Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 324, NWS Tulsa, OK

May 22, 2011Craig County, Delaware County, Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 22, 2011, 8:32 PM CDT for Craig County, Delaware County, Ottawa County, Oklahoma. It was in force for 43 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 22, 2011, 8:32 PM CDT (01:32 UTC)
Expired: May 22, 2011, 9:15 PM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Craig County, OK, Delaware County, OK, Ottawa County, OK

The radar

The Tulsa radar (KINX), 84 km from the middle of the area, began a volume at 01:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 22, 1:27 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.5 hours before the alert went out and 95 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: 3961 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 641 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 3.7
Supercell composite: 15.9

Open this sounding in Storm Lab

The text

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

185 
WUUS54 KTSA 230132
SVRTSA
OKC035-041-115-230215-
/O.NEW.KTSA.SV.W.0324.110523T0132Z-110523T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
832 PM CDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  SOUTHERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 915 PM CDT

* AT 827 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 4 MILES NORTHWEST OF CLEORA TO 6 MILES EAST OF
  GROVE...MOVING NORTH AT 15 MPH.

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

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  VINITA...AFTON AND FAIRLAND.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 283 AND 302.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM
WINDOWS.

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

&&

LAT...LON 3651 9461 3650 9461 3652 9516 3678 9517
      3679 9461
TIME...MOT...LOC 0132Z 180DEG 14KT 3662 9504 3661 9466

$$

2 follow-up statements

985 
WWUS54 KTSA 230147
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
847 PM CDT SUN MAY 22 2011

OKC035-041-115-230215-
/O.CON.KTSA.SV.W.0324.000000T0000Z-110523T0215Z/
CRAIG OK-DELAWARE OK-OTTAWA OK-
847 PM CDT SUN MAY 22 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHERN OTTAWA...NORTHERN DELAWARE AND SOUTHEASTERN CRAIG
COUNTIES...

AT 845 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM VINITA TO GROVE...MOVING NORTH AT 15 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TIFF
CITY...AFTON AND FAIRLAND.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 283 AND 301.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

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

&&

LAT...LON 3651 9461 3650 9461 3652 9516 3678 9517
      3679 9461
TIME...MOT...LOC 0147Z 180DEG 14KT 3663 9506 3662 9468

$$

329 
WWUS54 KTSA 230202
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
902 PM CDT SUN MAY 22 2011

OKC035-041-115-230215-
/O.CON.KTSA.SV.W.0324.000000T0000Z-110523T0215Z/
CRAIG OK-DELAWARE OK-OTTAWA OK-
902 PM CDT SUN MAY 22 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHERN OTTAWA...NORTHERN DELAWARE AND SOUTHEASTERN CRAIG
COUNTIES...

AT 858 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM AFTON TO TIFF CITY...MOVING NORTH AT 15 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...AFTON AND
FAIRLAND.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 283 AND 301.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

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

&&

LAT...LON 3651 9461 3650 9461 3652 9516 3678 9517
      3679 9461
TIME...MOT...LOC 0202Z 180DEG 14KT 3669 9506 3668 9468

$$

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 22, 6:35 PM CDT, 1 hour 57 minutes earlier.

Area forecast discussion, May 22, 6:35 PM CDT, 1 hour 57 minutes before

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

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM.
SCATTERED STORMS MAY IMPACT SITES EAST OF INTERSTATE 44 THROUGH
LATE EVENING...WITH LOW CEILINGS AGAIN DEVELOPING BY EARLY
MORNING. POTENTIAL DOES EXIST FOR CONVECTION TO DEVELOP WEST OF
THE AREA AND DROP SOUTHWARD INTO NE OK AFTER SUNRISE
MONDAY...HOWEVER THERE IS CONSIDERABLE UNCERTAINTY IN THIS
SCENARIO. OUTSIDE OF CONVECTIVE CHANCES...MVFR CEILINGS WILL
PREVAIL THROUGH LATE MORNING WITH CEILINGS RISING AND THUNDERSTORM
CHANCES INCREASING MONDAY AFTERNOON.

&&

.PREV DISCUSSION... /ISSUED 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.
&&

AVIATION...07

Hazardous weather outlook, May 22, 5:04 PM CDT, 3 hours 28 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

Local storm report, May 22, 7:58 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
758 PM CDT SUN MAY 22 2011

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

0739 PM     HAIL             3 W SCRAPER             36.09N 94.90W
05/22/2011  E2.00 INCH       CHEROKEE           OK   TRAINED SPOTTER

&&

PBS

Local storm report, May 22, 7:59 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
759 PM CDT SUN MAY 22 2011

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

0742 PM     HAIL             PEGGS                   36.08N 95.10W
05/22/2011  E2.75 INCH       CHEROKEE           OK   PUBLIC

&&

PBS

Local storm report, May 22, 8:02 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
802 PM CDT SUN MAY 22 2011

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

0756 PM     TSTM WND GST     MUSKOGEE                35.75N 95.37W
05/22/2011  M60 MPH          MUSKOGEE           OK   OFFICIAL NWS OBS

&&

JBM

Local storm report, May 22, 8:13 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
813 PM CDT SUN MAY 22 2011

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

0813 PM     HAIL             BELLA VISTA             36.43N 94.23W
05/22/2011  E1.00 INCH       BENTON             AR   BROADCAST MEDIA

&&

JBM

Local storm report, May 22, 8:27 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
827 PM CDT SUN MAY 22 2011

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

0823 PM     HAIL             MUSKOGEE                35.75N 95.37W
05/22/2011  E0.88 INCH       MUSKOGEE           OK   EMERGENCY MNGR

&&

PBS

Local storm report, May 22, 8:29 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
829 PM CDT SUN MAY 22 2011

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

0827 PM     HAIL             PEGGS                   36.08N 95.10W
05/22/2011  E1.75 INCH       CHEROKEE           OK   TRAINED SPOTTER

&&

PBS

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, 8:41 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, 2:08 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	49 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.