Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 5, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Apr 14, 2011, 4:12 PM CDT for Garvin County, Murray County, Pontotoc County, Oklahoma. It was in force for 63 min. 4 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, 4:12 PM CDT (21:12 UTC)
- Expired
- Apr 14, 2011, 5:15 PM CDT
- In force
- 63 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Garvin County, OK, Murray County, OK, Pontotoc County, OK
The radar
The Norman radar (KTLX), 80 km from the middle of the area, began a volume at 21:15 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, 4:21 PM CDT | HAIL 1.25 | Hickory, OK | |
| Apr 14, 4:30 PM CDT | HAIL 4.25 | Sulphur, OK | MAINLY QUARTER SIZED HAIL WITH A FEW SOFTBALL SIZED PIECES. REPORT RELAYED VIA SULPHUR POLICE DEPARTMENT. |
| Apr 14, 5:00 PM CDT | HAIL 1.75 | Roff, OK | |
| Apr 14, 5:00 PM CDT | HAIL 4.25 | Roff, OK |
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, 9.2 hours before the alert went out and 75 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.
022 WFUS54 KOUN 142112 TOROUN OKC049-099-123-142215- /O.NEW.KOUN.TO.W.0005.110414T2112Z-110414T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORMAN OK 412 PM CDT THU APR 14 2011 THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A * TORNADO WARNING FOR... PONTOTOC COUNTY IN EAST CENTRAL OKLAHOMA... SOUTHEASTERN GARVIN COUNTY IN SOUTHERN OKLAHOMA... NORTHEASTERN MURRAY COUNTY IN SOUTHERN OKLAHOMA... * UNTIL 515 PM CDT * AT 412 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR DAVIS...MOVING NORTHEAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE ADA...DAVIS...FITZHUGH... HICKORY...ROFF...SULPHUR AND VANOSS. 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 3490 9684 3466 9651 3446 9710 3450 9719 TIME...MOT...LOC 2112Z 238DEG 21KT 3450 9712 $$
3 follow-up statements
159 WWUS54 KOUN 142131 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 431 PM CDT THU APR 14 2011 OKC049-099-123-142215- /O.CON.KOUN.TO.W.0005.000000T0000Z-110414T2215Z/ MURRAY OK-GARVIN OK-PONTOTOC OK- 431 PM CDT THU APR 14 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR PONTOTOC...EASTERN GARVIN AND NORTHEASTERN MURRAY COUNTIES... AT 431 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WITH THE MOST DANGEROUS PORTION OF THE STORM NEAR SULPHUR...MOVING EAST-NORTHEAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE ADA...FITZHUGH...HICKORY...ROFF... SULPHUR AND VANOSS. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS DAMAGING HAIL TO THE SIZE OF BASEBALLS NEAR AND NORTH OF THE MENTIONED LOCATION. && LAT...LON 3447 9707 3457 9713 3490 9684 3466 9651 TIME...MOT...LOC 2131Z 248DEG 22KT 3454 9698 $$
733 WWUS54 KOUN 142144 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 444 PM CDT THU APR 14 2011 OKC049-099-123-142215- /O.CON.KOUN.TO.W.0005.000000T0000Z-110414T2215Z/ MURRAY OK-GARVIN OK-PONTOTOC OK- 444 PM CDT THU APR 14 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR PONTOTOC...EASTERN GARVIN AND NORTHEASTERN MURRAY COUNTIES... AT 444 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR HICKORY...MOVING EAST AT 25 MPH. DAMAGING HAIL...TO THE SIZE OF BASEBALLS...IS POSSIBLE UP TOWARD ROFF AND FITZHUGH. * LOCATIONS IN THE WARNING INCLUDE ADA...FITZHUGH...HICKORY...ROFF... SULPHUR AND VANOSS. LAT...LON 3450 9698 3457 9708 3488 9681 3466 9651 TIME...MOT...LOC 2144Z 248DEG 23KT 3457 9687 $$
851 WWUS54 KOUN 142158 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 458 PM CDT THU APR 14 2011 OKC049-142208- /O.CAN.KOUN.TO.W.0005.000000T0000Z-110414T2215Z/ GARVIN OK- 458 PM CDT THU APR 14 2011 ...THE TORNADO WARNING HAS BEEN CANCELLED FOR EASTERN GARVIN COUNTY... LAT...LON 3454 9688 3461 9697 3479 9668 3466 9651 TIME...MOT...LOC 2158Z 256DEG 23KT 3460 9676 $$ OKC099-123-142215- /O.CON.KOUN.TO.W.0005.000000T0000Z-110414T2215Z/ MURRAY OK-PONTOTOC OK- 458 PM CDT THU APR 14 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR SOUTHERN PONTOTOC AND NORTHEASTERN MURRAY COUNTIES... AT 458 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WITH THE MOST DANGEROUS PORTION OF THE STORM 4 MILES SOUTHEAST OF ROFF...MOVING EAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE ADA...FITZHUGH...HICKORY AND ROFF. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS DAMAGING HAIL TO THE SIZE OF BASEBALLS PRIMARILY NEAR ROFF AND FITZHUGH. && LAT...LON 3454 9688 3461 9697 3479 9668 3466 9651 TIME...MOT...LOC 2158Z 256DEG 23KT 3460 9676 $$
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, 4:41 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, 6:15 PM CDT | Tornado Warning | OUN | Atoka, Bryan, Johnston, Marshall | 75 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.