Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 345, NWS Tulsa, OK

May 23, 2011Craig County, Nowata County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 23, 2011, 2:08 PM CDT for Craig County, Nowata County, Oklahoma. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 23, 2011, 2:08 PM CDT (19:08 UTC)
Expired: May 23, 2011, 2:57 PM CDT
In force: 49 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Craig County, OK, Nowata County, OK

The radar

The Tulsa radar (KINX), 88 km from the middle of the area, began a volume at 19:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 7.1 hours before the alert went out and 125 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1041 J/kg
Mixed-layer CIN: -257 J/kg
Mixed-layer LCL: 1640 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 247 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

973 
WUUS54 KTSA 231908
SVRTSA
OKC035-105-232015-
/O.NEW.KTSA.SV.W.0345.110523T1908Z-110523T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
208 PM CDT MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NOWATA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 315 PM CDT

* AT 205 PM CDT...A LARGE SEVERE THUNDERSTORM WAS LOCATED JUST 
NORTHWEST OF NOWATA...MOVING NORTHEAST AT 40 MPH.

  STORM HAZARDS INCLUDE...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  DELAWARE...LENAPAH AND WELCH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3700 9501 3699 9503 3697 9504 3695 9500
      3686 9500 3662 9570 3678 9580 3701 9530
TIME...MOT...LOC 1908Z 243DEG 36KT 3674 9565

$$

3 follow-up statements

692 
WWUS54 KTSA 231926
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
226 PM CDT MON MAY 23 2011

OKC035-105-232015-
/O.CON.KTSA.SV.W.0345.000000T0000Z-110523T2015Z/
CRAIG OK-NOWATA OK-
226 PM CDT MON MAY 23 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
EASTERN NOWATA AND NORTHERN CRAIG COUNTIES...

AT 223 PM CDT...A LARGE SEVERE THUNDERSTORM WAS CENTERED 7 MILES 
NORTHWEST OF CENTRALIA...MOVING NORTHEAST AT 45 MPH. ANOTHER STRONG 
STORM WAS LOCATED NORTH OF WELCH NEAR THE KANSAS STATE LINE...ALSO 
MOVING NORTHEAST. 

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
CENTRALIA...CENTRAILIA...HOLLOW AND WELCH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3700 9501 3699 9503 3697 9504 3695 9500
      3686 9500 3670 9547 3689 9556 3701 9530
TIME...MOT...LOC 1925Z 237DEG 40KT 3686 9543

$$

589 
WWUS54 KTSA 231937
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
237 PM CDT MON MAY 23 2011

OKC105-231947-
/O.CAN.KTSA.SV.W.0345.000000T0000Z-110523T2015Z/
NOWATA OK-
237 PM CDT MON MAY 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NOWATA COUNTY IS
CANCELLED...

LAT...LON 3700 9505 3698 9503 3697 9504 3696 9502
      3693 9500 3682 9542 3696 9541 3701 9531
TIME...MOT...LOC 1937Z 231DEG 47KT 3699 9527

$$

OKC035-232015-
/O.CON.KTSA.SV.W.0345.000000T0000Z-110523T2015Z/
CRAIG OK-
237 PM CDT MON MAY 23 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
NORTHERN CRAIG COUNTY...

AT 232 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HOLLOW...
MOVING NORTHEAST AT 50 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...

THE WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3700 9505 3698 9503 3697 9504 3696 9502
      3693 9500 3682 9542 3696 9541 3701 9531
TIME...MOT...LOC 1937Z 231DEG 42KT 3699 9527

$$

163 
WWUS54 KTSA 231957
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
257 PM CDT MON MAY 23 2011

OKC035-232007-
/O.CAN.KTSA.SV.W.0345.000000T0000Z-110523T2015Z/
CRAIG OK-
257 PM CDT MON MAY 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CRAIG COUNTY IS
CANCELLED...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA AND WEAKENED BELOW
SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

LAT...LON 3700 9505 3698 9503 3697 9504 3696 9502
      3693 9500 3682 9542 3696 9541 3701 9531
TIME...MOT...LOC 1957Z 231DEG 42KT 3714 9504

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at May 23, 12:12 PM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, May 23, 12:12 PM CDT, 1 hour 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1212 PM CDT MON MAY 23 2011

.DISCUSSION...
CONTINUED THUNDERSTORM CHANCES WILL RESULT IN PERIODS OF MVFR
CIGS...BRIEF IFR CIGS AND MVFR/IFR VSBYS AS THE WEATHER PATTERN
WILL REMAIN UNSETTLED FOR ALL OF THE AREA THIS TAF PERIOD.

&&

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

SHORT TERM...23
LONG TERM....18

Hazardous weather outlook, May 23, 12:58 PM CDT, 1 hour 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
1258 PM CDT MON MAY 23 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-241000-
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-
1258 PM CDT MON MAY 23 2011

..FLASH FLOODING IS ONGOING ACROSS PARTS OF EASTERN OKLAHOMA AND
  NORTHWEST ARKANSAS THIS AFTERNOON...

 SEVERE STORMS AGAIN LATER TODAY...INCLUDING THE POTENTIAL FOR VERY LARGE
  HAIL... AND ISOLATED TORNADO POTENTIAL...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

TORNADO.
	RISK...ELEVATED.
	AREA....NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
 	ONSET...AFTER 4 PM.

SEVERE THUNDERSTORM.
	RISK...SIGNIFICANT.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...THIS AFTERNOON

FLASH FLOOD.
	RISK...SIGNIFICANT.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.

HEAVY RAIN.
	RISK...SIGNIFICANT.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.

SIGNIFICANT WINDS.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA.
	ONSET...ONGOING

DISCUSSION...
TRAINING CONVECTION REMAINS ACROSS FAR NORTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS THIS AFTERNOON...AN HAS RESULTED IN FLASH
FLOODING IN THOSE AREAS.

LATER THIS AFTERNOON...AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE
REGION...THIS SYSTEM WILL INTERACT WITH THE MOIST AND VERY UNSTABLE
CONDITIONS IN PLACE. AREAL COVERAGE OF STRONG TO SEVERE THUNDERSTORMS
IS EXPECTED TO INCREASE FURTHER WEST...CLOSER THE MAIN SYNOPTIC
BOUNDARY. HOWEVER...OUTFLOW BOUNDARIES LAID DOWN BY PREVIOUS
CONVECTION WILL ALSO AID AS A TRIGGER AS WELL. LOCALLY BACKED
SURFACE FLOW IN THE VICINITY OF THE OUTFLOW BOUNDARIES MAY BE
SUFFICIENT TO PRODUCE TORNADIC STORMS IN ADDITION TO LARGE HAIL.

ADDITIONAL FLOODING WILL REMAIN A HIGH CONCERN OVERNIGHT...ESPECIALLY
NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AS LATER ROUNDS OF
THUNDERSTORMS ARE EXPECTED TO TRAVERSE THE ALREADY SATURATED OR
FLOODED AREAS.

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

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
TUESDAY AND WEDNESDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND
                        POTENTIAL.
THURSDAY THROUGH SUNDAY...NO HAZARDS.

EXTENDED DISCUSSION...
A HIGH END SEVERE EVENT IS IN THE WORKS FOR TUESDAY AS STRONG
SHORTWAVE ENERGY IS POISED TO DIVE INTO THE GREAT BASIN BY
TONIGHT...AND THEN EJECT NORTHEAST ACROSS THE SOUTHERN PLAINS ON
TUESDAY...WITH THE UPPER TROUGH TAKING ON A NEGATIVE TILT AS THIS
ENERGY ROUNDS THE BASE OF THE PARENT TROUGH. THE LIFT FROM THIS
SYSTEM WILL BE OPTIMALLY TIMED FOR PEAK HEATING ALONG THE
DRYLINE...WHICH WILL SET UP OVER CENTRAL OKLAHOMA TUESDAY
AFTERNOON. THUNDERSTORMS ARE EXPECTED TO RAPIDLY DEVELOP AND
BECOME SEVERE...WITH PLENTY OF INSTABILITY AND SHEAR AVAILABLE TO
PRODUCE ORGANIZED...ROTATING STORMS. VERY LARGE HAIL...DAMAGING
WINDS...AND TORNADOES...SOME STRONG...WILL BE POSSIBLE WITH THESE
STORMS AS THEY MOVE EAST INTO EASTERN OKLAHOMA AND NORTHWEST
ARKANSAS TUESDAY EVENING.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
EMERGENCY MANAGERS WILL NEED TO PAY CLOSE ATTENTION TO THE WEATHER
OVER THE NEXT COUPLE OF DAYS....ESPECIALLY TUESDAY WHERE THE
HIGHEST POTENTIAL FOR SIGNIFICANT SEVERE WEATHER EXISTS.

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

In the hours before

Special weather statement, May 23, 12:15 PM CDT, 1 hour 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1215 PM CDT MON MAY 23 2011

OKZ069-231745-
ADAIR OK-
1215 PM CDT MON MAY 23 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1245 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHEAST OKLAHOMA
     CENTRAL AND NORTHERN ADAIR

AT 1215 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
PROCTOR...MOVING NORTHEAST AT 20 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...BARON...CHRISTIE AND PROCTOR.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT
WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3596 9455 3584 9476 3587 9481 3589 9481
      3606 9474
TIME...MOT...LOC 1715Z 217DEG 19KT 3588 9478

Local storm report, May 23, 12:26 PM CDT, 1 hour 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
1226 PM CDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0952 PM     TSTM WND GST     SUMMERFIELD             34.90N 94.87W
05/22/2011  E70 MPH          LE FLORE           OK   EMERGENCY MNGR

&&

MEP

Local storm report, May 23, 12:46 PM CDT, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1246 PM CDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1040 AM     FLASH FLOOD      2 E LENAPAH             36.85N 95.60W
05/23/2011                   NOWATA             OK   FIRE DEPT/RESCUE

            HIGHWAY 10 CLOSED JUST EAST OF LENAPAH DUE TO HIGH WATER.
            WATER CONTINUING AT 11 AM.

1110 AM     FLASH FLOOD      10 E NOWATA             36.70N 95.46W
05/23/2011                   NOWATA             OK   PUBLIC

            COUNTY ROAD NORTH OF HWY 60 ALONG THE NOWATA AND CRAIG
            COUNTY LINE WAS FLOODED AND IMPASSABLE.

1125 AM     FLASH FLOOD      CENTRALIA               36.80N 95.33W
05/23/2011                   CRAIG              OK   PUBLIC

            WATER STARTING TO FLOOD SOME ROADS IN THE AREA.

1130 AM     FLASH FLOOD      8 N VINITA              36.75N 95.15W
05/23/2011                   CRAIG              OK   EMERGENCY MNGR

            WATER RISING OUT OF DITCHES AND OVER THE COUNTY ROADS.
            AREAS INCLUDE THOSE AROUND BLEW JACKET AND PYRAMID
            CORNERS.

&&

SAA

Local storm report, May 23, 12:59 PM CDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1259 PM CDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1250 PM     FLASH FLOOD      WELCH                   36.87N 95.10W
05/23/2011                   CRAIG              OK   EMERGENCY MNGR

            HIGHWAY 10 EAST OF WELCH CLOSED IN SEVERAL PLACES.

1250 PM     FLASH FLOOD      5 N VINITA              36.71N 95.15W
05/23/2011                   CRAIG              OK   EMERGENCY MNGR

            WATER OVER HIGHWAY 2 IN SEVERAL PLACES....GOING NORTH
            TOWARD PYRAMID CORNERS.

1250 PM     FLASH FLOOD      5 E PYRAMID CORNERS     36.80N 95.05W
05/23/2011                   CRAIG              OK   EMERGENCY MNGR

            HIGHWAY 25 GOING EAST FROM PYRAMID CORNERS THROUGH
            BLUEJACKET CLOSED IN SEVERAL PLACES...NEARLY TO HIGHWAY
            69.

&&

SAA

Special weather statement, May 23, 1:03 PM CDT, 1 hour 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
103 PM CDT MON MAY 23 2011

ARZ010-231830-
WASHINGTON AR-
103 PM CDT MON MAY 23 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 130 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHWEST ARKANSAS
     NORTHERN WASHINGTON

AT 102 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 3 MILES NORTHEAST OF FAYETTEVILLE TO 2 MILES SOUTHWEST
OF VINEY GROVE...MOVING NORTHEAST AT 25 MPH. SOME LOCATIONS THAT WILL
BE AFFECTED BY THESE STORMS INCLUDE...SHADY GROVE...WALNUT GROVE...
FAYETTEVILLE...SPRINGDALE...FARMINGTON...VINEY GROVE...WHEELER...
JOHNSON...SONORA...TONTITOWN AND OAK GROVE.

NICKEL SIZE HAIL WAS REPORTED AT 1252 PM WITH THIS LINE OF STORMS.

THESE STORMS WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3604 9408 3594 9444 3620 9422 3620 9394
TIME...MOT...LOC 1802Z 230DEG 22KT 3611 9410 3600 9433

Local storm report, May 23, 1:56 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
156 PM CDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0156 PM     HAIL             QUAPAW                  36.95N 94.79W
05/23/2011  E1.00 INCH       OTTAWA             OK   POST OFFICE

            MOSTLY DIME SIZED BUT A FEW AS BIG AS A QUARTER.

&&

KAH

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 7:00 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee	45 min
May 22, 7:13 PM CDT	Tornado Warning	TSA	Adair, Cherokee, Delaware, Mayes	62 min
May 22, 7:26 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	49 min
May 22, 7:38 PM CDT	Areal Flood Advisory	TSA	Delaware, Ottawa	112 min
May 22, 7:39 PM CDT	Flash Flood Warning	TSA	Delaware	4 hr
May 22, 7:39 PM CDT	Tornado Warning	TSA	Delaware, Ottawa	36 min
May 22, 7:46 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	29 min
May 22, 7:51 PM CDT	Areal Flood Advisory	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	84 min
May 22, 7:53 PM CDT	Special Weather Statement	TSA	Cherokee	37 min
May 22, 8:09 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	66 min
May 22, 8:09 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Wagoner	51 min
May 22, 8:16 PM CDT	Tornado Warning	TSA	Adair, Cherokee, Delaware	29 min
May 22, 8:19 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Wagoner	30 min
May 22, 8:20 PM CDT	Tornado Warning	TSA	Delaware	55 min
May 22, 8:32 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	43 min
May 22, 8:41 PM CDT	Special Weather Statement	TSA	Choctaw	34 min
May 22, 8:45 PM CDT	Tornado Warning	TSA	Delaware	45 min
May 22, 9:01 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	44 min
May 22, 9:15 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa, Rogers	60 min
May 22, 9:29 PM CDT	Special Weather Statement	TSA	Latimer	31 min
May 22, 9:35 PM CDT	Special Weather Statement	TSA	LeFlore	25 min
May 22, 9:38 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pittsburg	30 min
May 22, 10:12 PM CDT	Special Weather Statement	TSA	Creek, Tulsa	33 min
May 22, 10:14 PM CDT	Special Weather Statement	TSA	Delaware	31 min
May 22, 10:30 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	45 min
May 22, 10:37 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Rogers, Tulsa	22 min
May 22, 10:39 PM CDT	Special Weather Statement	TSA	Delaware	36 min
May 22, 10:50 PM CDT	Severe Thunderstorm Warning	TSA	Adair, LeFlore, Sequoyah	40 min
May 22, 10:55 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	35 min
May 22, 11:01 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	59 min
May 22, 11:01 PM CDT	Tornado Warning	TSA	Delaware	29 min
May 22, 11:10 PM CDT	Flash Flood Warning	TSA	Delaware	6 hr
May 22, 11:12 PM CDT	Special Weather Statement	TSA	Mayes, Rogers	33 min
May 23, 5:07 AM CDT	Areal Flood Warning	TSA	Delaware	4 hr
May 23, 5:42 AM CDT	Special Weather Statement	TSA	Osage	33 min
May 23, 5:49 AM CDT	Severe Thunderstorm Warning	TSA	Osage	26 min
May 23, 6:20 AM CDT	Severe Thunderstorm Warning	TSA	Osage	25 min
May 23, 6:50 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	25 min
May 23, 7:12 AM CDT	Special Weather Statement	TSA	Osage	33 min
May 23, 7:16 AM CDT	Special Weather Statement	TSA	Nowata	29 min
May 23, 7:25 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	50 min
May 23, 7:38 AM CDT	Special Weather Statement	TSA	Washington	37 min
May 23, 7:53 AM CDT	Special Weather Statement	TSA	Washington	37 min
May 23, 8:06 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	39 min
May 23, 8:16 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	44 min
May 23, 8:48 AM CDT	Special Weather Statement	TSA	Pushmataha	27 min
May 23, 8:49 AM CDT	Special Weather Statement	TSA	Nowata	26 min
May 23, 8:57 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	33 min
May 23, 9:01 AM CDT	Special Weather Statement	TSA	Pushmataha	44 min
May 23, 9:11 AM CDT	Special Weather Statement	TSA	Pushmataha	34 min
May 23, 9:15 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Nowata, Ottawa	2 hr
May 23, 9:26 AM CDT	Special Weather Statement	TSA	Craig	34 min
May 23, 9:29 AM CDT	Special Weather Statement	TSA	Ottawa	31 min
May 23, 9:36 AM CDT	Special Weather Statement	TSA	Choctaw	39 min
May 23, 9:56 AM CDT	Flash Flood Warning	TSA	Craig, Delaware, Nowata, Ottawa	4 hr
May 23, 10:00 AM CDT	Special Weather Statement	TSA	Craig	30 min
May 23, 10:31 AM CDT	Special Weather Statement	TSA	Craig	29 min
May 23, 10:45 AM CDT	Areal Flood Warning	TSA	Nowata	6 hr
May 23, 11:31 AM CDT	Special Weather Statement	TSA	Craig	29 min
May 23, 11:58 AM CDT	Special Weather Statement	TSA	Craig	32 min
May 23, 12:15 PM CDT	Special Weather Statement	TSA	Adair	30 min
May 23, 1:38 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Nowata, Ottawa, Rogers	6 hr
May 23, 1:40 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	35 min
May 23, 2:10 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	35 min
May 23, 2:32 PM CDT	River Flood Warning	TSA	Ottawa	42 hr
May 23, 2:37 PM CDT	River Flood Warning	TSA	Adair	60 hr
May 23, 2:37 PM CDT	River Flood Warning	TSA	Cherokee	3 days
May 23, 2:41 PM CDT	River Flood Advisory	TSA	Cherokee, Delaware	54 hr
May 23, 3:20 PM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 14 more	34 hr
May 23, 4:24 PM CDT	Areal Flood Warning	TSA	Nowata	6 hr
May 23, 4:52 PM CDT	Severe Thunderstorm Warning	TSA	Osage	53 min
May 23, 5:06 PM CDT	Tornado Warning	TSA	Osage	24 min
May 23, 5:29 PM CDT	Tornado Warning	TSA	Osage, Pawnee	31 min
May 23, 5:41 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	32 min
May 23, 5:55 PM CDT	Tornado Warning	TSA	Osage, Pawnee	50 min
May 23, 6:47 PM CDT	Areal Flood Advisory	TSA	Washington	118 min
May 23, 6:59 PM CDT	Special Weather Statement	TSA	Delaware, Mayes, Wagoner	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.