Tornadoes and Hail in Oklahoma, May 22, 2011

Name: Tornadoes and Hail in Oklahoma, May 22, 2011
Start: 2011-05-22T16:27
End: 2011-05-22T22:53
Location: Oklahoma

May 22, 2011 · NWS TSA · 38 events in 14 counties and zones

A very moist and very unstable air mass developed across eastern Oklahoma on the afternoon and evening of the 22nd as a dry line moved into the area from the west. Severe thunderstorms, including supercells, developed ahead of the dry line and moved across the area producing tornadoes, large hail up to softball size, and damaging wind gusts.

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: 14
Property damage: $2.9 million
Crop damage: None recorded
Events: 38

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 TSA wrote it up.

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 Tulsa, OK wrote its last area forecast discussion before the first event at May 22, 2:10 PM CST, 2 hours 17 minutes earlier.

Area forecast discussion, May 22, 2:10 PM CST, 2 hours 17 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
310 PM CDT SUN MAY 22 2011

.DISCUSSION...
SEVERAL SEVERE WEATHER EPISODES EXPECTED OVER THE NEXT FEW DAYS.

DRYLINE CURRENTLY EXTENDS FROM SERN KS INTO SWRN OK...WITH AN
EXTREMELY UNSTABLE AIRMASS (CAPES PUSHING 5000 J/KG) ACROSS THE
FORECAST AREA. CONVECTION HAS RECENTLY IGNITED ALONG THE BOUNDARY IN
SERN KS...AND EXPECT STORMS TO CONTINUE TO GRADUALLY DEVELOP FARTHER
S AND E ACROSS NERN OK AND PERHAPS NWRN AR THE REMAINDER OF THE DAY
AND INTO THE EARLY EVENING. ISOLATED THUNDERSTORMS WILL BE POSSIBLE
FARTHER S ALONG THE DRYLINE...WHICH COULD IMPACT PARTS OF SERN OK.
GIVEN THE VERY HIGH INSTABILITY AND SUFFICIENT SHEAR...SUPERCELLS
ARE EXPECTED...VERY LARGE HAIL AND ISOLATED TORNADOES POSSIBLE.

CONVECTION SHOULD WANE LATER THIS EVENING WITH THE LOSS OF
HEATING...ALTHOUGH MODEL GUIDANCE IS SUGGESTING ADDITIONAL STORMS
ACROSS NE OK LATER TONIGHT/MONDAY MORNING ASSOCIATED WITH THE
STRENGTHENING LOW-LEVEL JET. ATMOSPHERE IS EXPECTED TO ONCE AGAIN
BECOME VERY UNSTABLE DURING THE AFTERNOON...WITH STORMS DEVELOPING
AS A STRONGER BAND OF MID-LEVEL WINDS PUNCHES E. POSSIBLE BOUNDARY
INTERACTIONS BETWEEN DRYLINE AND ANY LEFTOVER CONVECTIVE OUTFLOW(S)
COULD ENHANCE THE TORNADO POTENTIAL. HOW THE MORNING MCS EVOLVES
AND WHERE ANY LEFTOVER CONVECTIVE BOUNDARIES SETUP WILL BE CRUCIAL
IN DETERMINING THE BEST LOCATION OF ADDITIONAL SEVERE WEATHER FOR
MONDAY AFTERNOON.

YET ANOTHER SIGNIFICANT SEVERE WEATHER EVENT IS SHAPING UP FOR LATE
TUESDAY/TUESDAY NIGHT AS THE UPPER WAVE FINALLY EJECTS E INTO THE
CNTRL/SRN PLAINS. CONDITIONS MAY REMAINED CAPPED THROUGH MUCH OF THE
AFTERNOON...WITH STORMS DEVELOPING DURING THE EVENING NEAR THE
DEEPENING SFC LOW AND ALONG THE TRAILING DRYLINE. COMBINATION OF
STRONG INSTABILITY/50-60KT WLY MID-LEVEL JET/40-50KT SLY LOW-LEVEL
JET WILL SUPPORT ROTATING STORMS AS THE ACTIVITY SPREADS INTO ERN OK
DURING THE EVENING AND EVENTUALLY NW AR.

UPPER LOW AND ASSOCIATED FRONT WILL SLOWLY PUSH E OF THE AREA BY
WEDNESDAY/WEDNESDAY NIGHT. ANY STORMS WILL LIKELY BE CONFINED TO
ERN SECTIONS OF THE FORECAST AREA ON WEDNESDAY...WITH DRIER/COOLER
WEATHER FOR THE REMAINDER OF THE WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   70  81  69  85 /  40  70  80  20
FSM   68  84  68  84 /  30  50  50  20
MLC   71  82  71  84 /  40  30  40  20
BVO   68  79  68  85 /  40  60  80  20
FYV   66  78  67  81 /  40  50  70  30
BYV   66  79  64  81 /  40  60  80  30
MKO   69  81  68  83 /  40  50  60  20
MIO   68  80  67  83 /  40  60  80  30
F10   70  81  70  85 /  40  50  50  20
HHW   70  84  69  84 /  40  20  30  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.
&&

SHORT TERM...06
LONG TERM....18

Hazardous weather outlook, May 22, 4:04 PM CST, 23 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
504 PM CDT SUN MAY 22 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-231000-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
504 PM CDT SUN MAY 22 2011

...SEVERE THUNDERSTORMS POSSIBLE THIS EVENING... INCLUDING THE
CHANCE FOR TORNADOES AND VERY LARGE HAIL...

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...TODAY AND TONIGHT.
TORNADO.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ANY TIME.

SEVERE THUNDERSTORM.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ANY TIME.

FLASH FLOOD.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...TONIGHT.

SIGNIFICANT WINDS.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A DRYLINE
SITUATED ALONG THE WESTERN PERIPHERY OF THE FORECAST AREA. WITH A
VERY MOIST AND UNSTABLE AIRMASS IN PLACE... THIS ACTIVITY SHOULD
QUICKLY BECOME SEVERE AND MOVE NORTHEASTWARD ACROSS THE REGION.
THERE WILL BE A POSSIBILITY FOR TORNADOES AND VERY LARGE HAIL.

AS STORMS EVOLVE OVERNIGHT... THE THREAT WILL SLOWLY TRANSITION TO MORE
OF A STRAIGHT LINE WIND... LARGE HAIL...AND HEAVY RAINFALL EVENT.
FLASH FLOODING POTENTIAL WILL INCREASE OVERNIGHT.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
ACTIVATION OF THE REGIONAL SPOTTER NETWORK LIKELY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
MONDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL...HEAVY RAIN POTENTIAL.
TUESDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
WEDNESDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
THURSDAY...NO HAZARDS.
FRIDAY...NO HAZARDS.
SATURDAY...NO HAZARDS.

EXTENDED DISCUSSION...
A LOW AMPLITUDE SHORTWAVE TROUGH IS EXPECTED TO MOVE NORTHEAST
ACROSS THE REGION ON MONDAY. THIS WILL COMBINE WITH THE MOIST AND
VERY UNSTABLE AIRMASS IN PLACE TO GENERATE WIDESPREAD THUNDERSTORM
ACTIVITY ALONG THE DRYLINE AND A LINGERING FRONTAL BOUNDARY NEAR
THE KANSAS BORDER. DISCRETE STORMS WILL POSE THE RISK OF VERY
LARGE HAIL AND POSSIBLY ISOLATED TORNADOES. STORMS WILL EVENTUALLY CONGEAL
INTO CLUSTERS WITH DAMAGING WIND AND LARGE HAIL POTENTIAL BY
MONDAY NIGHT... MAINLY OVER NORTHEAST OKLAHOMA. FLASH FLOODING
WILL CONTINUE TO BE A CONCERN...ESPECIALLY IF STORMS TRACK OVER
AREAS AFFECTED BY PREVIOUS ROUNDS OF STORMS.

A SIGNIFICANT PIECE OF SHORTWAVE TROUGH ENERGY IS EXPECTED TO
EJECT INTO THE SOUTHERN PLAINS ON TUESDAY. THUNDERSTORM
DEVELOPMENT IS LIKELY ALONG THE DRYLINE AND SURGING FRONT TUESDAY
NIGHT INTO WEDNESDAY.  SEVERE WEATHER POTENTIAL IS HIGH... AS A MOIST
AND UNSTABLE AIRMASS REMAINS IN PLACE... ALONG WITH AMPLE WIND SHEAR ON
THE SOUTH SIDE OF THE SHORTWAVE TROUGH.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
EMERGENCY MANAGERS WILL NEED TO MONITOR CONDITIONS AND FORECASTS
CLOSELY OVER THE NEXT SEVERAL DAYS... AS A PROLONGED PERIOD OF SEVERE
WEATHER IS LIKELY.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Special weather statement, May 22, 4:17 PM CST, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
517 PM CDT SUN MAY 22 2011

OKZ058-222245-
OTTAWA OK-
517 PM CDT SUN MAY 22 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 545 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHEAST OKLAHOMA
     NORTHERN OTTAWA

AT 518 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES SOUTHWEST
OF COMMERCE...MOVING NORTHEAST AT 30 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...MIAMI...COMMERCE...OTTAWA...
PEORIA...QUAPAW...CARDIN...PICHER AND I-44 NEAR MILE MARKER 0.

THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3700 9461 3684 9461 3680 9494 3691 9500
      3695 9500 3698 9504 3700 9503 3699 9501
      3701 9500 3700 9462
TIME...MOT...LOC 2218Z 240DEG 24KT 3691 9490

The radar

The Tulsa radar (KINX), 108 km away, was scanning. The volume nearest the first event began at 22:24 UTC.

Open the radar archive at this moment

Event by event

20 hail, 12 tornado, 6 thunderstorm wind. Local standard time, as filed.

Hail, Ottawa

When: May 22, 4:27 PM CST
Where: Ottawa County, 2 mi S of Picher
Measured: 0.88 in hail
Reported by: Emergency Manager
Coordinates: 36.951, -94.830

Hail, Craig

When: May 22, 5:07 PM CST
Where: Craig County, 3 mi E of Vinita
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 36.650, -95.096

Hail, Ottawa

When: May 22, 5:18 PM CST
Where: Ottawa County, 4 mi N of Peoria
Measured: 1.25 in hail
Reported by: Emergency Manager
Coordinates: 36.978, -94.670

Hail, Wagoner

When: May 22, 5:22 PM CST
Where: Wagoner County, 2.17 mi NW of Neodesha
Measured: 1.5 in hail
Reported by: Trained Spotter
Coordinates: 36.070, -95.460

Tornado, Delaware

When: May 22, 5:33 PM CST to 5:48 PM CST
Where: Delaware County, 1.87 mi S of Cleora to 3.5 mi N of Zena
Rating: EF2
Path length: 6.7 mi
Path width: 800 yd
Property damage: $1.0 million
Reported by: NWS Storm Survey
Coordinates: 36.553, -94.973

A tornado severely damaged several permanent homes, destroyed boat docks, damaged a number of other permanent homes, destroyed at least seven mobile homes, and snapped or uprooted many large trees. Maximum estimated wind in the tornado based on this damage was about 130 mph.

The tornado developed south of Cleora and moved almost due east over land. It then moved across a portion of Grand Lake and back over land north of Dennis, where it appeared to move sharply to the southeast across the northern portion of a peninsula. It likely then moved back over Grand Lake where it dissipated. Storm chasers, storm spotters, and a number of citizens witnessed this tornado.

Tornado, Wagoner

When: May 22, 5:42 PM CST to 5:48 PM CST
Where: Wagoner County, 2.63 mi ENE of Neodesha to 3.2 mi WNW of Yonkers
Rating: EF1
Path length: 3.5 mi
Path width: 300 yd
Reported by: NWS Storm Survey
Coordinates: 36.058, -95.384

A tornado snapped or uprooted a number of large trees. Maximum estimated wind in the tornado based on this damage was about 105 mph.

Tornado, Delaware

When: May 22, 5:52 PM CST to 6:26 PM CST
Where: Delaware County, 1.91 mi SW of Dennis to 6.87 mi ESE of Grove Arpt
Rating: EF3
Path length: 16.5 mi
Path width: 1,550 yd
Continued into: McDonald, Mo (SGF)
Injuries: 2 direct, 0 indirect
Property damage: $1.0 million
Reported by: NWS Storm Survey
Coordinates: 36.481, -94.895

This is the first of two segments of this tornado. The tornado developed about 2.5 miles west-southwest of Zena, moved east-northeast across Grand Lake and then south of Zena crossing Highway 59 just north of the intersection with Highway 127. Permanent homes were damaged, barns and outbuildings were destroyed, mobile homes were severely damaged, and large trees were snapped or uprooted. The intensity and width of the tornado increased east of Highway 59 where several permanent homes were severely damaged, two double wide mobile homes were destroyed with only small pieces of debris remaining hundreds of yards from the homesite, and many large trees were snapped or uprooted. This extent of damage continued to the state line where a permanent home was severely damaged, two mobile homes were destroyed, and a steel-framed building was destroyed. Two people were injured in the permanent home. Maximum estimated wind in the tornado based on this damage was about 140 mph. The tornado continued into McDonald County, Missouri for about another mile before dissipating.

Hail, Okfuskee

When: May 22, 6:00 PM CST
Where: Okfuskee County, 0.58 mi NNW of Weleetka
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 35.337, -96.135

Thunderstorm Wind, Okfuskee

When: May 22, 6:00 PM CST
Where: Okfuskee County, 0.57 mi NW of Weleetka
Measured: 61 kt (70 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 35.335, -96.138

Several trees were uprooted by strong thunderstorm winds.

Hail, Okmulgee

When: May 22, 6:07 PM CST
Where: Okmulgee County, Henryetta
Measured: 0.88 in hail
Reported by: Public
Coordinates: 35.450, -95.980

Hail, Cherokee

When: May 22, 6:10 PM CST
Where: Cherokee County, 2 mi N of Peggs
Measured: 4.25 in hail
Reported by: Emergency Manager
Coordinates: 36.109, -95.100

Tornado, Cherokee

When: May 22, 6:27 PM CST to 6:35 PM CST
Where: Cherokee County, 2.16 mi ESE of Peggs to 3.58 mi SSW of Teresita
Rating: EF1
Path length: 3 mi
Path width: 250 yd
Property damage: $70,000
Reported by: NWS Storm Survey
Coordinates: 36.071, -95.063

A tornado destroyed a mobile home, damaged the roof of a permanent home, and snapped or uprooted large trees. Maximum estimated wind in the tornado based on this damage was about 110 mph.

Hail, Cherokee

When: May 22, 6:39 PM CST
Where: Cherokee County, 1.8 mi SSE of Moodys
Measured: 2 in hail
Reported by: Trained Spotter
Coordinates: 36.007, -94.935

Hail, Cherokee

When: May 22, 6:42 PM CST
Where: Cherokee County, Peggs
Measured: 2.75 in hail
Property damage: $50,000
Reported by: Public
Coordinates: 36.080, -95.100

Hail, Okmulgee

When: May 22, 6:48 PM CST
Where: Okmulgee County, 5.77 mi WNW of Coalton
Measured: 0.88 in hail
Reported by: Law Enforcement
Coordinates: 35.520, -96.060

Tornado, Cherokee

When: May 22, 6:50 PM CST
Where: Cherokee County, 3.21 mi W of Scraper
Rating: EF0
Path length: 0.1 mi
Path width: 50 yd
Reported by: Storm Chaser
Coordinates: 36.098, -94.887

A brief tornado witnessed by storm chasers developed over open country. No known damage occurred as a result of the tornado.

Thunderstorm Wind, Muskogee

When: May 22, 6:56 PM CST
Where: Muskogee County, 1.18 mi SSE of Muskogee Davis Arpt
Measured: 52 kt (60 mph) measured gust
Reported by: ASOS
Coordinates: 35.656, -95.359

The ASOS at the Muskogee Davis Airport measured 60 mph thunderstorm wind gusts.

Tornado, Delaware

When: May 22, 7:13 PM CST to 7:25 PM CST
Where: Delaware County, 2.45 mi NW of Leach to 2.3 mi NNW of Twin Oaks
Rating: EF1
Path length: 4.7 mi
Path width: 400 yd
Property damage: $25,000
Reported by: NWS Storm Survey
Coordinates: 36.229, -94.945

A tornado damaged several homes and barns, and snapped or uprooted a number of large trees. Maximum estimated wind in the tornado based on this damage was about 105 mph. Several storm chasers, storm spotters, and citizens witnessed this tornado.

Tornado, Adair

When: May 22, 7:14 PM CST to 7:19 PM CST
Where: Adair County, 2.78 mi NNE of Chewey to 4.69 mi NNE of Chewey
Rating: EF1
Path length: 2 mi
Path width: 200 yd
Continued into: Delaware, Ok (TSA)
Reported by: NWS Storm Survey
Coordinates: 36.139, -94.757

This is the first of two segments of this tornado. In Adair County, this tornado uprooted large trees and snapped large tree limbs. Maximum estimated wind in the tornado based on this damage was about 95 mph. The tornado continued into Delaware County.

Tornado, Delaware

When: May 22, 7:19 PM CST to 7:27 PM CST
Where: Delaware County, 3.29 mi SW of Flint to 0.84 mi SSW of Flint
Rating: EF2
Path length: 2.5 mi
Path width: 200 yd
Property damage: $250,000
Reported by: NWS Storm Survey
Coordinates: 36.162, -94.735

This is the second of two segments of this tornado. In Delaware County, this tornado severely damaged several homes in the Fiddler's Bend area and snapped or uprooted many trees. Maximum estimated wind in the tornado based on this damage was about 115 mph. Several citizens witnessed this tornado.

Hail, Muskogee

When: May 22, 7:23 PM CST
Where: Muskogee County, Muskogee
Measured: 0.88 in hail
Reported by: Emergency Manager
Coordinates: 35.750, -95.370

Hail, Cherokee

When: May 22, 7:27 PM CST
Where: Cherokee County, Peggs
Measured: 1.75 in hail
Property damage: $25,000
Reported by: Trained Spotter
Coordinates: 36.080, -95.100

Tornado, Delaware

When: May 22, 7:29 PM CST to 7:30 PM CST
Where: Delaware County, 1.32 mi NNE of Twin Oaks to 2.02 mi NE of Twin Oaks
Rating: EF0
Path length: 1 mi
Path width: 100 yd
Reported by: Storm Chaser
Coordinates: 36.218, -94.843

A storm chaser witnessed a brief tornado over open country. No known damage occurred as a result of this tornado.

Tornado, Delaware

When: May 22, 7:30 PM CST to 7:37 PM CST
Where: Delaware County, 2.79 mi SW of Moseley to 0.17 mi E of Moseley
Rating: EF2
Path length: 2.9 mi
Path width: 350 yd
Injuries: 12 direct, 0 indirect
Property damage: $400,000
Reported by: NWS Storm Survey
Coordinates: 36.170, -94.664

A tornado destroyed six mobile homes, injuring twelve people, and rolled several vehicles. A number of large trees were snapped or uprooted and a barn was destroyed by the tornado. Maximum estimated wind in the tornado based on this damage was about 125 mph.

Tornado, Delaware

When: May 22, 7:36 PM CST to 7:40 PM CST
Where: Delaware County, 1.18 mi SSW of Moseley to 0.95 mi E of Moseley
Rating: EF1
Path length: 1.7 mi
Path width: 150 yd
Reported by: NWS Storm Survey
Coordinates: 36.184, -94.639

A tornado snapped or uprooted a number of large trees. Maximum estimated wind in the tornado based on this damage was about 105 mph.

Thunderstorm Wind, Mayes

When: May 22, 7:42 PM CST
Where: Mayes County, 2 mi E of Locust Grove
Measured: 52 kt (60 mph) estimated gust
Reported by: Amateur Radio
Coordinates: 36.200, -95.134

An amateur radio operator estimated 60 mph thunderstorm wind gusts.

Tornado, Delaware

When: May 22, 7:44 PM CST to 7:45 PM CST
Where: Delaware County, 2.06 mi NNE of West Siloam Spgs to 2.56 mi NNE of West Siloam Spgs
Rating: EF1
Path length: 0.5 mi
Path width: 100 yd
Reported by: NWS Storm Survey
Coordinates: 36.197, -94.586

A tornado snapped or uprooted large trees. Maximum estimated wind in the tornado based on this damage was about 100 mph.

Hail, Pittsburg

When: May 22, 8:12 PM CST
Where: Pittsburg County, Mc Alester
Measured: 0.88 in hail
Reported by: Public
Coordinates: 34.930, -95.770

Thunderstorm Wind, Le Flore

When: May 22, 8:52 PM CST
Where: Le Flore County, 1.89 mi NW of Summerfield
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 34.898, -94.876

Emergency management personnel estimated 70 mph thunderstorm wind gusts. Large tree limbs were blown down.

Hail, Tulsa

When: May 22, 9:32 PM CST
Where: Tulsa County, 3.2 mi S of Tulsa
Measured: 1 in hail
Reported by: Public
Coordinates: 36.104, -95.940

Hail, Tulsa

When: May 22, 9:35 PM CST
Where: Tulsa County, 1.92 mi W of Alsuma
Measured: 1.25 in hail
Reported by: Public
Coordinates: 36.104, -95.904

Hail, Tulsa

When: May 22, 9:45 PM CST
Where: Tulsa County, 2.91 mi W of Alsuma
Measured: 1.5 in hail
Reported by: Public
Coordinates: 36.104, -95.922

Hail, Rogers

When: May 22, 9:45 PM CST
Where: Rogers County, 2 mi SE of Catoosa
Measured: 2 in hail
Property damage: $15,000
Reported by: NWS Employee
Coordinates: 36.160, -95.725

Hail, Tulsa

When: May 22, 9:46 PM CST
Where: Tulsa County, 2.3 mi SW of Garnett
Measured: 2 in hail
Property damage: $25,000
Reported by: NWS Employee
Coordinates: 36.149, -95.862

Thunderstorm Wind, Le Flore

When: May 22, 9:55 PM CST
Where: Le Flore County, Poteau
Measured: 61 kt (70 mph) estimated gust
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 35.050, -94.620

Strong thunderstorm wind blew down trees and power lines across the county.

Thunderstorm Wind, Le Flore

When: May 22, 9:58 PM CST
Where: Le Flore County, 0.91 mi ENE of Cameron
Measured: 61 kt (70 mph) estimated gust
Property damage: $5,000
Reported by: Emergency Manager
Coordinates: 35.136, -94.535

Emergency management personnel estimated 70 mph thunderstorm wind gusts with trees and power lines blown down.

Hail, Rogers

When: May 22, 10:05 PM CST
Where: Rogers County, 1 mi SSW of Catoosa
Measured: 1.75 in hail
Property damage: $25,000
Reported by: Trained Spotter
Coordinates: 36.167, -95.757

Hail, Rogers

When: May 22, 10:53 PM CST
Where: Rogers County, 1 mi NNE of Verdigris
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 36.243, -95.673

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
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.

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 The tornado archive for Oklahoma, 2011 Warnings in Oklahoma, May 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: 310309, 310310, 310312, 310313, 310045, 310047, 310331, 310314, 310315, 310316, 310317, 310052, 310320, 310322, 310323, 310600, 310325, 310055, 310058, 310059, 310327, 310329, 310057, 310271, 310282, 310330, 310297, 310332, 310333, 310334, 310336, 310337, 310338, 310341, 310342, 310344, 310345, 310346.