Alert archive / Oklahoma / Tornado Warnings in 1991
Tornado Warning 39, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Apr 12, 1991, 7:07 PM CDT for Kingfisher County, Oklahoma. It was in force for 53 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 12, 1991, 7:07 PM CDT (00:07 UTC)
- Expired
- Apr 12, 1991, 8:00 PM CDT
- In force
- 53 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County Kingfisher County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 12, 7:13 PM CDT | Tornado F1 | Kingfisher, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.1 hours before the alert went out and 94 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
- 2981 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 2.6
- Supercell composite
- 12.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOKC 130007 TOROKC OKC073-047-130100- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 707 PM CDT FRI APR 12 1991 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 800 PM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN CENTRAL OKLAHOMA ...NORTHEASTERN KINGFISHER COUNTY IN NORTHWEST OKLAHOMA ...EASTERN GARFIELD COUNTY AT 707 PM RADAR INDICATED A TORNADO 6 MILES EAST SOUTHEAST OF HENNESSEY MOVING TOWARDS THE NORTHEAST AT 15 MPH. SPOTTERS REPORT ROTATION IN THIS AREA DURING THE PAST FEW MINUTES. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Apr 12, 5:08 PM CDT, 1 hour 59 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 506 PM CDT FRI APR 12 1991 TIME(CDT) COUNTY REPORT 445 PM ALFALFA ONE INCH DIAMTER HAIL AT GOLTRY.
Local storm report, Apr 12, 5:21 PM CDT, 1 hour 46 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
519 PM CDT FRI APR 12 1991
TIME(CDT) COUNTY REPORT
518 PM KINGFISHER TORNADO 5 SOUTH OF KINGFISHER AND TWO INCH
HAIL 1 SOUTH OF KINGFISHER...FROM COUNTY
CIVIL DEFENSE.Local storm report, Apr 12, 5:57 PM CDT, 1 hour 10 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
557 PM CDT FRI APR 12 1991
TIME(CDT) COUNTY REPORT
552 PM CARTER GOLF BALL SIZE HAIL JUST SOUTH OF LONE
GROVE...FROM THE CARTER COUNTY CIVIL
DEFENSE.Special weather statement, Apr 12, 5:58 PM CDT, 1 hour 9 minutes before
TXZ020-019-122350- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 550 PM CDT FRI APR 12 1991 ...TORNADO WATCH IS IN EFFECT UNTIL 900 PM CDT FOR THE FOLLOWING NORTH CENTRAL TEXAS COUNTIES HARDEMAN...FOARD...KNOX...WILBARGER...BAYLOR... WICHITA AND COTTON COUNTY OF OKLAHOMA... ...TORNADO WATCH IS IN EFFECT UNTIL 1000 PM CDT FOR THE FOLLOWING NORTH CENTRAL TEXAS COUNTIES CLAY...MONTAGUE...JACK...ARCHER AND YOUNG... ISOLATED RAINSHOWERS HAVE OCCURRED IN THE LAST HOUR OVER PORTIONS OF JACK...YOUNG...AND BAYLOR COUNTIES. SOUTH OF THE RED RIVER...AN ISOLATED SEVERE THUNDERSTORM CONTINUES TO AFFECT PORTIONS OF HOOD AND SUMERWELL COUNTIES NEAR GLEN ROSE. A TORNADO HAS BEEN CONFIRMED ON THE GROUND FROM THIS STORM. MOVEMENT OF THE THUNDERSTORM WAS SLOWLY TOWARDS THE EAST. ELSEWHERE...AN ISOLATED THUNDERSTORM WAS OCCURRING SOUTHWEST OF ARDMORE OKLAHOMA. MOVEMENT WAS NORTHEAST AT 20 MPH. THE SYNOPTIC SITUATION CONTINUES TO IMPLY A HIGH PROBABILITY OF THUNDERSTORM DEVELOPMENT TONIGHT IN THIS SECTION OF NORTH CENTRAL TEXAS. BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS IN THE NEXT 12 HOURS.
Special weather statement, Apr 12, 6:53 PM CDT, 14 minutes before
TXZ020-019-130050- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 650 PM CDT FRI APR 12 1991 ...TORNADO WATCH IS IN EFFECT UNTIL 900 PM CDT FOR THE FOLLOWING NORTH CENTRAL TEXAS COUNTIES HARDEMAN...FOARD...KNOX...WILBARGER...BAYLOR... WICHITA AND COTTON COUNTY OF OKLAHOMA... ...TORNADO WATCH IS IN EFFECT UNTIL 1000 PM CDT FOR THE FOLLOWING NORTH CENTRAL TEXAS COUNTIES CLAY...MONTAGUE...JACK...ARCHER AND YOUNG... AT 650 PM RADAR SHOWED A POSSIBLE THUNDERSTORM DEVELOPING IN SOUTHERN CLAY COUNTY SOUTH OF BUFFALO SPRINGS. MOVEMENT WAS NORTH AT 20 MPH. ELSEWHERE..SEVERE THUNDERSTORMS WERE IN PROGRESS SOUTH OF FORT WORTH IN JOHNSON COUNTY AND IN OKLAHOMA SOUTHEAST OF GAGE. THUNDERSHOWERS WERE ALSO AROUND THE ARDMORE VICINITY. MOVEMENT OF SEVERE STORM SOUTH OF FORT WORTH TO THE EAST AT 15 MPH. THE ARDMORE THUNDERSHOWERS AND NORTHWEST OKLAHOMA THUNDERSTORMS WAS TOA THE NORTHEAST AT 25 MPH. THE SYNOPTIC SITUATION CONTINUES TO IMPLY A HIGH PROBABILITY OF THUNDERSTORM DEVELOPMENT TONIGHT IN THIS SECTION OF NORTH CENTRAL TEXAS. BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS IN THE NEXT 12 HOURS.
Local storm report, Apr 12, 7:03 PM CDT, 4 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
702 PM CDT FRI APR 12 1991
TIME(CDT) COUNTY REPORT
700 PM KINGFISHER HAIL UP TO GOLF BALL SIZE 14 MILES EAST
OF HENNESSEY...FROM COUNTY CIVIL DEFENSE.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 9:20 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 40 min |
| Apr 12, 9:27 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Major | 48 min |
| Apr 12, 9:42 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 48 min |
| Apr 12, 10:28 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 62 min |
| Apr 12, 11:05 PM CDT | Severe Thunderstorm Warning | OUN | Major, Woods, Woodward | 55 min |
| Apr 12, 11:55 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Dewey, Major, Woods | 65 min |
| Apr 13, 12:06 AM CDT | Tornado Warning | OUN | Woods | 39 min |
| Apr 13, 12:15 AM CDT | Severe Thunderstorm Warning | OUN | Custer, Washita | 45 min |
| Apr 13, 12:55 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Blaine, Dewey, Major, Woods | 65 min |
| Apr 13, 12:55 AM CDT | Severe Thunderstorm Warning | OUN | Custer | 65 min |
| Apr 13, 1:55 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Major | 47 min |
| Apr 13, 1:55 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher | 47 min |
| Apr 13, 1:55 AM CDT | Severe Thunderstorm Warning | OUN | Garfield, Grant | 65 min |
| Apr 13, 3:00 AM CDT | Severe Thunderstorm Warning | OUN | Kay | 60 min |
| Apr 13, 8:18 AM CDT | Severe Thunderstorm Warning | OUN | Choctaw, Pushmataha | 42 min |
| Apr 13, 8:57 AM CDT | Severe Thunderstorm Warning | OUN | Pushmataha | 63 min |
| Apr 13, 11:30 AM CDT | Severe Thunderstorm Warning | OUN | Pushmataha | 45 min |
| Apr 13, 12:15 PM CDT | Flash Flood Warning | OUN | Choctaw, Pushmataha | 3 hr |
| Apr 13, 3:05 PM CDT | Flash Flood Warning | OUN | Choctaw, Pushmataha | 3 hr |
Nearby
Tornado Warnings in Oklahoma, 1991Every tornado warning in 1991Tornadoes in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.