Alert archive / Oklahoma / Tornado Warnings in 2011

Tornado Warning 83, NWS Norman, OK

November 7, 2011Caddo County, Comanche County, Kiowa County, Oklahoma

NWS Norman, OK issued this tornado warning at Nov 7, 2011, 4:14 PM CST for Caddo County, Comanche County, Kiowa County, Oklahoma. It was in force for 46 min. 1 report 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: Nov 7, 2011, 4:14 PM CST (22:14 UTC)
Expired: Nov 7, 2011, 5:00 PM CST
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Caddo County, OK, Comanche County, OK, Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 72 km from the middle of the area, began a volume at 22:17 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
Nov 7, 4:45 PM CST	TORNADO	7 Sse Carnegie, OK	THIS TORNADO WAS OBSERVED TO THE SOUTH-SOUTHEAST OF CARNEGIE AND TO THE SOUTHWEST OF FORT COBB AND LASTED FOR A FEW MINUTES.

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
Nov 7, 1:11 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.2 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: 1081 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

090 
WFUS54 KOUN 072214
TOROUN
OKC015-031-075-072300-
/O.NEW.KOUN.TO.W.0083.111107T2214Z-111107T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
414 PM CST MON NOV 7 2011

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN CADDO COUNTY IN SOUTHWEST OKLAHOMA...
  NORTHWESTERN COMANCHE COUNTY IN SOUTHWEST OKLAHOMA...
  EASTERN KIOWA COUNTY IN SOUTHWEST OKLAHOMA...

* UNTIL 500 PM CST

* AT 414 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 9 MILES
  NORTH OF WICHITA MOUNTAINS WILDLIFE REFUGE...MOVING NORTHEAST AT 30
  MPH.

* LOCATIONS IN THE WARNING INCLUDE FORT COBB AND NORTHWESTERN WICHITA
  MOUNTAINS WILDLIFE REFUGE.

LAT...LON 3486 9882 3510 9860 3515 9855 3509 9833
      3481 9864 3476 9873
TIME...MOT...LOC 2214Z 218DEG 28KT 3486 9870

$$
WR

4 follow-up statements

912 
WWUS54 KOUN 072219
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
419 PM CST MON NOV 7 2011

OKC031-072229-
/O.CAN.KOUN.TO.W.0083.000000T0000Z-111107T2300Z/
COMANCHE OK-
419 PM CST MON NOV 7 2011

...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTHWESTERN COMANCHE
COUNTY...

LAT...LON 3486 9860 3486 9877 3493 9873 3510 9860
      3515 9855 3509 9833
TIME...MOT...LOC 2219Z 218DEG 28KT 3488 9867

$$

OKC015-075-072300-
/O.CON.KOUN.TO.W.0083.000000T0000Z-111107T2300Z/
CADDO OK-KIOWA OK-
419 PM CST MON NOV 7 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CST FOR EASTERN
KIOWA AND SOUTHWESTERN CADDO COUNTIES...

AT 419 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 21 MILES
SOUTHWEST OF FORT COBB...MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE FORT COBB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3486 9860 3486 9877 3493 9873 3510 9860
      3515 9855 3509 9833
TIME...MOT...LOC 2219Z 218DEG 28KT 3488 9867

$$
WR

639 
WWUS54 KOUN 072229
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
429 PM CST MON NOV 7 2011

OKC015-075-072300-
/O.CON.KOUN.TO.W.0083.000000T0000Z-111107T2300Z/
CADDO OK-KIOWA OK-
429 PM CST MON NOV 7 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CST FOR EASTERN
KIOWA AND SOUTHWESTERN CADDO COUNTIES...

AT 430 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 17 MILES
SOUTHWEST OF FORT COBB...MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE FORT COBB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3486 9861 3493 9873 3507 9861 3515 9855
      3509 9833
TIME...MOT...LOC 2230Z 222DEG 28KT 3493 9861

$$
WR

373 
WWUS54 KOUN 072241 RRA
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
441 PM CST MON NOV 7 2011

OKC075-072251-
/O.CAN.KOUN.TO.W.0083.000000T0000Z-111107T2300Z/
KIOWA OK-
441 PM CST MON NOV 7 2011

...THE TORNADO WARNING HAS BEEN CANCELLED FOR EASTERN KIOWA COUNTY...

LAT...LON 3507 9861 3515 9855 3509 9833 3494 9862
      3500 9862 3503 9862
TIME...MOT...LOC 2241Z 211DEG 26KT 3500 9856

$$

OKC015-072300-
/O.CON.KOUN.TO.W.0083.000000T0000Z-111107T2300Z/
CADDO OK-
441 PM CST MON NOV 7 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CST FOR WESTERN
CADDO COUNTY...

AT 441 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 12 MILES
SOUTHWEST OF FORT COBB...MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE FORT COBB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3507 9861 3515 9855 3509 9833 3494 9862
      3500 9862 3503 9862
TIME...MOT...LOC 2241Z 211DEG 26KT 3500 9856

$$
WR

431 
WWUS54 KOUN 072249
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
449 PM CST MON NOV 7 2011

OKC015-072300-
/O.CON.KOUN.TO.W.0083.000000T0000Z-111107T2300Z/
CADDO OK-
449 PM CST MON NOV 7 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CST FOR WESTERN
CADDO COUNTY...

AT 449 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 7 MILES
SOUTHWEST OF FORT COBB...MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE FORT COBB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

THE TORNADO IS LIKELY TO PASS BETWEEN CARNEGIE AND FORT COBB.

&&

LAT...LON 3507 9861 3515 9855 3509 9833 3494 9862
      3500 9862 3503 9862
TIME...MOT...LOC 2249Z 211DEG 26KT 3505 9852

$$
WR

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 6, 9:08 PM CST	Special Weather Statement	OUN	Carter, Murray	37 min
Nov 6, 10:12 PM CST	Special Weather Statement	OUN	Murray	33 min
Nov 6, 10:19 PM CST	Special Weather Statement	OUN	Carter, Jefferson	56 min
Nov 6, 10:55 PM CST	Flash Flood Warning	OUN	Carter, Jefferson	3 hr
Nov 6, 11:47 PM CST	Flash Flood Warning	OUN	Carter, Murray	3 hr
Nov 7, 1:31 AM CST	Flash Flood Warning	OUN	Johnston, Murray, Pontotoc	4 hr
Nov 7, 7:14 AM CST	Special Weather Statement	OUN	Dewey	46 min
Nov 7, 12:25 PM CST	Special Weather Statement	OUN	Beckham	35 min
Nov 7, 1:06 PM CST	Special Weather Statement	OUN	Roger Mills	9 min
Nov 7, 1:16 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Roger Mills	59 min
Nov 7, 1:29 PM CST	Special Weather Statement	OUN	Greer, Harmon	31 min
Nov 7, 1:33 PM CST	Special Weather Statement	OUN	Jackson	42 min
Nov 7, 1:49 PM CST	Severe Thunderstorm Warning	OUN	Greer, Harmon	56 min
Nov 7, 2:02 PM CST	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson, Kiowa, Tillman	58 min
Nov 7, 2:14 PM CST	Tornado Warning	OUN	Greer, Harmon, Kiowa	46 min
Nov 7, 2:17 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Blaine, Custer, Dewey, Roger Mills	58 min
Nov 7, 2:44 PM CST	Tornado Warning	OUN	Jackson, Kiowa, Tillman	46 min
Nov 7, 2:47 PM CST	Special Weather Statement	OUN	Grant, Major	43 min
Nov 7, 3:00 PM CST	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa, Washita	60 min
Nov 7, 3:08 PM CST	Tornado Warning	OUN	Kiowa, Washita	52 min
Nov 7, 3:15 PM CST	Special Weather Statement	OUN	Harmon	30 min
Nov 7, 3:23 PM CST	Special Weather Statement	OUN	Roger Mills	37 min
Nov 7, 3:27 PM CST	Tornado Warning	OUN	Comanche, Kiowa, Tillman	48 min
Nov 7, 3:34 PM CST	Special Weather Statement	OUN	Greer	26 min
Nov 7, 3:42 PM CST	Special Weather Statement	OUN	Kay	33 min
Nov 7, 3:42 PM CST	Tornado Warning	OUN	Kiowa	33 min
Nov 7, 3:47 PM CST	Special Weather Statement	OUN	Major	28 min
Nov 7, 4:05 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Greer, Washita	40 min
Nov 7, 4:06 PM CST	Special Weather Statement	OUN	Caddo	24 min
Nov 7, 4:18 PM CST	Severe Thunderstorm Warning	OUN	Kay	42 min
Nov 7, 4:33 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Custer, Kiowa, Washita	42 min
Nov 7, 4:39 PM CST	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	51 min
Nov 7, 4:57 PM CST	Severe Thunderstorm Warning	OUN	Kay	63 min
Nov 7, 4:57 PM CST	Tornado Warning	OUN	Caddo	38 min
Nov 7, 5:16 PM CST	Severe Thunderstorm Warning	OUN	Custer, Kiowa, Washita	59 min
Nov 7, 5:20 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Greer	40 min
Nov 7, 5:37 PM CST	Severe Thunderstorm Warning	OUN	Harmon, Jackson	53 min
Nov 7, 5:48 PM CST	Severe Thunderstorm Warning	OUN	Blaine, Caddo	27 min

Nearby

Tornado Warnings in Oklahoma, 2011 Every tornado warning in 2011 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.