Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 9, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Apr 14, 2011, 6:15 PM CDT for 4 counties in Oklahoma. It was in force for 75 min. 5 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 14, 2011, 6:15 PM CDT (23:15 UTC)
- Expired
- Apr 14, 2011, 7:30 PM CDT
- In force
- 75 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Atoka County, OK, Bryan County, OK, Johnston County, OK, Marshall County, OK
The radar
The Norman radar (KTLX), 149 km from the middle of the area, began a volume at 23:16 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 14, 6:22 PM CDT | TORNADO | 4 S Milburn, OK | STOVEPIPE TORNADO ON GROUND. |
| Apr 14, 6:23 PM CDT | HAIL 4.25 | Tishomingo, OK | |
| Apr 14, 6:45 PM CDT | HAIL 4 | Fillmore, OK | |
| Apr 14, 7:23 PM CDT | TORNADO 3 | Tushka, OK | *** 2 FATAL *** NUMEROUS STORM CHASER AND MEDIA REPORTS THAT A LARGE TORNADO BEGAN 5 MILES WEST SOUTHWEST OF TUSHKA AND CONTINUED NORTHEAST THROUGH THE SOUTH AND SOUTHEAST PORTIONS OF ATOKA. SIGNFICANT DAMAGE OCCURRED IN AND AROUND THE TOWN OF TUSHKA. THE TIME |
| Apr 14, 7:23 PM CDT | TORNADO | 3 N Caney, OK | NUMEROUS STORM CHASER AND MEDIA REPORTS OF A LARGE TORNADO WITH DAMAGE NORTH OF CANEY NEAR TUSHKA AND ATOKA. |
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 14, 2:28 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 146 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
- 121 J/kg
- Mixed-layer CIN
- -508 J/kg
- Mixed-layer LCL
- 937 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 564 m²/s²
- 0-3 km storm-relative helicity
- 551 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
100 WFUS54 KOUN 142315 TOROUN OKC005-013-069-095-150030- /O.NEW.KOUN.TO.W.0009.110414T2315Z-110415T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORMAN OK 615 PM CDT THU APR 14 2011 THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN ATOKA COUNTY IN SOUTHEAST OKLAHOMA... NORTHERN BRYAN COUNTY IN SOUTHEAST OKLAHOMA... SOUTHERN JOHNSTON COUNTY IN SOUTHEAST OKLAHOMA... NORTHEASTERN MARSHALL COUNTY IN SOUTHEAST OKLAHOMA... * UNTIL 730 PM CDT * AT 614 PM CDT...THE MOST DANGEROUS PART OF A TORNADIC THUNDERSTORM WAS LOCATED 5 MILES SOUTHEAST OF RUSSETT OR JUST NORTH OF MADILL... MOVING EAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE BENTLEY...BOGGY DEPOT STATE PARK...CADDO...CANEY...COLEMAN...FILLMORE...KENEFIC...LITTLE CITY...MILBURN...NIDA...NORTHEASTERN LAKE TEXOMA...RAVIA... RUSSETT...TISHOMINGO AND TUSHKA. 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 3437 9611 3402 9602 3410 9678 3424 9684 TIME...MOT...LOC 2314Z 263DEG 26KT 3415 9672 $$
3 follow-up statements
100 WWUS54 KOUN 142325 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 625 PM CDT THU APR 14 2011 OKC005-013-069-095-150030- /O.CON.KOUN.TO.W.0009.000000T0000Z-110415T0030Z/ BRYAN OK-JOHNSTON OK-MARSHALL OK-ATOKA OK- 625 PM CDT THU APR 14 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR SOUTHWESTERN ATOKA...NORTHEASTERN MARSHALL...SOUTHERN JOHNSTON AND NORTHERN BRYAN COUNTIES... AT 623 PM CDT...STORM SPOTTERS CONTINUED TO OBSERVED A TORNADO JUST SOUTH OF TISHOMINGO...MOVING EAST AT 30 MPH. PERSONS NEAR THE NORTHERN PORTION OF LAKE TEXOMA...MILBURN...AND FOLSOM NEED TO TAKE IMMEDIATE TORNADO PRECAUTIONS. DESTRUCTIVE HAIL...THE SIZE OF GRAPEFRUIT...WILL OCCUR IN AND NEAR TISHOMINGO AND FILLMORE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS DAMAGING HAIL TO THE SIZE OF BASEBALLS OR LARGER. && LAT...LON 3412 9671 3424 9680 3437 9611 3402 9602 TIME...MOT...LOC 2323Z 261DEG 27KT 3418 9664 $$
688 WWUS54 KOUN 142338 RRA SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 638 PM CDT THU APR 14 2011 OKC095-142346- /O.CAN.KOUN.TO.W.0009.000000T0000Z-110415T0030Z/ MARSHALL OK- 638 PM CDT THU APR 14 2011 ...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTHEASTERN MARSHALL COUNTY... LAT...LON 3415 9655 3426 9667 3437 9611 3414 9605 TIME...MOT...LOC 2336Z 261DEG 27KT 3419 9652 $$ OKC005-013-069-150030- /O.CON.KOUN.TO.W.0009.000000T0000Z-110415T0030Z/ BRYAN OK-JOHNSTON OK-ATOKA OK- 638 PM CDT THU APR 14 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR SOUTHWESTERN ATOKA...SOUTHEASTERN JOHNSTON AND EXTREME NORTHERN BRYAN COUNTIES... AT 636 PM CDT...STORM SPOTTERS CONTINUED TO OBSERVED A TORNADO JUST SOUTH OF MILBURN...MOVING EAST AT 30 MPH. PERSONS NEAR AND EAST OF MILBURN SHOULD TAKE IMMEDIATE TORNADO PRECAUTIONS! PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS DAMAGING HAIL TO THE SIZE OF BASEBALLS WHICH WILL BE SEEN FARTHER NORTH TOWARD MILBURN AND FILLMORE. && LAT...LON 3415 9655 3426 9667 3437 9611 3414 9605 TIME...MOT...LOC 2336Z 261DEG 27KT 3419 9652 $$
906
WWUS54 KOUN 150016
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
716 PM CDT THU APR 14 2011
OKC013-069-150026-
/O.CAN.KOUN.TO.W.0009.000000T0000Z-110415T0030Z/
BRYAN OK-JOHNSTON OK-
716 PM CDT THU APR 14 2011
...THE TORNADO WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN JOHNSTON
AND EXTREME NORTHERN BRYAN COUNTIES...
LAT...LON 3422 9635 3430 9641 3431 9640 3437 9611
3422 9607
TIME...MOT...LOC 0016Z 253DEG 22KT 3432 9627
$$
OKC005-150030-
/O.CON.KOUN.TO.W.0009.000000T0000Z-110415T0030Z/
ATOKA OK-
716 PM CDT THU APR 14 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR WESTERN
ATOKA COUNTY...
AT 716 PM CDT...A THUNDERSTORM WITH A HISTORY OF PRODUCING TORNADOES
WAS LOCATED 6 MILES NORTHWEST OF CANEY...MOVING EAST AT 25 MPH.
* LOCATIONS IN THE WARNING INCLUDE BOGGY DEPOT STATE PARK...CANEY AND
TUSHKA.
LAT...LON 3422 9635 3430 9641 3431 9640 3437 9611
3422 9607
TIME...MOT...LOC 0016Z 253DEG 22KT 3432 9627
$$The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 3:58 AM CDT | High Wind Watch | OUN | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 18 more | 18 hr |
| Apr 14, 3:58 AM CDT | Wind Advisory | OUN | Beckham, Custer, Greer, Harmon, Jackson, Kiowa and 3 more | 12 hr |
| Apr 14, 3:58 AM CDT | Wind Advisory | OUN | Atoka, Bryan, Carter, Cleveland, Coal, Cotton and 18 more | 42 hr |
| Apr 14, 3:07 PM CDT | Special Weather Statement | OUN | Carter | 23 min |
| Apr 14, 3:33 PM CDT | Severe Thunderstorm Warning | OUN | Payne | 27 min |
| Apr 14, 3:34 PM CDT | Fire Weather Watch | OUN | Beckham, Caddo, Comanche, Cotton, Custer, Greer and 6 more | 13 hr |
| Apr 14, 3:41 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, Murray, Pontotoc | 64 min |
| Apr 14, 4:00 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Payne | 60 min |
| Apr 14, 4:03 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie | 42 min |
| Apr 14, 4:06 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, McClain, Pontotoc, Pottawatomie, Seminole | 39 min |
| Apr 14, 4:12 PM CDT | Tornado Warning | OUN | Garvin, Murray, Pontotoc | 63 min |
| Apr 14, 4:41 PM CDT | Tornado Warning | OUN | Lincoln, Payne | 18 min |
| Apr 14, 4:42 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Johnston, Love | 63 min |
| Apr 14, 4:45 PM CDT | Severe Thunderstorm Warning | OUN | Hughes, Lincoln, Pottawatomie, Seminole | 45 min |
| Apr 14, 4:48 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, Murray, Pontotoc | 57 min |
| Apr 14, 5:14 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Hughes, Johnston, Murray, Pontotoc | 61 min |
| Apr 14, 5:29 PM CDT | Tornado Warning | OUN | Carter, Johnston, Marshall | 46 min |
| Apr 14, 5:31 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie, Seminole | 44 min |
| Apr 14, 5:31 PM CDT | Tornado Warning | OUN | Coal, Johnston, Pontotoc | 59 min |
| Apr 14, 6:17 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Hughes, Pontotoc | 58 min |
| Apr 14, 6:21 PM CDT | Severe Thunderstorm Warning | OUN | Hughes, Seminole | 39 min |
| Apr 14, 6:29 PM CDT | Tornado Warning | OUN | Atoka, Coal | 46 min |
| Apr 14, 6:48 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Garvin, Murray | 42 min |
| Apr 14, 6:54 PM CDT | Tornado Warning | OUN | Atoka, Coal, Johnston | 81 min |
| Apr 14, 6:59 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Pontotoc | 31 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.