Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 187, NWS Norman, OK

April 29, 20124 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 29, 2012, 12:38 AM CDT for 4 counties in 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: Apr 29, 2012, 12:38 AM CDT (05:38 UTC)
Expired: Apr 29, 2012, 1:27 AM CDT
In force: 49 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Garfield County, OK, Grant County, OK, Kay County, OK, Noble County, OK

The radar

The Vance AFB radar (KVNX), 64 km from the middle of the area, began a volume at 05:41 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
Apr 28, 6:33 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 5.6 hours before the alert went out and 11 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: 167 J/kg
Mixed-layer CIN: -203 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 228 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

419 
WUUS54 KOUN 290538
SVROUN

OKC047-053-071-103-290645-
/O.NEW.KOUN.SV.W.0187.120429T0538Z-120429T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1238 AM CDT SUN APR 29 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHEASTERN GARFIELD COUNTY IN  OKLAHOMA...
  GRANT COUNTY IN  OKLAHOMA...
  KAY COUNTY IN  OKLAHOMA...
  EXTREME NORTHWESTERN NOBLE COUNTY IN  OKLAHOMA...

* UNTIL 145 AM CDT

* AT 1236 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS 
  DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR 
  SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS 
  LOCATED NEAR BILLINGS...MOVING NORTH AT 35 MPH. 

* LOCATIONS IMPACTED INCLUDE...
  BLACKWELL...TONKAWA...LAMONT...BILLINGS...BRAMAN...HUNTER...
  DEER CREEK...
  NARDIN AND PECKHAM. 

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 203 AND 236.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3651 9732 3651 9769 3700 9763 3700 9709
TIME...MOT...LOC 0536Z 202DEG 32KT 3657 9752 

$$

MAXWELL

2 follow-up statements

279 
WWUS54 KOUN 290612
SVSOUN

SEVERE WEATHER STATEMENTNATIONAL WEATHER SERVICE NORMAN OK111 AM CDT 
SUN APR 29 2012

OKC129-290640-
/O.CAN.KOUN.SV.W.0190.000000T0000Z-120429T0630Z/
ROGER MILLS OK-
112 AM CDT SUN APR 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR ROGER MILLS COUNTY IS 
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAD WEAKENED...AND WAS NO 
LONGER SEVERE. THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER 
SMALL HAIL....GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH 
THIS THUNDERSTORM.

LAT...LON 3592 9992 3592 9984 3583 9963 3592 9947
      3593 9942 3559 9973 3559 9998 3588 10000
TIME...MOT...LOC 0611Z 214DEG 30KT 3565 9986 

$$

304 
WWUS54 KOUN 290627
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
127 AM CDT SUN APR 29 2012

OKC053-071-290655-
/O.CAN.KOUN.SV.W.0187.000000T0000Z-120429T0645Z/
KAY OK-GRANT OK-
127 AM CDT SUN APR 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR KAY AND EAST CENTRAL GRANT 
COUNTIES IS CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND WERE NO 
LONGER SEVERE. THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER 
SMALL HAIL....GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH 
THESE THUNDERSTORMS.

LAT...LON 3700 9709 3665 9726 3667 9767 3700 9763
TIME...MOT...LOC 0626Z 202DEG 32KT 3678 9763 

$$

MAXWELL

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 Apr 29, 12:36 AM CDT, 2 minutes earlier.

Area forecast discussion, Apr 29, 12:36 AM CDT, 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1236 AM CDT SUN APR 29 2012

.DISCUSSION...
THE AVIATION DISCUSSION FOR THE 06Z TAFS IS BELOW.

&&

.AVIATION...
GENERALLY EXPECT DETERIORATING CONDITIONS WITH WIDESPREAD MVFR/IFR
CONDITIONS DEVELOPING BY 12Z. THINK THE WORST CONDITIONS WILL BE
OVER NORTHERN OKLAHOMA. SOME IMPROVEMENT CAN BE EXPECTED AFTER
16Z.

SCT TSRA WILL CONTINUE THRU AT LEAST 12Z NORTH OF A KAXS TO KOUN
LINE. THIS LINE WILL MOVE NORTH THROUGH 12Z. IF STORMS DIRECTLY
AFFECT A GIVEN SITE...BRIEF GUSTY WINDS...HAIL...AND IFR/LIFR
CONDITIONS ARE POSSIBLE.

APPEARS MOST TSRA WILL BE OVER NORTHERN OKLAHOMA BY 12Z WITH
REDEVELOPMENT POSSIBLE AFTER 19Z ACROSS MUCH OF OKLAHOMA AND
POSSIBLY WESTERN NORTH TEXAS. PROB GROUPS ARE INCLUDED TO HANDLE
THIS POTENTIAL.

&&

.PREV DISCUSSION... /ISSUED 912 PM CDT SAT APR 28 2012/

UPDATE...
STORMS HAVE FINALLY BEGUN TO DEVELOP IN FA. SHOWERS AND
THUNDERSTORMS EXPECTED TO INCREASE OVERNIGHT AS THE LLJ
STRENGTHENS...ESPECIALLY ACROSS PARTS OF NORTHERN AND CENTRAL
OK... NORTH OF THE STATIONARY FRONT THAT WILL LIFT NORTH AS A WARM
FRONT OVERNIGHT. SOME OF THE STORMS COULD BECOME SEVERE PRODUCING
LARGE HAIL AND STRONG WIND GUSTS. HAVE MADE SOME ADJUSTMENTS TO
THE POPS/WX GRIDS AND TWEAKED HOURLY GRIDS TO SHOW CURRENT TRENDS.
WILL SEND UPDATES SHORTLY.

MAXWELL

PREV DISCUSSION... /ISSUED 237 PM CDT SAT APR 28 2012/

DISCUSSION...
EXPECT TO SEE CONVECTION DEVELOP LATE THIS AFTN ALONG WEAK SFC
BOUNDARY ACROSS SOUTHWEST INTO CENTRAL SECTIONS OF OKLAHOMA AND
WESTERN NORTH TEXAS. THIS WILL BE THE BEGINNING OF AN ACTIVE FEW
DAYS ACROSS THE AREA AS LONGWAVE TROUGH MOVES THROUGH THE CENTRAL
PART OF THE COUNTRY AND RESIDUAL BOUNDARIES ACT AS FOCI FOR
ADDITIONAL SHOWER AND THUNDERSTORM ACTIVITY.

FOR LATE TODAY INTO TONIGHT... ABUNDANT LOW LEVEL MOISTURE AND
COOLING MID LEVEL TEMPS WILL RESULT IN A VERY UNSTABLE AIRMASS.
THIS WILL COMBINE WITH ADEQUATE WIND FIELDS TO SUPPORT SEVERE
THUNDERSTORM DEVELOPMENT NEAR AND NORTH OF THE SFC BOUNDARY.
INITIALLY COULD SEE A SMALL WINDOW OF OPPORTUNITY FOR A TORNADO OR
TWO... HOWEVER AS WE MOVE INTO THE EVENING HOURS STORMS ARE
EXPECTED TO BECOME MORE ELEVATED AND POSE MAINLY A LARGE HAIL
THREAT. THERE WILL BE TRANSITION TO MORE OF A HEAVY RAIN THREAT
OVERNIGHT ACROSS NORTHERN HALF OF OKLAHOMA AS SFC/ELEVATED
BOUNDARY LIFTS BACK TO THE NORTH.

LIKELY WE WILL SEE ANOTHER ROUND OF STORMS DEVELOP SUNDAY AFTN
AND SUNDAY NIGHT AS ANOTHER MID LEVEL DISTURBANCE MOVES THROUGH
THE LONGER WAVE TROUGH. THIS IS EXPECTED TO MAINLY AFFECT NORTHERN
HALF OF OKLAHOMA... SEVERE WEATHER WILL REMAIN POSSIBLE... AGAIN
WITH MAINLY LARGE HAIL AND ADDITIONAL HEAVY RAIN POTENTIAL.

RAIN CHANCES BEGIN TO DECREASE AFTER MONDAY WITH WARM AND MUGGY
CONDITIONS EXPECTED THROUGH MUCH OF NEXT WEEK. HOWEVER... MODELS
DO KEEP DRYLINE LOCATION NEAR WESTERN BORDER OF OKLAHOMA DURING
AFTN HOURS AND WITH SOME FLOW IN MID LEVELS CAN NOT COMPLETELY
RULE OUT A STORM OR TWO DURING THE LATE AFTN HOURS THROUGH THE
WEEK. MODELS ARE SHOWING ANOTHER FRONT SLIDING SOUTH INTO THE AREA
BY LATTER PART OF THE WEEK WITH POSSIBLY ANOTHER CHANCE OF MORE
WIDESPREAD SHOWERS AND THUNDERSTORMS.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  63  81  67  83 /  60  30  30  10
HOBART OK         62  82  64  85 /  70  30  30  10
WICHITA FALLS TX  64  85  67  86 /  50  20  20  10
GAGE OK           58  84  60  90 /  70  30  30  10
PONCA CITY OK     63  77  67  81 /  70  30  40  20
DURANT OK         64  80  68  82 /  20  20  20  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

25/17/02

Hazardous weather outlook, Apr 28, 8:41 PM CDT, 3 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
841 PM CDT SAT APR 28 2012

OKZ004>048-050>052-TXZ083>090-291000-
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-
841 PM CDT SAT APR 28 2012

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

.DAY ONE...REST OF TONIGHT...

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

LOCATION...
THE SLIGHT RISK AREA INCLUDES ALL OF WESTERN NORTH TEXAS AND THAT
PORTION OF OKLAHOMA NORTHWEST OF A LINE FROM ARDMORE TO ADA TO
HOLDENVILLE.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE THROUGH EARLY
SUNDAY MORNING.

IMPACTS...
HAIL TO THE SIZE OF TENNIS BALLS AND WIND GUSTS TO 70 MPH. VERY
HEAVY RAIN WILL ALSO BE A CONCERN OVERNIGHT.

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

DISCUSSION...
A STATIONARY SURFACE FRONT EXTENDING ACROSS CENTRAL AND SOUTHWESTERN
OKLAHOMA THIS EVENING WILL BEGIN TO LIFT NORTH LATER TONIGHT. A CAP
IN PLACE OVER THE REGION HAS HAMPERED THUNDERSTORM DEVELOPMENT EARLY
THIS EVENING. HOWEVER... LIFT IS EXPECTED TO INCREASE DURING THE
LATTER HALF OF THE EVENING AND OVERNIGHT AS THE LOW LEVEL JET
STRENGTHENS. THIS WILL LEAD TO SCATTERED TO WIDESPREAD SHOWERS AND
THUNDERSTORMS... ESPECIALLY IN AREAS NORTH OF THE FRONT ACROSS PARTS
OF CENTRAL AND NORTHERN OKLAHOMA. THESE THUNDERSTORMS WILL LIKELY BE
ELEVATED. HOWEVER... ENOUGH INSTABILITY IS EXPECTED TO EXIST OVER
THE REGION FOR SOME OF THE STORMS TO BECOME STRONG TO SEVERE. LARGE
HAIL AND STRONG WIND GUSTS WILL BE THE MAIN CONCERNS WITH ANY SEVERE
STORM.

THE SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO SUNDAY
MORNING.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SUNDAY APR 29.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...50 PERCENT.

OTHER HAZARDOUS WEATHER...
VERY HEAVY RAIN AND TRAINING OF THUNDERSTORMS WILL BE POSSIBLE
OVERNIGHT INTO SUNDAY MORNING. THIS COULD LEAD TO FLOODING...
ESPECIALLY IN LOW-LYING AND FLOOD PRONE AREAS. THE BEST CHANCE
FOR LOCALIZED FLOODING WILL BE IN PARTS OF CENTRAL AND NORTHERN
OKLAHOMA.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL BE LIKELY AGAIN ON SUNDAY AND THE CHANCE OF
SEVERE THUNDERSTORMS WILL PERSIST. ALTHOUGH THE COVERAGE OF SHOWERS
AND STORMS WILL DECREASE ON MONDAY... THERE WILL AGAIN BE A RISK OF
SEVERE THUNDERSTORMS.

OTHER HAZARDOUS WEATHER...
WITH WIDESPREAD RAIN EXPECTED AND STORMS PRODUCING LOCALLY HEAVY
RAINFALL... SOME FLOODING WILL BE POSSIBLE SUNDAY AND MONDAY.

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

AUSTIN/MAXWELL

In the hours before

Special weather statement, Apr 28, 11:19 PM CDT, 1 hour 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1119 PM CDT SAT APR 28 2012

OKZ006-011-012-290445-
GARFIELD OK-MAJOR OK-ALFALFA OK-
1119 PM CDT SAT APR 28 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GARFIELD...
EASTERN MAJOR AND SOUTHEASTERN ALFALFA COUNTIES UNTIL 1145 PM CDT...

AT 1117 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR LAHOMA...
MOVING NORTHEAST AT 25 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...

LOCATIONS IMPACTED INCLUDE...
LAHOMA...RINGWOOD...KREMLIN...MENO...HILLSDALE...CARRIER AND NORTH
ENID.

LAT...LON 3652 9772 3627 9808 3631 9831 3660 9804
TIME...MOT...LOC 0417Z 216DEG 24KT 3635 9808

MAXWELL

Local storm report, Apr 28, 11:20 PM CDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1120 PM CDT SAT APR 28 2012

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

1115 PM     HAIL             5 N BETHANY             35.58N 97.64W
04/28/2012  E1.25 INCH       OKLAHOMA           OK   TRAINED SPOTTER

&&

FM

Local storm report, Apr 28, 11:42 PM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1142 PM CDT SAT APR 28 2012

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

1121 PM     HAIL             7 N BETHANY             35.61N 97.64W
04/28/2012  E1.00 INCH       OKLAHOMA           OK   PUBLIC

1126 PM     HAIL             6 WSW EDMOND            35.62N 97.58W
04/28/2012  E1.00 INCH       OKLAHOMA           OK   NWS EMPLOYEE

1132 PM     HAIL             4 ENE LAHOMA            36.41N 98.02W
04/28/2012  E1.00 INCH       GARFIELD           OK   EMERGENCY MNGR

&&

FM

Local storm report, Apr 29, 12:02 AM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1202 AM CDT SUN APR 29 2012

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

1158 PM     HAIL             3 ENE HILLSDALE         36.58N 97.94W
04/28/2012  E1.00 INCH       GARFIELD           OK   EMERGENCY MNGR

&&

FM

Local storm report, Apr 29, 12:10 AM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1210 AM CDT SUN APR 29 2012

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

1202 AM     HAIL             SAYRE                   35.30N 99.63W
04/29/2012  E1.00 INCH       BECKHAM            OK   EMERGENCY MNGR

&&

FM

Local storm report, Apr 29, 12:21 AM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1221 AM CDT SUN APR 29 2012

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

1219 AM     HAIL             DOUGLAS                 36.26N 97.67W
04/29/2012  E1.00 INCH       GARFIELD           OK   EMERGENCY MNGR

&&

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 8:42 PM CDT	Special Weather Statement	OUN	Custer	33 min
Apr 28, 9:14 PM CDT	Special Weather Statement	OUN	Canadian	31 min
Apr 28, 9:18 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer	42 min
Apr 28, 9:25 PM CDT	Special Weather Statement	OUN	Washita	35 min
Apr 28, 9:55 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	50 min
Apr 28, 10:11 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Washita	49 min
Apr 28, 10:19 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher, Major	41 min
Apr 28, 10:44 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	46 min
Apr 28, 10:53 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Garfield, Kingfisher, Major	52 min
Apr 28, 11:01 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	44 min
Apr 28, 11:04 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon	41 min
Apr 28, 11:19 PM CDT	Special Weather Statement	OUN	Garfield	26 min
Apr 28, 11:20 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	40 min
Apr 28, 11:22 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	53 min
Apr 28, 11:25 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	50 min
Apr 28, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	61 min
Apr 28, 11:41 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Payne	49 min
Apr 28, 11:42 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan, Noble, Payne	63 min
Apr 28, 11:46 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	44 min
Apr 28, 11:50 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Roger Mills, Washita	55 min
Apr 29, 12:12 AM CDT	Severe Thunderstorm Warning	OUN	Grant	63 min
Apr 29, 12:27 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Lincoln, Logan, Oklahoma, Pottawatomie	48 min
Apr 29, 12:30 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	60 min
Apr 29, 12:32 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	58 min
Apr 29, 12:40 AM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	37 min
Apr 29, 12:43 AM CDT	Severe Thunderstorm Warning	OUN	Noble	49 min
Apr 29, 12:45 AM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	27 min
Apr 29, 1:24 AM CDT	Special Weather Statement	OUN	Caddo	36 min
Apr 29, 1:26 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	33 min
Apr 29, 1:35 AM CDT	Special Weather Statement	OUN	Logan	25 min
Apr 29, 1:40 AM CDT	Special Weather Statement	OUN	Roger Mills	35 min
Apr 29, 1:43 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	62 min
Apr 29, 2:12 AM CDT	Special Weather Statement	OUN	Kingfisher	33 min
Apr 29, 2:32 AM CDT	Special Weather Statement	OUN	Roger Mills	28 min
Apr 29, 2:54 AM CDT	Special Weather Statement	OUN	Logan	36 min
Apr 29, 2:58 AM CDT	Special Weather Statement	OUN	Roger Mills	32 min
Apr 29, 3:24 AM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	66 min
Apr 29, 4:31 AM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Roger Mills	59 min
Apr 29, 4:43 AM CDT	Special Weather Statement	OUN	Beckham	32 min
Apr 29, 5:34 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey	56 min
Apr 29, 7:08 AM CDT	Special Weather Statement	OUN	Kingfisher	37 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012 Every severe thunderstorm warning in 2012

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.