Alert archive / Oklahoma / Flash Flood Warnings in 1990
Flash Flood Warning 23, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at Apr 26, 1990, 3:44 AM CDT for Love County, Oklahoma. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Apr 26, 1990, 3:44 AM CDT (08:44 UTC)
- Expired
- Apr 26, 1990, 6:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County Love 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, 8.7 hours before the alert went out and 142 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
- 25 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 972 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 181 m²/s²
- 0-3 km storm-relative helicity
- 203 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 260842 FFWOKC OKC019-085-099-123-261145- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 344 AM CDT THU APR 26 1990 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 645 AM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN SOUTHEAST OKLAHOMA ...CARTER COUNTY...LOVE COUNTY...MURRAY COUNTY...PONTOTOC COUNTY REPORTS OF FLASH FLOODING CONTINUE FROM CARTER...LOVE...MURRAY... AND PONTOTOC COUNTIES. VERY HEAVY RAINFALL FROM YESTERDAY EVENING AND EARLIER THIS MORNING HAS RESULTED IN FLASH FLOODING ACROSS THE WARNED AREA. LIGHT TO MODERATE RAIN...WITH EMBEDDED THUNDERSTORMS... CONTINUES ACROSS SOUTHERN OKLAHOMA. THE RAINFALL IS EXPECTED TO PERSIST FOR AT LEAST THE NEXT FEW HOURS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP 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
Local storm report, Apr 25, 10:44 PM CDT, 5 hours before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1044 PM CDT WED APR 25 1990 TIME(CDT) COUNTY EVENT 710PM COTTON NICKEL SIZE HAIL AT WALTERS 840PM OKLAHOMA DIME SIZE HAIL 1 MILE SOUTH OF HARRAH
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 7:18 PM CDT | Severe Thunderstorm Warning | OUN | Comanche | 42 min |
| Apr 25, 7:41 PM CDT | Severe Thunderstorm Warning | OUN | Grady | 49 min |
| Apr 25, 7:56 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland | 49 min |
| Apr 25, 8:19 PM CDT | Tornado Warning | OUN | Carter | 26 min |
| Apr 25, 8:29 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 46 min |
| Apr 25, 8:45 PM CDT | Tornado Warning | OUN | Carter | 45 min |
| Apr 25, 10:13 PM CDT | Flash Flood Warning | OUN | Garvin, Murray | 2 hr |
| Apr 25, 11:37 PM CDT | Flash Flood Warning | OUN | Pontotoc, Pottawatomie, Seminole | 4 hr |
| Apr 26, 12:13 AM CDT | Flash Flood Warning | OUN | Carter, Johnston, Marshall, Murray | 4 hr |
| Apr 26, 12:13 AM CDT | Flash Flood Warning | OUN | Love | 4 hr |
| Apr 26, 12:13 AM CDT | Flash Flood Warning | OUN | Garvin | 4 hr |
| Apr 26, 12:13 AM CDT | Flash Flood Warning | OUN | Hughes | 4 hr |
| Apr 26, 3:44 AM CDT | Flash Flood Warning | OUN | Carter, Murray, Pontotoc | 3 hr |
| Apr 26, 8:52 AM CDT | Flash Flood Warning | OUN | Carter, Jefferson, Love | 3 hr |
| Apr 26, 8:52 AM CDT | Flash Flood Warning | OUN | Garvin, Murray, Pontotoc | 3 hr |
| Apr 26, 8:52 AM CDT | Flash Flood Warning | OUN | Stephens | 3 hr |
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.