.

Thunderstorm Wind, Woodward

When: August 12, 5:50 PM CST
Where: Woodward County, Woodward
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 36.430, -99.390

The Woodward Fire Department building sustained roof damage. Monetary damage estimates were not available.

Thunderstorm Wind, Alfalfa

When: August 12, 6:10 PM CST
Where: Alfalfa County, 2 mi W of Burlington
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 36.900, -98.456

No damage was reported with the wind gust.

Thunderstorm Wind, Grant

When: August 12, 7:06 PM CST
Where: Grant County, Nash
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 36.670, -98.050

No damage was reported with the wind gust.

Thunderstorm Wind, Garfield

When: August 12, 7:25 PM CST
Where: Garfield County, Hillsdale
Measured: 52 kt (60 mph) estimated gust
Reported by: Fire Department/Rescue
Coordinates: 36.560, -97.990

No damage was reported with the wind gust.

Thunderstorm Wind, Major

When: August 12, 7:30 PM CST
Where: Major County, 4 mi E of Meno
Measured: 53 kt (61 mph) measured gust
Reported by: Mesonet
Coordinates: 36.390, -98.108

The wind gust was measured at the Lahoma mesonet site.

Thunderstorm Wind, Garfield

When: August 12, 7:40 PM CST
Where: Garfield County, Enid
Measured: 52 kt (60 mph) estimated gust
Property damage: $5,000
Reported by: Emergency Manager
Coordinates: 36.400, -97.880

Power lines were downed at the intersection of Washington Street and Broadway Avenue. Monetary damages were estimated.

Thunderstorm Wind, Garfield

When: August 12, 7:43 PM CST
Where: Garfield County, 1.11 mi E of Enid
Measured: 56 kt (64 mph) estimated gust
Property damage: $5,000
Reported by: Emergency Manager
Coordinates: 36.400, -97.860

Power lines were downed at the intersection of 1th Street and Randolph Avenue. Monetary damages were estimated.

Thunderstorm Wind, Garfield

When: August 12, 7:45 PM CST
Where: Garfield County, 4 mi SE of Enid
Measured: 56 kt (64 mph) measured gust
Reported by: AWOS
Coordinates: 36.359, -97.829

Thunderstorm Wind, Logan

When: August 12, 8:15 PM CST
Where: Logan County, 4 mi SSE of Marshall
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 36.106, -97.593

Thunderstorm Wind, Logan

When: August 12, 8:20 PM CST
Where: Logan County, 4 mi SSE of Marshall
Measured: 55 kt (63 mph) measured gust
Reported by: Mesonet
Coordinates: 36.106, -97.593

Thunderstorm Wind, Custer

When: August 12, 8:30 PM CST
Where: Custer County, 5 mi SW of Butler
Measured: 51 kt (59 mph) measured gust
Reported by: Mesonet
Coordinates: 35.589, -99.253

Thunderstorm Wind, Washita

When: August 12, 9:00 PM CST
Where: Washita County, 4 mi WNW of Bessie
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 35.402, -99.056

Thunderstorm Wind, Custer

When: August 12, 9:08 PM CST
Where: Custer County, 3 mi ENE of Clinton
Measured: 51 kt (59 mph) measured gust
Reported by: AWOS
Coordinates: 35.527, -98.921

Thunderstorm Wind, Oklahoma

When: August 12, 9:23 PM CST
Where: Oklahoma County, 4 mi W of Edmond
Measured: 50 kt (58 mph) measured gust
Reported by: Amateur Radio
Coordinates: 35.650, -97.551

The wind gust was measured near the intersection Pennsylvania Avenue and Edmond Road.

Thunderstorm Wind, Oklahoma

When: August 12, 9:25 PM CST
Where: Oklahoma County, 4 mi NNW of Bethany
Measured: 52 kt (60 mph) estimated gust
Reported by: Amateur Radio
Coordinates: 35.563, -97.667

The wind gust was estimated at the intersection of Hefner and County Line Roads.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Oklahoma in 2011 Every state in 2011 This day in weather history Warnings in Oklahoma, August 2011

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 345239, 345245, 345269, 345273, 345275, 345240, 345241, 345243, 345247, 345248, 345249, 345250, 345251, 345253, 345254, 345246, 345255, 345256, 345258, 345259, 345260, 345262, 345261.