Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 72, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Jun 9, 2011, 8:22 PM CDT for Custer County, Roger Mills County, Oklahoma. It was in force for 23 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
- Jun 9, 2011, 8:22 PM CDT (01:22 UTC)
- Expired
- Jun 9, 2011, 8:45 PM CDT
- In force
- 23 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Custer County, OK, Roger Mills County, OK
The radar
The Altus AFB radar (KFDR), 146 km from the middle of the area, began a volume at 01:25 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 |
|---|---|---|---|
| Jun 9, 8:23 PM CDT | TSTM WND GST 60 | 3 Wsw Hammon, OK | REPORT RELAYED VIA KWTV. |
| Jun 9, 8:31 PM CDT | TSTM WND GST 60 | Hammon, OK | |
| Jun 9, 8:31 PM CDT | HAIL 1 | Hammon, 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 |
|---|---|---|---|
| Jun 9, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 1.4 hours before the alert went out and 171 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
- 561 J/kg
- Mixed-layer CIN
- -346 J/kg
- Mixed-layer LCL
- 2249 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
360 WFUS54 KOUN 100122 TOROUN OKC039-129-100145- /O.NEW.KOUN.TO.W.0072.110610T0122Z-110610T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORMAN OK 822 PM CDT THU JUN 9 2011 THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A * TORNADO WARNING FOR... WESTERN CUSTER COUNTY IN WESTERN OKLAHOMA... EASTERN ROGER MILLS COUNTY IN WESTERN OKLAHOMA... * UNTIL 845 PM CDT * AT 822 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR HAMMON...MOVING EAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE BUTLER...FOSS RESERVOIR...HAMMON AND STAFFORD. 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 3573 9902 3552 9905 3561 9950 3571 9948 TIME...MOT...LOC 0122Z 275DEG 24KT 3565 9940 $$
1 follow-up statement
416 WWUS54 KOUN 100139 SVSOUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 839 PM CDT THU JUN 9 2011 OKC129-100148- /O.CAN.KOUN.TO.W.0072.000000T0000Z-110610T0145Z/ ROGER MILLS OK- 839 PM CDT THU JUN 9 2011 ...THE TORNADO WARNING HAS BEEN CANCELLED FOR EASTERN ROGER MILLS COUNTY... LAT...LON 3559 9936 3566 9936 3573 9902 3552 9905 TIME...MOT...LOC 0138Z 275DEG 24KT 3561 9929 $$ OKC039-100145- /O.CON.KOUN.TO.W.0072.000000T0000Z-110610T0145Z/ CUSTER OK- 839 PM CDT THU JUN 9 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR WESTERN CUSTER COUNTY... AT 838 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF FOSS RESERVOIR...MOVING EAST AT 30 MPH. RADAR INDICATES THAT THE CIRCULATION WITH THIS STORM HAS WEAKENED AND THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE AT 845 PM. * LOCATIONS IN THE WARNING INCLUDE BUTLER...FOSS RESERVOIR AND STAFFORD. LAT...LON 3559 9936 3566 9936 3573 9902 3552 9905 TIME...MOT...LOC 0138Z 275DEG 24KT 3561 9929 $$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 7:00 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Woodward | 45 min |
| Jun 9, 7:06 PM CDT | Special Weather Statement | OUN | Major | 24 min |
| Jun 9, 7:29 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey, Ellis, Roger Mills | 46 min |
| Jun 9, 7:38 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Major, Woods | 52 min |
| Jun 9, 7:59 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant | 31 min |
| Jun 9, 8:14 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey, Roger Mills | 46 min |
| Jun 9, 8:35 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant | 40 min |
| Jun 9, 8:56 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Washita | 49 min |
| Jun 9, 9:42 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Custer, Washita | 30 min |
| Jun 9, 11:06 PM CDT | Special Weather Statement | OUN | Garfield, Kingfisher | 39 min |
| Jun 9, 11:36 PM CDT | Special Weather Statement | OUN | Woods | 24 min |
| Jun 9, 11:45 PM CDT | Special Weather Statement | OUN | Garfield, Noble | 60 min |
| Jun 10, 12:09 AM CDT | Special Weather Statement | OUN | Alfalfa | 36 min |
| Jun 10, 12:39 AM CDT | Special Weather Statement | OUN | Alfalfa | 36 min |
| Jun 10, 1:16 AM CDT | Special Weather Statement | OUN | Grant, Noble | 29 min |
| Jun 10, 1:45 AM CDT | Special Weather Statement | OUN | Alfalfa, Garfield | 30 min |
| Jun 10, 7:15 AM CDT | Special Weather Statement | OUN | Grady, Lincoln, Oklahoma | 45 min |
| Jun 10, 9:20 AM CDT | Special Weather Statement | OUN | Cleveland, Lincoln, McClain, Payne, Pottawatomie | 25 min |
| Jun 10, 5:47 PM CDT | Special Weather Statement | OUN | Blaine | 23 min |
| Jun 10, 6:11 PM CDT | Special Weather Statement | OUN | Canadian | 19 min |
| Jun 10, 6:26 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Kingfisher | 64 min |
| Jun 10, 6:47 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 58 min |
| Jun 10, 6:56 PM CDT | Special Weather Statement | OUN | Oklahoma | 19 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.