Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 84, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Nov 7, 2011, 4:57 PM CST for Caddo County, Oklahoma. It was in force for 38 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, 4:57 PM CST (22:57 UTC)
- Expired
- Nov 7, 2011, 5:35 PM CST
- In force
- 38 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
County Caddo County, OK
The radar
The Altus AFB radar (KFDR), 103 km from the middle of the area, began a volume at 23:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 7, 5:00 PM CST | TORNADO | 3 Nw Fort Cobb, OK | THIS MULTIPLE-VORTEX TORNADO DEVELOPED AT APPROXIMATELY 500 PM CST TO THE NORTHWEST OF FORT COBB... AND MOVED NORTH AFFECTING AREAS AROUND FORT COBB LAKE. THIS TORNADO LASTED 10 TO 15 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, 11.0 hours before the alert went out and 96 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
553 WFUS54 KOUN 072257 TOROUN OKC015-072345- /O.NEW.KOUN.TO.W.0084.111107T2257Z-111107T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORMAN OK 457 PM CST MON NOV 7 2011 THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A * TORNADO WARNING FOR... NORTHERN CADDO COUNTY IN SOUTHWEST OKLAHOMA... * UNTIL 545 PM CST * AT 455 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 6 MILES SOUTHWEST OF FORT COBB...MOVING NORTHEAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE ALBERT...BINGER...FORT COBB RESERVOIR...FORT COBB AND LOOKEBA. THE TORANDO IS EXPECTED TO PASS NEAR THE WESTERN EDGE OF 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 3508 9861 3538 9842 3538 9817 3502 9848 TIME...MOT...LOC 2255Z 211DEG 26KT 3509 9851 $$ WR
5 follow-up statements
984
WWUS54 KOUN 072302
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
502 PM CST MON NOV 7 2011
OKC015-072345-
/O.CON.KOUN.TO.W.0084.000000T0000Z-111107T2345Z/
CADDO OK-
502 PM CST MON NOV 7 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CST FOR CENTRAL
CADDO COUNTY...
AT 502 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO 5 MILES
SOUTH OF FORT COBB RESERVOIR...MOVING NORTHEAST AT 30 MPH.
* LOCATIONS IN THE WARNING INCLUDE ALBERT...BINGER...FORT COBB
RESERVOIR AND LOOKEBA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.
&&
LAT...LON 3512 9858 3538 9842 3538 9817 3515 9839
3509 9846
TIME...MOT...LOC 2302Z 211DEG 26KT 3513 9848
$$
WR498
WWUS54 KOUN 072313
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
513 PM CST MON NOV 7 2011
OKC015-072345-
/O.CON.KOUN.TO.W.0084.000000T0000Z-111107T2345Z/
CADDO OK-
513 PM CST MON NOV 7 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CST FOR NORTHERN
CADDO COUNTY...
AT 513 PM CST...RADAR AND STORM SPOTTERS OBSERVED A TORNADO NEAR
EXTREME SOUTHEASTERN FORT COBB RESERVOIR...MOVING NORTHEAST AT 30
MPH.
* LOCATIONS IN THE WARNING INCLUDE ALBERT...BINGER...FORT COBB
RESERVOIR AND LOOKEBA.
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 3519 9854 3538 9842 3538 9817 3515 9839
3512 9842
TIME...MOT...LOC 2313Z 211DEG 26KT 3520 9843
$$
WR522 WWUS54 KOUN 072322 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 522 PM CST MON NOV 7 2011 OKC015-072345- /O.CON.KOUN.TO.W.0084.000000T0000Z-111107T2345Z/ CADDO OK- 522 PM CST MON NOV 7 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CST FOR CENTRAL CADDO COUNTY... AT 522 PM CST...A THUNDERSTORM WITH A HISTORY OF PRODUCING TORNADOES WAS LOCATED NEAR ALBERT...MOVING NORTHEAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE ALBERT...BINGER...EXTREME NORTHERN FORT COBB RESERVOIR AND LOOKEBA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE WALLS. && LAT...LON 3519 9835 3523 9849 3538 9842 3538 9817 TIME...MOT...LOC 2322Z 211DEG 26KT 3526 9839 $$ WR
061 WWUS54 KOUN 072329 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 529 PM CST MON NOV 7 2011 OKC015-072345- /O.CON.KOUN.TO.W.0084.000000T0000Z-111107T2345Z/ CADDO OK- 529 PM CST MON NOV 7 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CST FOR CENTRAL CADDO COUNTY... AT 529 PM CST...A THUNDERSTORM WITH A HISTORY OF PRODUCING TORNADOES WAS LOCATED NEAR BINGER...MOVING NORTHEAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE BINGER AND LOOKEBA. 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 3526 9828 3530 9843 3538 9838 3538 9817 TIME...MOT...LOC 2329Z 211DEG 26KT 3531 9835 $$ WR
604 WWUS54 KOUN 072335 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 535 PM CST MON NOV 7 2011 OKC015-072346- /O.CAN.KOUN.TO.W.0084.000000T0000Z-111107T2345Z/ CADDO OK- 535 PM CST MON NOV 7 2011 ...THE TORNADO WARNING HAS BEEN CANCELLED FOR CENTRAL CADDO COUNTY... THE STORM HAS WEAKENED. LAT...LON 3526 9828 3530 9843 3538 9838 3538 9817 TIME...MOT...LOC 2336Z 211DEG 26KT 3535 9832 $$ 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, 4:14 PM CST | Tornado Warning | OUN | Caddo, Comanche, Kiowa | 46 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, 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, 2011Every tornado warning in 2011Tornadoes 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.