Alert archive / Oklahoma / Flash Flood Warnings in 1990
Flash Flood Warning 49, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at May 31, 1990, 10:47 PM CDT for Greer County, Jackson County, Oklahoma. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- May 31, 1990, 10:47 PM CDT (03:47 UTC)
- Expired
- Jun 1, 1990, 1:15 AM CDT
- In force
- 2 hr
- Issued by
- NWS Norman, OK
- Area
- Whole counties
Counties Greer County, OK, Jackson 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 00:00Z, 3.8 hours before the alert went out and 197 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOKC 010348 FFWOKC OKC055-065-010615- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1047 PM CDT THU MAY 31 1990 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 115 AM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN SOUTHWEST OKLAHOMA ...SOUTHERN GREER COUNTY...JACKSON COUNTY AT 1047 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL NEAR BRINKMMAN...4 MILES NORTH OF DUKE...AND 3 MILES WEST OF BLAIR MOVING TOWARD THE SOUTHEAST AT 10 TO 15 MPH. RAINFALL OF 3 1/2 INCHES BETWEEN 900 PM AND 1030 PM CDT WAS REPORTED 6 MILES SOUTH AND 1 MILE WEST OF MANGUM. MUCH OF SOUTHWESTERN OKLAHOMA RECEIVED VERY HEAVY RAINFALL TUESDAY...AND MOST OF THE RAINFALL THIS EVENING WILL RUN OFF VERY QUICKLY. PERSONS WITH LIVESTOCK OR PROPERTY IN LOW LYING OR FLASH FLOOD PRONE AREAS SHOULD TAKE ACTION IMMEDIATELY TO AVOID DAMAGE FROM HIGH WATER. MANY ROADS IN THE FLASH FLOOD WATCH AREA...PARTICULARLY SECONDARY ROADS...MOST LIKELY ARE BLOCKED OR WILL BECOME BLOCKED BY HIGH WATER. A FLASH FLOOD WARNING CONTINUES IN EFFECT UNTIL 1 AM FOR SOUTHERN BECKHAM...NORTHERN GREER...AND HARMON COUNTIES. ALTHOUGH THE HEAVIEST RAIN HAS MOVED OUT OF THESE AREAS...RUNOFF FROM RAINS EARLIER THIS EVENING LIKELY WILL CONTINUE TO PRODUCE FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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, May 31, 7:36 PM CDT, 3 hours 11 minutes before
OKZALL-010200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 730 PM CDT THU MAY 31 1990 ...INTENSE THUNDERSTORMS OVER THE TEXAS PANHANDLE ARE MOVING TOWARD OKLAHOMA... ...TORNADO WATCH NUMBER 356 REMAINS IN EFFECT UNTIL 9 PM FOR PARTS OF WESTERN OKLAHOMA AND THE EASTERN OKLAHOMA PANHANDLE... AT 730 PM CDT RADAR INDICATED TWO AREAS OF INTENSE THUNDERSTORMS OVER THE TEXAS PANHANDLE. THE FIRST STORM...WHICH HAS HAD A HISTORY OF PRODUCING TORNADOES...WAS OVER WESTERN OCHILTREE COUNTY AND WAS MOVING EASTWARD AT 25 MILES PER HOUR. IF THIS STORM HOLDS TOGETHER...IT WILL MOVE INTO WESTERN ELLIS COUNTY AROUND 930 PM CDT. ANOTHER AREA OF INTENSE THUNDERSTORMS WAS OVER EASTERN DONLEY AND WESTERN COLLINGSWORTH COUNTIES OF THE EASTERN TEXAS PANHANDLE. THESE STORMS WERE MOVING TOWARD THE NORTHEAST AT 20 MILES PER HOUR AND LIKELY WILL MOVE INTO WESTERN BECKHAM COUNTY BETWEEN 830 AND 900 PM CDT. OTHER STORMS WERE BUILDING RAPIDLY OVER SOUTHERN COMANCHE COUNTY SOUTH OF CACHE. THE ATMOSPHERE OVER OKLAHOMA IS EXTREMELY UNSTABLE THIS EVENING...AND THE WIND PROFILE REMAINS FAVORABLE FOR TORNADIC THUNDERSTORMS OVER THE TEXAS PANHANDLE AND NORTHWESTERN OKLAHOMA THIS EVENING. OVER MOST OF THE REMAINDER OF OKLAHOMA...THE MAIN THREAT WILL BE LARGE HAIL AND HEAVY RAINFALL. THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THE THUNDERSTORMS THROUGHOUT THE EVENING. STAY TUNED TO NOAA WEATHER RADIO OR TO COMMERCIAL RADIO OR TELEVISION FOR LATER UPDATES AND POSSIBLE WARNINGS.
Special weather statement, May 31, 8:01 PM CDT, 2 hours 46 minutes before
OKZ014-021-010200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 800 PM CDT THU MAY 31 1990 HEAVY THUNDERSTORMS DEVELOPING OVER HARMNON AND BECKHAM COUNTIES... TORNADO WATCH NUMBER 356 IS IN EFFECT UNTIL 9 PM FOR PORTIONS OF WESTERN OKLAHOMA AND THE EASTERN OKLAHOMA PANHANDLE. AT 800 PM RADAR INDICATED RAPIDLY INTESIFYING THUNDERSTORMS OVER SOUTHERN BECKHAM AND HARMON COUNTIES. THE STORMS EXTENDED FROM 5 MILES SOUTHWEST OF ERICK SOUTHWARD TO 5 MILES SOUTHEAST OF VINSON. THE STORMS WERE MOVING EAST NORTHEAST AT 20 MPH.
Special weather statement, May 31, 8:21 PM CDT, 2 hours 26 minutes before
TXZ020-019-010300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 820 PM CDT THU MAY 31 1990 ...TORNADO WATCH IN EFFECT UNTIL 900 PM CDT FOR FOARD AND HARDEMAN COUNTIES... AT 815 PM WICHITA FALLS RADAR SHOWED STRONG THUNDERSTORMS OVER SOUTHERN YOUNG COUNTY AND OVER SOUTHERN BAYLOR COUNTY. THE THUNDERSTORM OVER YOUNG COUNTY WAS MOVING SLOWLY TO THE NORTH AND WILL PROBABLY BE IN THE GRAHAM AREA BY 830 PM. THE STORM OVER BAYLOR COUNTY WAS MOVING TOWARD SEYMOUR AND SHOULD SOON BE IN THE SEYMOUR AREA. SMALL HAIL AND GUSTY WINDS WILL PROBABLY OCCUR WITH THESE THUNDERSTORMS. OTHER THUNDERSTORMS WERE LOCATED OVER SOUTHWESTERN OKLAHOMA AND IN THE EASTERN TEXAS PANHANDLE AND EXTENDED INTO THE SOUTH PLAINS. THE STORMS IN THE PANHANDLE WERE MOVING TO THE NORTHEAST AT 25 MPH.
Special weather statement, May 31, 9:16 PM CDT, 1 hour 31 minutes before
OKZ021-014-010230- SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 913 PM CDT THU MAY 31 1990 ...TORNADO WARNING FOR GREER COUNTY UNTIL 930 PM... ...SEVERE THUNDERSTORM WARNING FOR BECKHAM COUNTY UNTIL 930 PM... ...SEVERE THUNDERSTORM WARNING FOR HARMON COUNTY UNTIL 1000 PM... AT 913 RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO IN WESTERN GREER COUNTY 5 MILES NORTH OF REED. MOVEMENT WAS EAST-SOUTHEAST AT 15 MPH. ANOTHER SEVERE THUNDERSTORM WAS ALONG THE BECKHAM-GREER COUNTY LINE SOUTHEAST OF ERICK. MOVING EAST AT 20 MPH. A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL AND STRONG WINDS WAS ALONG THE TEXAS BORDER WEST OF HOLLIS MOVING EAST AT 20 MPH. SEVERE THUNDERSTORMS MAY PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
Special weather statement, May 31, 9:18 PM CDT, 1 hour 29 minutes before
TXZ020-019-010330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 915 PM CDT THU MAY 31 1990 THE TORNADO WATCH FOR FOARD AND HARDEMAN COUNTIES HAS BEEN EXTENDED UNTIL 1 AM AND NOW INCLUDES WILBARGER. AT 915 PM WICHITA FALLS RADAR SHOWED THUNDERSTORMS YOUNG COUNTY AND NORTH OF SEYMOUR. MOVEMENT WAS SLOWLY NORTH. OTHER MORE INTENSE THUNDERSTORMS WERE FROM NORTH OF ALTUS TO JUST WEST OT TRUSCOTT. THE STORM ENTERING NORTHWEST FOARD COUNTY IS VERY STRONG AND LIKELY CONTAINS SMALL HAIL AND GUSTY WINDS. MOVEMENT WAS NORTHEAST AT 25 MPH. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE STORMS AND POSSIBLE TORNADOES TO DEVELOP QUICKLY. STAY ALERT...BUT BE PREPARE$D TO MOVE TO A PLACE OF SAFTEY.
Special weather statement, May 31, 9:22 PM CDT, 1 hour 25 minutes before
TXZ020-019-010330- SPECIAL WEATHER STATEMENT...CORRECT 2ND PARAGRAPH NATIONAL WEATHER SERVICE WICHITA FALLS TX 915 PM CDT THU MAY 31 1990 THE TORNADO WATCH FOR FOARD AND HARDEMAN COUNTIES HAS BEEN EXTENDED UNTIL 1 AM AND NOW INCLUDES WILBARGER. AT 915 PM WICHITA FALLS RADAR SHOWED THUNDERSTORMS OVER YOUNG COUNTY AND NORTH OF SEYMOUR. MOVEMENT WAS SLOWLY NORTH. OTHER MORE INTENSE THUNDERSTORMS WERE FROM NORTH OF ALTUS TO JUST WEST OFT TRUSCOTT. THE STORM ENTERING NORTHWEST FOARD COUNTY IS VERY STRONG AND LIKELY CONTAINS SMALL HAIL AND GUSTY WINDS. MOVEMENT WAS NORTHEAST AT 25 MPH. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE STORMS AND POSSIBLE TORNADOES TO DEVELOP QU-ICKLY. STAY ALERT...BUT BE PREPARED TO MOVE TO A PLACE OF SAFTEY.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:23 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Greer | 67 min |
| May 31, 8:41 PM CDT | Tornado Warning | OUN | Greer | 49 min |
| May 31, 8:59 PM CDT | Severe Thunderstorm Warning | OUN | Harmon | 61 min |
| May 31, 9:10 PM CDT | Flash Flood Warning | OUN | Beckham, Greer, Harmon | 3 hr |
| May 31, 9:21 PM CDT | Tornado Warning | OUN | Harmon | 54 min |
| May 31, 9:26 PM CDT | Severe Thunderstorm Warning | OUN | Greer | 64 min |
| May 31, 9:57 PM CDT | Severe Thunderstorm Warning | OUN | Jackson | 63 min |
| May 31, 11:27 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 63 min |
| Jun 1, 8:55 AM CDT | Severe Thunderstorm Warning | OUN | Greer, Jackson, Kiowa | 65 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.