Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 237, NWS Norman, OK

May 23, 2011Logan County, Oklahoma County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 23, 2011, 8:59 PM CDT for Logan County, Oklahoma County, Oklahoma. It was in force for 46 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, 8:59 PM CDT (01:59 UTC)
Expired: May 23, 2011, 9:45 PM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Logan County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 44 km from the middle of the area, began a volume at 02:00 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 23, 2:30 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.0 hours before the alert went out and 55 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: 2770 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 888 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 319 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 12.4

Open this sounding in Storm Lab

The text

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

956 
WUUS54 KOUN 240159
SVROUN
OKC083-109-240245-
/O.NEW.KOUN.SV.W.0237.110524T0159Z-110524T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
859 PM CDT MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN LOGAN COUNTY IN CENTRAL OKLAHOMA...
  OKLAHOMA COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 945 PM CDT

* AT 859 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 8 MILES SOUTH OF CEDAR VALLEY...MOVING SOUTHEAST AT 30
  MPH.

HAZARDS IN THE WARNING INCLUDE...
HAIL UP TO THE SIZE OF HALF DOLLARS...
WIND GUSTS TO 60 MPH...

* LOCATIONS IN THE WARNING INCLUDE ARCADIA...CEDAR VALLEY...DEL
  CITY...EDMOND...FOREST PARK...JONES...LAKE ALUMA...LUTHER...MIDWEST
  CITY...NAVINA...NICHOLS HILLS...NICOMA PARK...NORTHEASTERN OKLAHOMA
  CITY...SEWARD...SPENCER...THE VILLAGE AND TINKER AIR FORCE BASE.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 128 AND 155.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 154 AND 160.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 126 AND 149.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING.
MOVE IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF
A TORNADO IS SIGHTED.

&&

LAT...LON 3581 9714 3570 9714 3540 9738 3559 9767
      3582 9767 3587 9763
TIME...MOT...LOC 0159Z 299DEG 26KT 3574 9757

$$

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 6:06 PM CDT, 2 hours 53 minutes earlier.

Area forecast discussion, May 23, 6:06 PM CDT, 2 hours 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
606 PM CDT MON MAY 23 2011

.UPDATE...
0Z TAFS... SCATTERED THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS
THE AREA THIS EVENING. STRONG VARIABLE WINDS WILL BE POSSIBLE NEAR
THE THUNDERSTORMS. MVFR CEILINGS WILL BE POSSIBLE LATER OVERNIGHT
INTO TUESDAY AT SOME SITES. SCATTERED THUNDERSTORMS ARE EXPECTED
TO DEVELOP AGAIN TUESDAY AFTERNOON/EVENING.

&&

.PREV DISCUSSION... /ISSUED 332 PM CDT MON MAY 23 2011/

DISCUSSION...
A COMPLICATED SET OF SURFACE BOUNDARIES IS IN PLACE THIS AFTERNOON.
AN OUTFLOW BOUNDARY LEFT OVER FROM MORNING STORMS CLIPS THE
NORTHEAST CORNER OF THE CWA...A SURFACE TROUGH STRETCHES THROUGH
NORTHWEST OK...AND THIS SURFACE TROUGH CONNECTS TO A DRYLINE WHICH
EXTENDS THROUGH WESTERN OK AND INTO NORTHWEST TX. STORMS ARE SLOWLY
DEVELOPING AHEAD OF THE DRYLINE FROM AROUND CLINTON TO AROUND
GRANITE...AND FURTHER STORM DEVELOPMENT CAN BE EXPECTED INTO THE
LATE AFTERNOON AND EARLY EVENING. DISCRETE SUPERCELLS SHOULD BE
FAVORED...WITH A TENDENCY FOR STORM INTENSITY TO DECREASE AFTER DARK.

ANOTHER ROUND OF SEVERE THUNDERSTORMS IS EXPECTED ON TUESDAY
AFTERNOON. THE MID LEVEL CAP IS FORECAST TO STRENGTHEN TUESDAY
MORNING. HOWEVER...THE BASE OF A NEGATIVELY TILTED MID LEVEL TROUGH
WILL SWING INTO THE SOUTHERN PLAINS TUESDAY EVENING...PROVIDING
PLENTY OF LARGE SCALE LIFT WHICH SHOULD OVERCOME THE CAP BY LATE
AFTERNOON OR EARLY EVENING.

REGARDING FIRE WEATHER...A FIRE WEATHER WATCH HAS BEEN ISSUED FOR
PORTIONS OF FAR WESTERN OK FORECAST TO BE WEST OF THE DRYLINE
TUESDAY AFTERNOON. THE WATCH WILL NOT BE TAKEN FARTHER SOUTHWARD FOR
NOW AS GREEN VEGETATION HAS LIKELY BEGUN GROWING AS A RESULT OF
RECENT RAINS.

COOLER AIR WILL MOVE IN ON WEDNESDAY AS A CLOSED MID LEVEL LOW
PASSES TO THE NORTH OF THE CWA. CLOUDY SKIES AND POSSIBLY A FEW
LINGERING THUNDERSTORMS WILL BE POSSIBLE FROM NORTHERN INTO EASTERN
PORTIONS OF THE CWA...LIKELY REMAINING BELOW SEVERE LEVELS.

NO CHANGES TO THE FORECAST HAVE BEEN MADE FROM THURSDAY ONWARD.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  69  89  63  83 /  30  30  40  20
HOBART OK         68  93  57  86 /  20  20  30  10
WICHITA FALLS TX  69  95  61  88 /  20  30  20  10
GAGE OK           64  89  54  78 /  40  20  30  20
PONCA CITY OK     73  86  62  77 /  50  30  60  30
DURANT OK         68  85  68  85 /  30  20  30  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...FIRE WEATHER WATCH FROM TUESDAY AFTERNOON THROUGH TUESDAY
     EVENING FOR OKZ004-009-014-021.

TX...NONE.
&&

09/25

Hazardous weather outlook, May 23, 4:53 PM CDT, 4 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
453 PM CDT MON MAY 23 2011

OKZ004>048-050>052-TXZ083>090-241000-
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-
453 PM CDT MON MAY 23 2011

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

.DAY ONE...TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
CENTRAL AND WESTERN OKLAHOMA. THERE IS A SLIGHT RISK OF SEVERE
THUNDERSTORMS ACROSS MUCH OF THE REMAINDER OF OKLAHOMA AND WESTERN
NORTH TEXAS.

LOCATION...
THE MODERATE RISK IS EAST OF A WOODWARD TO ALTUS LINE...AND NORTH OF
A FREDERICK TO WAURIKA TO HOLDENVILLE LINE. THE SLIGHT RISK IS SOUTH
AND WEST OF THE MODERATE RISK ACROSS THE REMAINDER OF OKLAHOMA AND
WESTERN NORTH TEXAS.

IMPACTS...
DAMAGE TO HOMES...CARS AND VEGETATION POSSIBLE FROM HAIL  TO THE
SIZE OF BASEBALLS OR LARGER AND DAMAGING WIND GUSTS OVER 65 MPH.
ISOLATED TORNADOES WILL ALSO BE POSSIBLE THIS EVENING.

TIMING...
THE MOST LIKELY TIME FOR SEVERE WEATHER WILL BE THROUGH THIS EVENING.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS THROUGH THE
OVERNIGHT HOURS.

DISCUSSION...
A DRYLINE EXTENDED SOUTH ACROSS WESTERN OKLAHOMA WHILE A STATIONARY
FRONT AND OUTFLOW BOUNDARY EXTENDED ACROSS NORTHERN OKLAHOMA.
THUNDERSTORMS HAVE DEVELOPED ALONG THESE BOUNDARIES LATE THIS
AFTERNOON. THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE EAST
ACROSS PARTS OF OKLAHOMA AND NORTH TEXAS THIS EVENING. THE AIRMASS
IS VERY UNSTABLE AND IS SUPPORTING SEVERE THUNDERSTORMS. VERY LARGE
HAIL... DAMAGING WINDS... AND ISOLATED TORNADOES WILL BE POSSIBLE.
HEAVY RAIN AND FREQUENT CLOUD TO GROUND LIGHTNING WILL ALSO BE
LIKELY WITH THE THUNDERSTORMS.

THUNDERSTORMS ARE EXPECTED TO DECREASE LATE THIS EVENING.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY MAY 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...100 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
THERE IS A POTENTIAL FOR MORE WIDESPREAD AND SIGNIFICANT SEVERE
WEATHER ON TUESDAY. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS
EAST OF A LINE FROM WOODWARD... TO CLINTON AND FREDERICK OKLAHOMA...
TO VERNON AND SEYMOUR TEXAS. SEVERE STORMS ARE EXPECTED TO DEVELOP
BY AFTERNOON AS A STRONG UPPER SYSTEM LIFTS NORTHEASTWARD FROM THE
SOUTHERN ROCKIES AND INTERACTS WITH A STRENGTHENING DRYLINE PUSHING
INTO OKLAHOMA AND WESTERN NORTH TEXAS. VERY LARGE HAIL...DAMAGING
WINDS...AND TORNADOES WILL BE POSSIBLE. THUNDERSTORM CHANCES
CONTINUE WEDNESDAY AND WEDNESDAY NIGHT ALTHOUGH THE RISK OF SEVERE
WEATHER WILL LIKELY MOVE EAST OF THE AREA.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
TUESDAY.

MAXWELL

In the hours before

Local storm report, May 23, 8:17 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
817 PM CDT MON MAY 23 2011

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

0817 PM     HAIL             KINGFISHER              35.86N 97.93W
05/23/2011  E1.75 INCH       KINGFISHER         OK   LAW ENFORCEMENT

&&

JPIKE

Local storm report, May 23, 8:26 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
826 PM CDT MON MAY 23 2011

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

0822 PM     HAIL             2 E KINGFISHER          35.86N 97.90W
05/23/2011  E1.75 INCH       KINGFISHER         OK   PUBLIC

&&

JPIKE

Local storm report, May 23, 8:28 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
828 PM CDT MON MAY 23 2011

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

0825 PM     HAIL             5 E KINGFISHER          35.86N 97.84W
05/23/2011  E2.00 INCH       KINGFISHER         OK   PUBLIC

&&

JPIKE

Local storm report, May 23, 8:35 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
835 PM CDT MON MAY 23 2011

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

0831 PM     HAIL             3 E KINGFISHER          35.86N 97.88W
05/23/2011  E2.00 INCH       KINGFISHER         OK   PUBLIC

&&

JPIKE

Local storm report, May 23, 8:47 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
847 PM CDT MON MAY 23 2011

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

0640 PM     FLASH FLOOD      LAHOMA                  36.39N 98.09W
05/23/2011                   GARFIELD           OK   FIRE DEPT/RESCUE

            WATER OVERFLOWED THE STREETS AROUND TOWN

&&

JPIKE

Special weather statement, May 23, 8:48 PM CDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
848 PM CDT MON MAY 23 2011

OKZ024-025-240215-
CANADIAN OK-OKLAHOMA OK-
848 PM CDT MON MAY 23 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CANADIAN AND OKLAHOMA
COUNTIES.

AT 848 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 12 MILES NORTHEAST
OF PIEDMONT...MOVING EAST AT 35 MPH. STRONG WIND GUSTS FROM THIS
STORM MAY AFFECT PORTIONS OF NORTHERN OKLAHOMA AND CANADIAN
COUNTIES...INCLUDING THE PIEDMONT AND EDMOND AREAS.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH...
WIND GUSTS TO 50 MPH...

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

LAT...LON 3572 9763 3573 9727 3553 9728 3560 9780
      3573 9777 3573 9764

TAYLOR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:04 PM CDT	Special Weather Statement	OUN	Lincoln	26 min
May 23, 7:18 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher, Logan	57 min
May 23, 7:22 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Logan, Noble, Payne	53 min
May 23, 7:37 PM CDT	Areal Flood Advisory	OUN	Blaine, Garfield, Kingfisher, Logan, Major	3 hr
May 23, 7:44 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Garfield, Kingfisher, Major	31 min
May 23, 7:46 PM CDT	Special Weather Statement	OUN	Logan	14 min
May 23, 8:03 PM CDT	Special Weather Statement	OUN	Logan	27 min
May 23, 8:12 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey, Kingfisher, Logan, Major	63 min
May 23, 8:14 PM CDT	Special Weather Statement	OUN	Payne	31 min
May 23, 8:17 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma	43 min
May 23, 8:34 PM CDT	Areal Flood Advisory	OUN	Blaine, Canadian, Kingfisher, Logan, Oklahoma	116 min
May 23, 8:48 PM CDT	Special Weather Statement	OUN	Oklahoma	27 min
May 23, 9:12 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	48 min
May 23, 9:30 PM CDT	Special Weather Statement	OUN	Canadian	15 min
May 23, 9:43 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Canadian, Dewey, Kingfisher	62 min
May 23, 9:48 PM CDT	Special Weather Statement	OUN	Lincoln	27 min
May 23, 9:54 PM CDT	Special Weather Statement	OUN	Lincoln	51 min
May 23, 10:01 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	59 min
May 23, 10:03 PM CDT	Special Weather Statement	OUN	Logan, Oklahoma	27 min
May 23, 10:14 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	46 min
May 23, 10:44 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	31 min
May 23, 10:55 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	65 min
May 23, 11:01 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	29 min
May 23, 11:10 PM CDT	Areal Flood Advisory	OUN	Canadian, Kingfisher, Logan	3 hr
May 23, 11:17 PM CDT	Special Weather Statement	OUN	Logan	43 min
May 23, 11:26 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	37 min
May 24, 4:27 AM CDT	Red Flag Warning	OUN	Beckham, Ellis, Greer, Harmon, Harper, Jackson and 1 more	18 hr
May 24, 2:03 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	57 min
May 24, 2:16 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	59 min
May 24, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Washita	65 min
May 24, 2:42 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woods, Woodward	63 min
May 24, 3:00 PM CDT	Tornado Warning	OUN	Blaine, Dewey, Major, Woods	45 min
May 24, 3:06 PM CDT	Tornado Warning	OUN	Blaine, Caddo, Custer	39 min
May 24, 3:07 PM CDT	Tornado Warning	OUN	Caddo, Washita	53 min
May 24, 3:15 PM CDT	Wind Advisory	OUN	Beckham, Blaine, Caddo, Comanche, Cotton, Custer and 13 more	6 hr
May 24, 3:25 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	50 min
May 24, 3:40 PM CDT	Tornado Warning	OUN	Alfalfa, Major	42 min
May 24, 3:41 PM CDT	Tornado Warning	OUN	Blaine, Caddo, Canadian	49 min
May 24, 3:42 PM CDT	Tornado Warning	OUN	Blaine, Kingfisher, Major	48 min
May 24, 3:44 PM CDT	Special Weather Statement	OUN	Cleveland, Grady, Logan, Oklahoma	16 min
May 24, 3:49 PM CDT	Special Weather Statement	OUN	Caddo	11 min
May 24, 4:00 PM CDT	Tornado Warning	OUN	Canadian	45 min
May 24, 4:03 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche	42 min
May 24, 4:04 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	56 min
May 24, 4:09 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	51 min
May 24, 4:12 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Major	63 min
May 24, 4:28 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Stephens	32 min
May 24, 4:30 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Comanche, Grady	60 min
May 24, 4:35 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Lincoln, Logan, Noble, Payne	55 min
May 24, 4:40 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	35 min
May 24, 4:40 PM CDT	Tornado Warning	OUN	Canadian, Logan, Oklahoma	65 min
May 24, 4:42 PM CDT	Tornado Warning	OUN	Canadian, Grady, Oklahoma	63 min
May 24, 4:50 PM CDT	Tornado Warning	OUN	Caddo, Canadian, Grady	40 min
May 24, 4:56 PM CDT	Tornado Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	49 min
May 24, 5:00 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	45 min
May 24, 5:03 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	42 min
May 24, 5:10 PM CDT	Tornado Warning	OUN	Grady, McClain	50 min
May 24, 5:20 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, McClain, Stephens	25 min
May 24, 5:23 PM CDT	Tornado Warning	OUN	Cleveland, Grady, McClain	37 min
May 24, 5:26 PM CDT	Tornado Warning	OUN	Stephens	49 min
May 24, 5:27 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Lincoln, Logan, Noble, Payne	63 min
May 24, 5:29 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	31 min
May 24, 5:33 PM CDT	Tornado Warning	OUN	Logan, Noble, Payne	57 min
May 24, 5:45 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Pottawatomie	60 min
May 24, 5:46 PM CDT	Severe Thunderstorm Warning	OUN	Garvin	44 min
May 24, 5:48 PM CDT	Tornado Warning	OUN	Cleveland, McClain	42 min
May 24, 5:50 PM CDT	Severe Thunderstorm Warning	OUN	Love	40 min
May 24, 5:53 PM CDT	Tornado Warning	OUN	Love	52 min
May 24, 5:55 PM CDT	Tornado Warning	OUN	Cleveland, McClain, Oklahoma	50 min
May 24, 5:55 PM CDT	Tornado Warning	OUN	Carter, Garvin, Stephens	50 min
May 24, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	61 min
May 24, 6:21 PM CDT	Tornado Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	54 min
May 24, 6:23 PM CDT	Severe Thunderstorm Warning	OUN	Carter	52 min
May 24, 6:32 PM CDT	Tornado Warning	OUN	Carter, Johnston, Love, Marshall	28 min
May 24, 6:36 PM CDT	Tornado Warning	OUN	Pottawatomie, Seminole	39 min
May 24, 6:41 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma, Payne, Pottawatomie	57 min
May 24, 6:46 PM CDT	Severe Thunderstorm Warning	OUN	Love	35 min
May 24, 6:51 PM CDT	Tornado Warning	OUN	Johnston, Marshall	39 min
May 24, 6:54 PM CDT	Tornado Warning	OUN	Love	28 min
May 24, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Murray	33 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.