Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 264, NWS Norman, OK

May 11, 2016Jefferson County, Stephens County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 11, 2016, 10:54 PM CDT for Jefferson County, Stephens County, Oklahoma. It was in force for 29 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 11, 2016, 10:54 PM CDT (03:54 UTC)
Expired: May 11, 2016, 11:23 PM CDT
In force: 29 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

Counties Jefferson County, OK, Stephens County, OK

The radar

The Altus AFB radar (KFDR), 99 km from the middle of the area, began a volume at 03:55 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 11, 10:13 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.9 hours before the alert went out and 117 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: 1887 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1366 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

As transmitted.

807 
WUUS54 KOUN 120354
SVROUN
OKC067-137-120445-
/O.NEW.KOUN.SV.W.0264.160512T0354Z-160512T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1054 PM CDT WED MAY 11 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN JEFFERSON COUNTY IN SOUTHERN OKLAHOMA...
  SOUTH CENTRAL STEPHENS COUNTY IN SOUTHERN OKLAHOMA...

* UNTIL 1145 PM CDT

* AT 1054 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ADDINGTON...
  MOVING NORTHEAST AT 5 MPH.

  HAZARD...TWO INCH HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
           DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
           WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WAURIKA...COMANCHE...ADDINGTON AND SOUTHEASTERN WAURIKA LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 3415 9797 3428 9808 3443 9786 3425 9766
TIME...MOT...LOC 0354Z 232DEG 5KT 3426 9792 

HAIL...2.00IN
WIND...60MPH
 
$$

WR

4 follow-up statements

542 
WWUS54 KOUN 120404
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1104 PM CDT WED MAY 11 2016

OKC067-137-120445-
/O.CON.KOUN.SV.W.0264.000000T0000Z-160512T0445Z/
JEFFERSON OK-STEPHENS OK-
1104 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTH CENTRAL JEFFERSON AND SOUTH CENTRAL STEPHENS COUNTIES...

AT 1104 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES EAST OF
ADDINGTON...MOVING EAST AT 10 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT WIND 
         DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH
CENTRAL JEFFERSON AND SOUTH CENTRAL STEPHENS COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3417 9791 3432 9798 3441 9784 3425 9766
TIME...MOT...LOC 0404Z 266DEG 10KT 3425 9785 

HAIL...1.50IN
WIND...60MPH
 
$$

WR

656 
WWUS54 KOUN 120414
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1114 PM CDT WED MAY 11 2016

OKC067-137-120445-
/O.CON.KOUN.SV.W.0264.000000T0000Z-160512T0445Z/
JEFFERSON OK-STEPHENS OK-
1114 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTH CENTRAL JEFFERSON AND SOUTH CENTRAL STEPHENS COUNTIES...

AT 1114 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTHWEST
OF LOCO...MOVING EAST AT 15 MPH.

HAZARD...HALF DOLLAR SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH
CENTRAL JEFFERSON AND SOUTH CENTRAL STEPHENS COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3417 9791 3432 9798 3441 9784 3425 9766
TIME...MOT...LOC 0414Z 276DEG 11KT 3423 9779 

HAIL...1.25IN
WIND...<50MPH
 
$$

WR

300 
WWUS54 KOUN 120415
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1115 PM CDT WED MAY 11 2016

OKC137-120425-
/O.CAN.KOUN.SV.W.0264.000000T0000Z-160512T0445Z/
STEPHENS OK-
1115 PM CDT WED MAY 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL STEPHENS COUNTY
IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENEDAND
MOVED OUT OF THE WARNED AREA.

LAT...LON 3419 9784 3427 9786 3429 9781 3425 9766
TIME...MOT...LOC 0415Z 275DEG 10KT 3422 9777 

$$

OKC067-120445-
/O.CON.KOUN.SV.W.0264.000000T0000Z-160512T0445Z/
JEFFERSON OK-
1115 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTH CENTRAL JEFFERSON COUNTY...

AT 1115 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTHWEST
OF LOCO...MOVING EAST AT 10 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH
CENTRAL JEFFERSON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3419 9784 3427 9786 3429 9781 3425 9766
TIME...MOT...LOC 0415Z 275DEG 10KT 3422 9777 

HAIL...1.00IN
WIND...<50MPH
 
$$

WR

462 
WWUS54 KOUN 120423
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1123 PM CDT WED MAY 11 2016

OKC067-120433-
/O.CAN.KOUN.SV.W.0264.000000T0000Z-160512T0445Z/
JEFFERSON OK-
1123 PM CDT WED MAY 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL JEFFERSON COUNTY
IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3419 9784 3427 9786 3429 9781 3425 9766
TIME...MOT...LOC 0420Z 232DEG 5KT 3423 9776 

$$

WR

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 11, 9:22 PM CDT, 1 hour 32 minutes earlier.

Area forecast discussion, May 11, 9:22 PM CDT, 1 hour 32 minutes before

Area Forecast Discussion
National Weather Service Norman OK
922 PM CDT WED MAY 11 2016

.DISCUSSION...
pops were increased a bit northward across central oklahoma where
thunderstorms are expected tonight along and north of a surface
cold front. these may produce large hail as they drift slowly
south and east through the early morning.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  85  58  76  53 /  20  60  20   0
Hobart OK         82  58  77  53 /  10  60  40   0
Wichita Falls TX  87  60  77  56 /  40  80  50  10
Gage OK           77  53  77  52 /  10  30  10   0
Ponca City OK     80  55  77  53 /  20  20  10   0
Durant OK         85  65  76  57 /  30  80  50  10

&&

.OUN Watches/Warnings/Advisories...
OK...None.
TX...None.
&&

09/23

Hazardous weather outlook, May 11, 8:39 PM CDT, 2 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
839 PM CDT WED MAY 11 2016

OKZ004>048-050>052-TXZ083>090-130145-
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-
839 PM CDT WED MAY 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...TONIGHT...

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

LOCATION...
THE SLIGHT RISK AREA COVERS LOCATIONS SOUTH OF A LINE EXTENDING
FROM CROWELL AND VERNON TEXAS...TO OKLAHOMA CITY AND CHANDLER IN
OKLAHOMA. A MARGINAL RISK SURROUNDS THE SLIGHT RISK AREA AND
EXTENDS FROM ELK CITY...TO EL RENO...AND STILLWATER IN OKLAHOMA.

TIMING...
THE MOST LIKELY TIME FOR SEVERE STORM DEVELOPMENT WILL BE AFTER 9 PM
AND CONTINUE THROUGH 3 AM.

IMPACTS...
DAMAGING HAIL UP TO TENNIS BALL SIZE IN DIAMETER WILL BE POSSIBLE
ALONG WITH DAMAGING WIND GUSTS BETWEEN 60 AND 70 MPH. LOCALLY
HEAVY RAINFALL MAY ALSO LEAD TO FLASH FLOODING. THE TORNADO
POTENTIAL IS VERY LOW.

DISCUSSION...
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO RAPIDLY DEVELOP WITH
APPROACH OF AN UPPER LEVEL WAVE THIS EVENING. THESE THUNDERSTORMS
ARE EXPECTED TO DEVELOP IN THE VICINITY OF A COLD FRONT THAT IS
LOCATED NEAR THE INTERSTATE-44 CORRIDOR.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
THE RISK AREAS SHOULD BE PREPARED FOR SEVERE WEATHER OPERATIONS
THIS EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

.THUNDERSTORMS...
ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS WILL BEGIN FRIDAY
NIGHT AND CONTINUE THROUGH THE WEEKEND AS ANOTHER UPPER LEVEL
DISTURBANCE APPROACHES AND MOVES INTO THE REGION. A THIRD ROUND
OF THUNDERSTORMS MAY DEVELOP EARLY NEXT WEEK... MONDAY INTO
TUESDAY... AS A STRONGER SYSTEM APPROACHES THE REGION. ORGANIZED
STORMS MAY FORM ON A FRONTAL BOUNDARY LEADING TO A CHANCE OF
STRONG TO SEVERE STORMS.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

KURTZ/11/MAHALE

In the hours before

Special weather statement, May 11, 10:10 PM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1010 PM CDT WED MAY 11 2016

OKZ039-120345-
STEPHENS OK-
1010 PM CDT WED MAY 11 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN STEPHENS COUNTY UNTIL
1045 PM CDT...

AT 1009 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTH OF
ADDINGTON...MOVING NORTHEAST AT 25 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 40 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3434 9809 3457 9776 3434 9757 3429 9786
      3429 9799
TIME...MOT...LOC 0309Z 236DEG 23KT 3430 9796

WR

Local storm report, May 11, 10:27 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1027 PM CDT WED MAY 11 2016

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

1025 PM     HAIL             COMANCHE                34.37N 97.97W
05/11/2016  E1.00 INCH       STEPHENS           OK   BROADCAST MEDIA

            RELAYED BY KSWO-TV.

&&

MAHALE

Local storm report, May 11, 10:38 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1038 PM CDT WED MAY 11 2016

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

1033 PM     HAIL             4 NNE COMANCHE          34.42N 97.94W
05/11/2016  E1.00 INCH       STEPHENS           OK   TRAINED SPOTTER

&&

MAHALE

Local storm report, May 11, 10:42 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1042 PM CDT WED MAY 11 2016

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

1025 PM     HAIL             2 E COMANCHE            34.37N 97.93W
05/11/2016  E1.75 INCH       STEPHENS           OK   BROADCAST MEDIA

            RELAYED FROM KSWO-TV.

&&

MAHALE

Local storm report, May 11, 10:47 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1047 PM CDT WED MAY 11 2016

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

1040 PM     HAIL             5 ESE DUNCAN            34.47N 97.88W
05/11/2016  E1.75 INCH       STEPHENS           OK   BROADCAST MEDIA

            RELAYED FROM KSWO-TV.

&&

MAHALE

Local storm report, May 11, 10:49 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1049 PM CDT WED MAY 11 2016

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

1045 PM     HAIL             ADDINGTON               34.24N 97.97W
05/11/2016  E1.50 INCH       JEFFERSON          OK   STORM CHASER

&&

MAHALE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 10:10 PM CDT	Special Weather Statement	OUN	Stephens	35 min
May 11, 10:16 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Stephens	44 min
May 11, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Stephens	49 min
May 11, 10:58 PM CDT	Special Weather Statement	OUN	McClain	32 min
May 11, 11:01 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	44 min
May 11, 11:34 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie, Seminole	26 min
May 11, 11:36 PM CDT	Special Weather Statement	OUN	Pottawatomie	24 min
May 11, 11:40 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pottawatomie	35 min
May 11, 11:57 PM CDT	Areal Flood Advisory	OUN	Cleveland, Garvin, Grady, McClain, Pottawatomie	3 hr
May 11, 11:58 PM CDT	Special Weather Statement	OUN	Beckham	32 min
May 12, 12:12 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Pontotoc, Pottawatomie, Seminole	48 min
May 12, 12:19 AM CDT	Special Weather Statement	OUN	Noble	26 min
May 12, 12:24 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	51 min
May 12, 12:33 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	42 min
May 12, 12:37 AM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	38 min
May 12, 12:56 AM CDT	Severe Thunderstorm Warning	OUN	Hughes, McClain, Pontotoc, Pottawatomie, Seminole	49 min
May 12, 1:11 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Greer, Jackson, Kiowa	49 min
May 12, 1:13 AM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson, Tillman	47 min
May 12, 1:43 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc, Pottawatomie, Seminole	47 min
May 12, 1:47 AM CDT	Areal Flood Advisory	OUN	Garvin, Hughes, McClain, Pontotoc, Pottawatomie, Seminole	118 min
May 12, 1:52 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	24 min
May 12, 1:58 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Kiowa	47 min
May 12, 2:07 AM CDT	Special Weather Statement	OUN	Lincoln	23 min
May 12, 2:18 AM CDT	Areal Flood Advisory	OUN	Lincoln, Oklahoma, Pottawatomie	3 hr
May 12, 2:24 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Pontotoc	51 min
May 12, 2:37 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Tillman	38 min
May 12, 2:42 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Jefferson, Stephens	33 min
May 12, 3:13 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Stephens	47 min
May 12, 3:32 AM CDT	Special Weather Statement	OUN	Atoka, Coal	43 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2016 Every severe thunderstorm warning in 2016

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.