Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 113, NWS Norman, OK

April 13, 20126 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 13, 2012, 9:32 PM CDT for 6 counties in Oklahoma. It was in force for 58 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 13, 2012, 9:32 PM CDT (02:32 UTC)
Expired: Apr 13, 2012, 10:30 PM CDT
In force: 58 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Caddo County, OK, Canadian County, OK, Comanche County, OK, Grady County, OK, Jackson County, OK, Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 02:33 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.

What was reported inside it

Time	Report	Where	Remark
Apr 13, 10:08 PM CDT	HAIL 1	4 S Anadarko, OK	HWY 8
Apr 13, 10:16 PM CDT	HAIL 1	1 N Anadarko, OK
Apr 13, 10:28 PM CDT	HAIL 2.5	Anadarko, OK	WEST SIDE OF TOWN NEAR AIRPORT

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 13, 8:36 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.5 hours before the alert went out and 104 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: 2227 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 389 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 15.6

Open this sounding in Storm Lab

The text

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

766 
WUUS54 KOUN 140232
SVROUN
OKC015-017-031-051-065-075-140330-
/O.NEW.KOUN.SV.W.0113.120414T0232Z-120414T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
932 PM CDT FRI APR 13 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CADDO COUNTY IN SOUTHWESTERN OKLAHOMA...
  EXTREME SOUTHEASTERN CANADIAN COUNTY IN CENTRAL OKLAHOMA...
  COMANCHE COUNTY IN SOUTHWESTERN OKLAHOMA...
  GRADY COUNTY IN SOUTH CENTRAL OKLAHOMA...
  EXTREME NORTHEASTERN JACKSON COUNTY IN SOUTHWESTERN OKLAHOMA...
  KIOWA COUNTY IN SOUTHWESTERN OKLAHOMA...

* UNTIL 1030 PM CDT

* AT 928 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
  A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE DAMAGING 
  HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 47 MILES 
  SOUTHWEST OF GRACEMONT TO MOUNTAIN PARK...MOVING EAST AT 50 MPH. 

* LOCATIONS IMPACTED INCLUDE...
  MUSTANG...ANADARKO...TUTTLE...MINCO...CARNEGIE...APACHE...ELGIN...
  CYRIL...FLETCHER...BINGER...FORT COBB...VERDEN...CEMENT...
  MOUNTAIN PARK...MEDICINE PARK...GRACEMONT...EAKLY...POCASSET...
  COOPERTON AND ALBERT. 

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 41 AND 64.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO WARNING.  GET 
TO A STORM SHELTER OR STURDY BUILDING IF A TORNADO APPROACHES.

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3510 9862 3513 9859 3534 9858 3541 9770
      3464 9833 3469 9924
TIME...MOT...LOC 0228Z 266DEG 42KT 3522 9817 3472 9888 

$$

MBS

3 follow-up statements

636 
WWUS54 KOUN 140249
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
949 PM CDT FRI APR 13 2012

OKC065-140340-
/O.CAN.KOUN.SV.W.0113.000000T0000Z-120414T0330Z/
JACKSON OK-
949 PM CDT FRI APR 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN 
JACKSON COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA. THE WARNING HAS BEEN CANCELLED. 

LAT...LON 3483 9899 3500 9858 3508 9851 3534 9852
      3541 9770 3464 9833 3468 9901
TIME...MOT...LOC 0248Z 264DEG 42KT 3524 9832 3495 9836 3473 9867 

$$

OKC015-017-031-051-075-140330-
/O.CON.KOUN.SV.W.0113.000000T0000Z-120414T0330Z/
COMANCHE OK-GRADY OK-CADDO OK-CANADIAN OK-KIOWA OK-
949 PM CDT FRI APR 13 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM 
CDT FOR COMANCHE...GRADY...CADDO...EXTREME SOUTHEASTERN CANADIAN 
AND EXTREME SOUTHEASTERN KIOWA COUNTIES...

AT 944 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE DAMAGING 
HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 43 MILES 
SOUTHWEST OF BINGER TO 20 MILES SOUTHWEST OF APACHE TO 6 MILES 
SOUTHWEST OF MEERS...MOVING EAST AT 35 MPH. 

LOCATIONS IMPACTED INCLUDE...
MUSTANG...ANADARKO...TUTTLE...MINCO...APACHE...ELGIN...CYRIL...
FLETCHER...BINGER...FORT COBB...VERDEN...CEMENT...MOUNTAIN PARK...
MEDICINE PARK...GRACEMONT...POCASSET...COOPERTON...ALBERT...BOONE 
AND COGAR. 

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 41 AND 64.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO WARNING.  GET 
TO A STORM SHELTER OR STURDY BUILDING IF A TORNADO APPROACHES.

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3483 9899 3500 9858 3508 9851 3534 9852
      3541 9770 3464 9833 3468 9901
TIME...MOT...LOC 0244Z 264DEG 42KT 3524 9832 3495 9836 3473 9867 

$$

MBS

493 
WWUS54 KOUN 140312
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1012 PM CDT FRI APR 13 2012

OKC015-017-031-051-075-140330-
/O.CON.KOUN.SV.W.0113.000000T0000Z-120414T0330Z/
COMANCHE OK-GRADY OK-CADDO OK-CANADIAN OK-KIOWA OK-
1012 PM CDT FRI APR 13 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM 
CDT FOR COMANCHE...GRADY...CADDO...EXTREME SOUTHEASTERN CANADIAN 
AND EXTREME EAST CENTRAL KIOWA COUNTIES...

AT 1011 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE DAMAGING 
HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 26 MILES SOUTH 
OF COGAR TO 32 MILES WEST OF CYRIL TO 7 MILES SOUTHEAST OF 
COOPERTON...MOVING EAST AT 35 MPH. 

LOCATIONS IMPACTED INCLUDE...
MUSTANG...ANADARKO...TUTTLE...MINCO...APACHE...ELGIN...CYRIL...
FLETCHER...BINGER...VERDEN...CEMENT...MEDICINE PARK...GRACEMONT...
POCASSET...BOONE...COGAR...LAKE CHICKASHA...MEERS...LAKE ELLSWORTH 
AND STECKER. 

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 47 AND 64.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO WARNING.  GET 
TO A STORM SHELTER OR STURDY BUILDING IF A TORNADO APPROACHES.

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3515 9831 3535 9839 3541 9770 3473 9825
      3471 9882 3489 9884
TIME...MOT...LOC 0307Z 265DEG 33KT 3532 9818 3496 9825 3480 9876 

$$

MBS

523 
WWUS54 KOUN 140321
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1021 PM CDT FRI APR 13 2012

OKC017-140340-
/O.CAN.KOUN.SV.W.0113.000000T0000Z-120414T0330Z/
CANADIAN OK-
1021 PM CDT FRI APR 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN 
CANADIAN COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA. THE WARNING HAS BEEN CANCELLED. 

LAT...LON 3496 9870 3499 9834 3524 9820 3530 9779
      3473 9825 3471 9882 3489 9884
TIME...MOT...LOC 0320Z 263DEG 35KT 3511 9809 3498 9824 3481 9863 

$$

OKC015-031-051-075-140330-
/O.CON.KOUN.SV.W.0113.000000T0000Z-120414T0330Z/
COMANCHE OK-GRADY OK-CADDO OK-KIOWA OK-
1021 PM CDT FRI APR 13 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM 
CDT FOR COMANCHE...NORTHWESTERN GRADY...CADDO AND EXTREME EAST 
CENTRAL KIOWA COUNTIES...

AT 1016 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE DAMAGING 
HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 36 MILES 
SOUTHWEST OF VERDEN TO 25 MILES WEST OF CYRIL TO MEERS...MOVING 
EAST AT 30 MPH. 

LOCATIONS IMPACTED INCLUDE...
ANADARKO...TUTTLE...APACHE...ELGIN...CYRIL...FLETCHER...VERDEN...
CEMENT...MEDICINE PARK...POCASSET...BOONE...LAKE CHICKASHA...MEERS...
LAKE ELLSWORTH...STECKER...LAVERTY AND LAKE LAWTONKA. 

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 47 AND 64.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO WARNING.  GET 
TO A STORM SHELTER OR STURDY BUILDING IF A TORNADO APPROACHES.

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3496 9870 3499 9834 3524 9820 3530 9779
      3473 9825 3471 9882 3489 9884
TIME...MOT...LOC 0316Z 263DEG 35KT 3511 9809 3498 9824 3481 9863 

$$

MBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:10 PM CDT	Special Weather Statement	OUN	Blaine	20 min
Apr 13, 7:25 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Kiowa, Washita	65 min
Apr 13, 7:28 PM CDT	Tornado Warning	OUN	Comanche, Kiowa	32 min
Apr 13, 7:31 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	59 min
Apr 13, 7:36 PM CDT	Special Weather Statement	OUN	Blaine, Custer, Kingfisher	24 min
Apr 13, 7:57 PM CDT	Tornado Warning	OUN	Caddo, Kiowa	33 min
Apr 13, 8:02 PM CDT	Tornado Warning	OUN	Greer, Harmon, Jackson	28 min
Apr 13, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher	54 min
Apr 13, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	64 min
Apr 13, 8:15 PM CDT	Special Weather Statement	OUN	Noble	30 min
Apr 13, 8:25 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	65 min
Apr 13, 8:28 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Greer, Jackson, Kiowa, Tillman	62 min
Apr 13, 8:42 PM CDT	Areal Flood Warning	OUN	Caddo, Comanche, Greer, Jackson, Kiowa	3 hr
Apr 13, 8:44 PM CDT	Tornado Warning	OUN	Caddo, Kiowa	21 min
Apr 13, 9:02 PM CDT	Special Weather Statement	OUN	Kay, Major	28 min
Apr 13, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer	65 min
Apr 13, 9:26 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa	51 min
Apr 13, 9:50 PM CDT	Special Weather Statement	OUN	Grant, Kay	25 min
Apr 13, 10:06 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Washita	54 min
Apr 13, 10:16 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	59 min
Apr 13, 10:22 PM CDT	Areal Flood Warning	OUN	Caddo	3 hr
Apr 13, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	41 min
Apr 13, 10:54 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Custer, Washita	66 min
Apr 13, 11:09 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain	26 min
Apr 13, 11:13 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	47 min
Apr 13, 11:24 PM CDT	Special Weather Statement	OUN	Roger Mills	36 min
Apr 13, 11:52 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer, Washita	53 min
Apr 14, 12:05 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	55 min
Apr 14, 12:09 AM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	19 min
Apr 14, 12:22 AM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Lincoln, Logan, Payne	53 min
Apr 14, 12:43 AM CDT	Special Weather Statement	OUN	Oklahoma	32 min
Apr 14, 12:43 AM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills	62 min
Apr 14, 12:46 AM CDT	Special Weather Statement	OUN	Garfield, Noble	44 min
Apr 14, 12:53 AM CDT	Special Weather Statement	OUN	Canadian	67 min
Apr 14, 1:16 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	44 min
Apr 14, 1:23 AM CDT	Special Weather Statement	OUN	Oklahoma	37 min
Apr 14, 1:26 AM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	64 min
Apr 14, 1:37 AM CDT	Special Weather Statement	OUN	Garfield, Major, Noble	68 min
Apr 14, 1:48 AM CDT	Wind Advisory	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 40 more	26 hr
Apr 14, 1:58 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	62 min
Apr 14, 2:22 AM CDT	Areal Flood Advisory	OUN	Kingfisher, Logan	113 min
Apr 14, 2:24 AM CDT	Tornado Warning	OUN	Canadian, Logan, Oklahoma	36 min
Apr 14, 2:32 AM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	43 min
Apr 14, 2:41 AM CDT	Tornado Warning	OUN	Logan, Payne	22 min
Apr 14, 2:53 AM CDT	Special Weather Statement	OUN	Garfield, Major	67 min
Apr 14, 2:54 AM CDT	Tornado Warning	OUN	Logan	36 min
Apr 14, 3:25 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	65 min
Apr 14, 4:07 AM CDT	Special Weather Statement	OUN	Garfield	23 min
Apr 14, 4:27 AM CDT	Severe Thunderstorm Warning	OUN	Payne	63 min
Apr 14, 4:29 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	61 min
Apr 14, 5:29 AM CDT	Special Weather Statement	OUN	Noble	46 min
Apr 14, 1:59 PM CDT	Special Weather Statement	OUN	Harper	31 min
Apr 14, 2:21 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper	54 min
Apr 14, 3:01 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	59 min
Apr 14, 3:10 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	28 min
Apr 14, 3:18 PM CDT	Tornado Warning	OUN	Harper, Woods	27 min
Apr 14, 3:20 PM CDT	Tornado Warning	OUN	Ellis, Woodward	25 min
Apr 14, 3:40 PM CDT	Tornado Warning	OUN	Ellis, Harper, Woodward	35 min
Apr 14, 4:06 PM CDT	Special Weather Statement	OUN	Roger Mills	24 min
Apr 14, 4:10 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills, Woodward	50 min
Apr 14, 4:12 PM CDT	Tornado Warning	OUN	Harper, Woods, Woodward	33 min
Apr 14, 4:41 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woods, Woodward	49 min
Apr 14, 4:43 PM CDT	Tornado Warning	OUN	Woods	20 min
Apr 14, 4:59 PM CDT	Tornado Warning	OUN	Ellis, Woodward	46 min
Apr 14, 5:01 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	44 min
Apr 14, 5:30 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Roger Mills, Woodward	45 min
Apr 14, 5:44 PM CDT	Tornado Warning	OUN	Major, Woods, Woodward	46 min
Apr 14, 6:01 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Woodward	44 min
Apr 14, 6:07 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	21 min
Apr 14, 6:14 PM CDT	Tornado Warning	OUN	Dewey, Woodward	31 min
Apr 14, 6:27 PM CDT	Tornado Warning	OUN	Woods, Woodward	48 min
Apr 14, 6:43 PM CDT	Tornado Warning	OUN	Major, Woods, Woodward	32 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.