Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 252, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 28, 1991, 2:59 PM CDT for Coal County, Hughes County, Oklahoma. It was in force for 41 min. 2 reports 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 28, 1991, 2:59 PM CDT (19:59 UTC)
- Expired
- Apr 28, 1991, 3:40 PM CDT
- In force
- 41 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
Counties Coal County, OK, Hughes County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 28, 3:30 PM CDT | Hail 0.75 | Coal, OK | |
| Apr 28, 3:30 PM CDT | Thunderstorm Wind 0 | Hughes, 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 12:00Z, 8.0 hours before the alert went out and 112 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
- 40 J/kg
- Mixed-layer CIN
- -277 J/kg
- Mixed-layer LCL
- 1298 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOKC 282000 SVROKC OKC029-063-282100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 259 PM CDT SUN APR 28 1991 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 PM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN SOUTHEAST OKLAHOMA ...COAL COUNTY...HUGHES COUNTY AT 259 PM A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM LEHIGH TO GERTY AND WERE MOVING TO THE NORTHEAST AT 40 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 28, 12:16 PM CDT, 2 hours 43 minutes before
TXZ020-019-270445- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 1215 PM CDT SUN APR 28 1991 ...TORNADO WATCH FOR CLAY..JACK AND MONTAGUE COUNTY... AT 1210 PM RADAR INDICATED SEVERE THUNDERSTORMS JUST TO THE SOUTHWEST OF THE FORT WORTH AREA IN THE COUNTIES OF HAMILTON AND BOSQUE. TORNADO WARNINGS HAVE BEEN ISSUED FOR NORTHER HAMILTON AND BOSQUE COUNTY UNTIL 1245 PM. A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR JOHNSON AND TARANT COUNTY UNTIL 115 PM. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 45 MPH. THERE ARE NO RAIN SHOWERS OR THUNDERSTORMS AT PRESENT IN THE COUNTIES OF CLAY..JACK OR MONTAGUE WHICH ARE UNDER A TORNADO WATCH UNTIL 6 PM. PERSONS IN AND NEAR THE WATCH AREA SHOULD CONTINUE TO MONITOR NEWS MEDIA FOR FURTHUR DEVELOPMENT.
Special weather statement, Apr 28, 12:55 PM CDT, 2 hours 4 minutes before
OKZ004>021-281200- OKLAHOMA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1255 PM CDT SUN APR 28 1991 THIS THUNDERSTORM OUTLOOK IS VALID ONLY FOR OKLAHOMA ZONES 4 THROUGH 21. A THUNDERSTORM OUTLOOK FOR THE OKLAHOMA AND TEXAS PANHANDLES IS AVAILABLE UNDER LBBSPSAMA...AND A THUNDERSTORM OUTLOOK FOR EASTERN OKLAHOMA IS AVAILABLE UNDER OKCSPSTUL. SEVERE THUNDERSTORMS ARE EXPECTED OVER PARTS OF WESTERN OKLAHOMA THIS AFTERNOON AND OVER CENTRAL OKLAHOMA THIS AFTERNOON AND THIS EVENING. THE SEVERE THREAT IS EAST OF A FREDERICK TO GAGE LINE AND THE SEVERE THREAT IS ESPECIALLY SIGNIFICANT EAST OF A DUNCAN TO ENID LINE. EARLY THIS AFTERNOON A STRONG UPPER LEVEL LOW PRESSURE SYSTEM WAS OVER THE EXTREME WESTERN OKLAHOMA PANHANDLE. SURFACE LOW PRESSURE WAS CENTERED IN SOUTHWEST KANSAS JUST NORTH OF LIBERAL. FROM THE SURFACE LOW A DRY LINE EXTENDED SOUTHEAST THROUGH GAGE AND ALTUS INTO NORTHCENTRAL TEXAS. WARM..MOIST AND UNSTABLE AIR IS FEEDING NORTHWARD EAST OF THE FRONT. AS THE LOW PRESURE SYSTEM AND DRY LINE MOVE EAST THIS AFTERNOON THUNDERSTORMS ARE EXPECTED TO FORM ALONG THE FRONT. CONDITIONS ARE SUCH THAT THE THUNDERSTORMS WILL QUICKLY BECOME SEVERE WITH THE POSSIBLILTY OF DAMAGING TORNADOES..ESPECIALLY OVER CENTRAL OKLAHOMA. THE FRONT AND THUNDERSTORMS WILL MOVE EAST OF WESTERN OKLAHOMA LATER THIS AFTERNOON AND EAST OF CENTRAL OKLAHOMA LATER THIS EVENING. SPOTTER NETWORKS AND CIVIL DEFENSE AGENCIES SHOUFLD REMAIN ALERT FOR RAPID THUNDERSTORM DEVELOPMENT IN THE THREAT AREA. WE ADVISE EVERYONE IN THE THREAT AREA TO REMAIN ALERT AND STAY TUNED FOR LATER INFORAMTION ON THIS DANGEROUS WEATHER SITUATION.
Special weather statement, Apr 28, 1:12 PM CDT, 1 hour 47 minutes before
TXZ020-019-270445- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 110 PM CDT SUN APR 28 1991 ...TORNADO WATCH FOR CLAY..JACK AND MONTAGUE COUNTY UNTIL 6PM... AT 105 PM RADAR INDICATED STRONG THUNDERSTORMS FROM 20 MILES SOUTH OF DENISON TEXAS SOUTHWESTWARD THROUGH THE FORT WORTH AREA. A SEVERE THUNDERSTORMS WARNING HAS BEEN ISSURED FOR DENTON COUNTY UNTIL 2 PM. A FLASH FLOOD WARNING HAS BEEN ISSUED FOR TARRANT COUNTY UNTIL 3 PM DUE TO THUNDERSTORMS COUNTIUING TO MOVE THROUGH THE COUNTY. A LIGHT RAIN SHOWER OR POSSIBLE THUNDERSTORM WAS LOCATED IN EXTREME MONTAGUE COUNTY BUT WAS NOT OF A SEVERE NATURE. PERSONS IN AND NEAR THE WATCH AREA SHOULD CONTINUE TO MONITOR N1EWS MEDIA FOR FURTHUR DEVELOPMENT.
Special weather statement, Apr 28, 1:15 PM CDT, 1 hour 44 minutes before
OKZ004>021-291200- OKLAHOMA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1255 PM CDT SUN APR 28 1991 THIS THUNDERSTORM OUTLOOK IS VALID ONLY FOR OKLAHOMA ZONES 4 THROUGH 21. A THUNDERSTORM OUTLOOK FOR THE OKLAHOMA AND TEXAS PANHANDLES IS AVAILABLE UNDER LBBSPSAMA...AND A THUNDERSTORM OUTLOOK FOR EASTERN OKLAHOMA IS AVAILABLE UNDER OKCSPSTUL. SEVERE THUNDERSTORMS ARE EXPECTED OVER PARTS OF WESTERN OKLAHOMA THIS AFTERNOON AND OVER CENTRAL OKLAHOMA THIS AFTERNOON AND THIS EVENING. THE SEVERE THREAT IS EAST OF A FREDERICK TO GAGE LINE AND THE SEVERE THREAT IS ESPECIALLY SIGNIFICANT EAST OF A DUNCAN TO ENID LINE. EARLY THIS AFTERNOON A STRONG UPPER LEVEL LOW PRESSURE SYSTEM WAS OVER THE EXTREME WESTERN OKLAHOMA PANHANDLE. SURFACE LOW PRESSURE WAS CENTERED IN SOUTHWEST KANSAS JUST NORTH OF LIBERAL. FROM THE SURFACE LOW A DRY LINE EXTENDED SOUTHEAST THROUGH GAGE AND ALTUS INTO NORTHCENTRAL TEXAS. WARM..MOIST AND UNSTABLE AIR IS FEEDING NORTHWARD EAST OF THE FRONT. AS THE LOW PRESURE SYSTEM AND DRY LINE MOVE EAST THIS AFTERNOON THUNDERSTORMS ARE EXPECTED TO FORM ALONG THE FRONT. CONDITIONS ARE SUCH THAT THE THUNDERSTORMS WILL QUICKLY BECOME SEVERE WITH THE POSSIBLILTY OF DAMAGING TORNADOES..ESPECIALLY OVER CENTRAL OKLAHOMA. THE FRONT AND THUNDERSTORMS WILL MOVE EAST OF WESTERN OKLAHOMA LATER THIS AFTERNOON AND EAST OF CENTRAL OKLAHOMA LATER THIS EVENING. SPOTTER NETWORKS AND CIVIL DEFENSE AGENCIES SHOUxLD REMAIN ALERT FOR RAPID THUNDERSTORM DEVELOPMENT IN THE THREAT AREA. WE ADVISE EVERYONE IN THE THREAT AREA TO REMAIN ALERT AND STAY TUNED FOR LATER INFORAMTION ON THIS DANGEROUS WEATHER SITUATION.
Special weather statement, Apr 28, 2:18 PM CDT, 41 minutes before
TXZ020-019-270445- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 215 PM CDT SUN APR 28 1991 ...TORNADO WATCH FOR CLAY..JACK AND MONTAGUE COUNTY UNTIL 6PM... AT 210 PM RADAR INDICATED STRONG THUNDERSTORMS ALONG AND EAST OF A LINE FROM JUST WEST OF ARDMORE OKLAHOMA TO JUST WEST OF FORT WORTH TO 50 WEST OF WACO. THESE STORMS WERE MOVING TO THE NORTHEAST AT 40 MPH. . A TORNADO WARNING HAS BEEN ISSUED FOR EASTERN DALLAS COUNTY AND NORTHERN ELLIS COUNTY. RADAR INDICATED A POSSIBLE TORNADO BETWEEN HUTCHINS AND PALMER MOVING TO THE EAST NORTHEAST AT 40 MPH. LIGHT RAIN WAS BEGINNING TO FALL OUT OF MIDDLE CLOUDS HERE IN THE WICHITA FALLS AREA AND OVER SOUTHERN OKLAHOMA. HOWEVER, MOST WAS NOT REACHING THE GROUND. PERSONS IN AND NEAR THE WATCH AREA SHOULD CONTINUE TO MONITOR NEWS MEDIA FOR FURTHUR DEVELOPMENT.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 1:45 PM CDT | Severe Thunderstorm Warning | OUN | Choctaw | 45 min |
| Apr 28, 1:50 PM CDT | Severe Thunderstorm Warning | OUN | Bryan, Marshall | 55 min |
| Apr 28, 2:14 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Johnston | 61 min |
| Apr 28, 2:18 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Pushmataha | 42 min |
| Apr 28, 2:38 PM CDT | Severe Thunderstorm Warning | OUN | Seminole | 52 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1991Every severe thunderstorm warning 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.