Alert archive / Oklahoma / Flash Flood Warnings in 1990
Flash Flood Warning 15, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at Apr 25, 1990, 6:28 PM CDT for Bryan County, Oklahoma. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Apr 25, 1990, 6:28 PM CDT (23:28 UTC)
- Expired
- Apr 25, 1990, 9:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County Bryan County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.5 hours before the alert went out and 175 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
- 250 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 640 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOKC 252332 FFWOKC OKC013-260230- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 628 PM CDT WED APR 25 1990 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 930 PM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN SOUTHEAST OKLAHOMA ...BRYAN COUNTY AT 628 PM CDT THE BRYAN COUNTY CIVIL DEFENSE DIRECTOR REPORTED STREET FLOODING IN AND AROUND DURANT. WEATHER SERVICE RADAR INDICATED THAT HEAVY RAINFALL HAD BEEN OCCURING OVER BRYAN COUNTY FOR THE PAST FEW HOURS. ADDITIONAL THUNDERSTORMS WITH HEAVY RAINFALL WILL BE MOVING OVER THE COUNTY IN THE NEXT HOUR. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. THE WATER MAY ALSO CONCEAL SPOTS WHERE THE ROAD IS WASHED AWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
What forecasters said that day
The local office's own words before this flash flood 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 25, 2:17 PM CDT, 4 hours 11 minutes before
TXZ020-019-252015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 217 PM CDT WED APR 25 1990 ...TORNADO WATCH FOR THE EXTREME SOUTHEASTERN PORTION OF MONTAGUE COUNTY AND EXTREME SOUTHEASTERN PORTION OF JACK COUNTY OF NORTH CENTRAL TEXAS UNTIL 9 PM CDT THIS WEDNESDAY EVENING... AT 2PM CDT AREA RADARS INDICATED NUMEROUS THUNDERSTORMS AND RAINSHOWERS...MANY VERY STRONG..WERE ACROSS NORTH CENTRAL TEXAS EXTENDING INTO THE HILL COUNTRY. THE STRONGEST THUNDERSTORMS WERE IN A 20 MILE WIDE BAND FROM NEAR BOWIE SOUTH TO MINERAL WELLS AND ON SOUTHWARD TO COMANCHE. MOVEMENT WAS EAST AT 25 MPH. REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 25, 3:00 PM CDT, 3 hours 28 minutes before
TXZ020-019-252130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 300 PM CDT WED APR 25 1990 ...TORNADO WATCH FOR THE EXTREME SOUTHEASTERN PORTION OF MONTAGUE COUNTY AND EXTREME SOUTHEASTERN PORTION OF JACK COUNTY OF NORTH CENTRAL TEXAS UNTIL 9 PM CDT THIS WEDNESDAY EVENING... ...FLASH FLOOD WATCH FOR THE REMAINDER OF TODAY AND TONIGHT FOR THE EXTREME SOUTHEAST PORTIONS OF JACK AND MONTAGUE COUNTIES... AT 245 PM CDT AREA RADARS INDICATED NUMEROUS THUNDERSTORMS WITH VERY HEAVY RAINSHOWERS IN A NARROW BAND FROM DECATUR IN WISE COUNTY TO STEPHENVILLE IN ERATH COUNTY. MOVEMENT WAS EAST AT 25 MPH. REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 25, 4:02 PM CDT, 2 hours 26 minutes before
TXZ020-019-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 400 PM CDT WED APR 25 1990 THE TORNADO WATCH AND FLASH FLOOD WATCH FOR JACK AND MONTAGUE COUNTIES HAS BEEN CANCELLED... AT 400 PM CDT...THE LINE OF POTENTUALLY SEVERE THUNDERSTORMS PRODUCING LOCALLY VERY HEAVY RAINFALL HAD MOVED EAST OF JACK AND MONTAGUE COUNTIES. MOVEMENT WAS EAST AT 25 MPH. THE STRONGEST THUNDERSTORMS WERE OCCURRING FROM NEAR GAINSVILLE TO DECAUTER TO WEATHERFORD TEXAS. NO SEVERE WEATHER WAS REPORTED TO THIS OFFICE WITH THE PASSAGE OF THIS SQUALL LINE. HOWEVER...LOCALLY VERY HEAVY RAINFALL WAS OBSERVED AT BOWIE. NINE TENTHS OF AN INCH OF RAIN WAS MEASURED BUT NO FLOODING PROBLEMS@ RESULTED. SHOWERS AND THUNDERSTORMS WERE FORECAST TO REDEVELOP LATTER TONIGHT ONCE AGAIN ACROSS THIS SECTION OF NORTH CENTRAL TEXAS.
Special weather statement, Apr 25, 5:20 PM CDT, 1 hour 8 minutes before
TXZ020-019-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 515 PM CDT WED APR 25 1990 ...THUNDERSTORM FORM SOUTH OF WICHITA FALLS... THE WIICHITA FALLS RADAR SHOWED AN AREA OF THUNDERSTORMS AND RAINSHOWERS OCCURRING OVER PORTIONS OF YOUNG...ARCHER AND CLAY COUNTIES. MOVEMENT WAS NORTHEAST AT 25 MPH. THE STRONGEST THUNDERSTORMS WERE OCCURRING MOSTLY OVER YOUNG COUNTY. NO SEVERE WEATHER WAS INDICATED BUT LATE AFTERNOON COMMUTERS WILL LIKELY EXPERIENCE BRIEF BUT VERY HEAVY RAINFALL...FREQUENT LIGHTNING... AND SMALL HAIL NEAR THE HEAVIEST THUNDERSTORMS. IF PRESENT TRENDS CONTINUE...THIS THUNDERSTORM CLUSTER WILL BE IN THE WICHITA FALLS VICINITY BY 6PM CDT. ELSEWHERE...A LINE OF THUNDERSTORMS PRODUCING SEVERE WEATHER CONDITIONS WAS OCCURRING GENERALLY ALONG AND EAST OF A GAINSVILLE...DECAUTER... MINERAL WELLS LINE. MOVEMENT WAS NORTHEAST.
Special weather statement, Apr 25, 5:47 PM CDT, 41 minutes before
TXZ020-019-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 550 PM CDT WED APR 25 1990 ...THUNDERSTORM INTENSIFY SOUTH OF WICHITA FALLS... THE WICHITA FALLS RADAR SHOWED AN AREA OF INTENSIFING THUNDERSTORMS OCCURRING OVER SOUTHERN ARCHER...CLAY AND ACROSS MUCH OF YOUNG COUNTY. MOVEMENT WAS NORTHEAST AT 30 MPH. THE STRONGEST THUNDERSTORMS WERE NEAR WINDTHORST...NORTH AND EAST OF OLNEY AND APPROACHING YOUNG COUNTY FROM THE SOUTH. PRESONS IN AND NEAR THIS ACTIVITY WILL LIKELY EXPERIENCE HAIL UP TO MARBLE SIZE...VERY HEAVY RAINFALL...GUSTY WIND TO 50 MPH AND OF COURSE FREQUENT LIGHTNING. IF PRESENT TRENDS CONTINUE...THIS THUNDERSTORM CLUSTER WILL BE IN THE WICHITA FALLS VICINITY BETWEEN 6 AND 7 PM CDT. EARLIER...PEA SIZE HAIL COVERED THE GROUND IN NORTHEAST YOUNG COUNTY NEAR THE COMMUNITY OF MARKLEY.
Special weather statement, Apr 25, 6:26 PM CDT, 2 minutes before
TXZ020-019-260130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 626 PM CDT WED APR 25 1990 THUNDERSTORM WITH HEAVY RAIN AND SOME PEA TO OCCASIONAL MARBLE SIZE HAIL MOVING THROUGH THE CITY. AT 625 PM RADAR SHOWED A THUNDERSTORM IN THE SOUTHERN SECTIONS OF THE CITY MOVING NORTH NORTHEAST AT 30 MPH. SEVERAL REPORTS OF HEAQVY RAIN AND SMALL HAIL HAVE BEEN REPORTED WITH THIS STORM. SOME ADDITIONAL STREET FLOODING MAY OCCUR AS THIS THUNDERSTORM COMPLEX MOVES ACROSS THE CITY. OTHER STORMS EXTENDED FROM NEAR GRAHAM TO HENRIETTA AND IN SOUTHERN JACK COUNTY. HENRIETTA REPORTED PEA SIZE HAIL AT 605 PM. MORE INTENSE STORMS WERE NORTH OF THE DALLAS FORT WORTH METROPLEX. MOVEMENT WAS NORTH NORTHEAST AT 30 MPH. A TORNADO WATCH IS IN EFFECT FOR PARTS OF NORTH CENTRAL TEXAS EAST OF THE LOCAL AREA. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO STRIKE WITH LITTLE ADVANCE NOTICE. BE PREPARED TO TAKE PRECAUTIONS IF S9EVERE WEATHER IS REPORTED.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 9:31 PM CDT | Severe Thunderstorm Warning | OUN | Ellis | 59 min |
| Apr 24, 9:58 PM CDT | Tornado Warning | OUN | Ellis | 32 min |
| Apr 24, 10:29 PM CDT | Tornado Warning | OUN | Ellis | 31 min |
| Apr 24, 10:58 PM CDT | Tornado Warning | OUN | Ellis | 32 min |
| Apr 24, 11:27 PM CDT | Tornado Warning | OUN | Ellis, Harper | 33 min |
| Apr 24, 11:33 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 42 min |
| Apr 24, 11:58 PM CDT | Tornado Warning | OUN | Harper | 32 min |
| Apr 25, 12:09 AM CDT | Severe Thunderstorm Warning | OUN | Ellis | 51 min |
| Apr 25, 12:14 AM CDT | Severe Thunderstorm Warning | OUN | Woodward | 46 min |
| Apr 25, 12:21 AM CDT | Tornado Warning | OUN | Ellis | 24 min |
| Apr 25, 12:27 AM CDT | Severe Thunderstorm Warning | OUN | Woods | 63 min |
| Apr 25, 12:39 AM CDT | Severe Thunderstorm Warning | OUN | Harper | 36 min |
| Apr 25, 1:36 AM CDT | Severe Thunderstorm Warning | OUN | Ellis | 54 min |
| Apr 25, 12:33 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, McClain | 42 min |
| Apr 25, 12:47 PM CDT | Severe Thunderstorm Warning | OUN | Carter | 43 min |
| Apr 25, 6:44 PM CDT | Severe Thunderstorm Warning | OUN | Cotton | 46 min |
| Apr 25, 6:51 PM CDT | Severe Thunderstorm Warning | OUN | Marshall | 39 min |
Nearby
Flash Flood Warnings in Oklahoma, 1990Every flash flood warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.