Alert archive / Oklahoma / Flash Flood Warnings in 1990

Flash Flood Warning 19, NWS Norman, OK

April 26, 1990Love County, Oklahoma

NWS Norman, OK issued this flash flood warning at Apr 26, 1990, 12:13 AM CDT for Love County, Oklahoma. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Apr 26, 1990, 12:13 AM CDT (05:13 UTC)
Expired
Apr 26, 1990, 3:45 AM CDT
In force
4 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, 5.2 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.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 00:00Z on 1990-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 1990-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KOKC 260515
FFWOKC
OKC019-049-063-069-085-095-099-260845-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1213 AM CDT THU APR 26 1990
 
THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  345 AM CDT
FOR THE FOLLOWING OKLAHOMA LOCATIONS...
 
IN SOUTHEAST OKLAHOMA
 
   ...CARTER COUNTY...GARVIN COUNTY...HUGHES COUNTY...JOHNSTON COUNTY
   ...LOVE COUNTY...MARSHALL COUNTY...MURRAY COUNTY
 
AT 1213 AM RADAR INDICATED A LINE OF STRONG THUNDERSTORMS PRODUCING
TORRENTIAL RAINFALL FROM JUST EAST OF SEMINOLE...TO NEAR ADA... TO
SPRINGER...TO MARIETTA. THE LINE OF STORMS WAS 20 MILES WIDE AND
MOVING EAST AT 5 TO 10 MPH. INDIVIDUAL STORMS WITHIN THE LINE WERE
TRACKING NORTHEAST AT 35 MPH. DANGEROUS FLASH FLOODING HAS BEEN
REPORTED FROM THE STORMS WITH RAINFALL AMOUNTS AVERAGING 2 TO 4 INCHES
WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE.
 
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, Apr 25, 6:26 PM CDT, 5 hours 47 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.
Special weather statement, Apr 25, 8:07 PM CDT, 4 hours 6 minutes before
TXZ020-260215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
806 PM CDT WED APR 25 1990

A FLASH FLOOD WARNING IS IN EFFECT FOR YOUNG COUNTY UNTIL 1115 PM CDT.
AT 8PM CDT THE WICHITA FALLS RADAR SHOWED A 10 TO 15 MILE WIDE LINE OF
THUNDERSTORMS GENERALLY ORIENTED NORTH TO SOUTH FROM BETWEEN WICHITA
FALLS AND HENRIETTA TO YOUNG COUNTY. MOVEMENT WAS SLIGHTLY EAST OF
NORTH AT 30 MPH. THE GRAHAM FIRE DEPARTMENT REPORTED 2.21 INCHES OF
RAIN TODAY BUT 1.10 INCHES HAD BEEN OBSERVED IN ABOUT AN HOURS TIME
AAROUND 6 PM THIS EVENING. WATER WAS BEGINNING TO BACK-UP ON SOME CITY
STREETS. ADDITIONAL THUNDERSTORM ACTIVITY TO THE SOUTH WILL AFFECT THE
COUNTY IN THE NEXT SEVERAL HOURS. VARIOUS SIZES OF HAIL WERE REPORTED
IN AND NEAR THE HEAVIEST THUNDERSTORMS.
Local storm report, Apr 25, 8:08 PM CDT, 4 hours 5 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
804 PM CDT WED APR 25 1990

...ADDITIONAL REPORTS FROM TUESDAY NIGHT THE 24TH AND WEDNESDAY
   MORNING THE 25TH...

TIME(CDT)   COUNTY           EVENT
1145 PM     WOODWARD         GOLFBALL HAIL 8SE OF WOODWARD
1202-1217AM WOODWARD         DIME SIZE HAIL FELL FOR 15 MINUTES 7N AND
                             2W OF MOORELAND...ESTIMATED 80 MPH WIND.
100AM       WOODS            QUARTER SIZE HAIL 5NW OF LOOKOUT
100AM       HARPER           DIME SIZE HAIL 13N AND 2E OF SELMAN

...ADDITIOANL DETAILS ON THE TORNADO DAMAGE IN SHATTUCK...
1023-1100(APPROXIMATE) ELLIS COUNTY

   CONTINUOUS DAMAGE FROM 6 MILES SOUTH OF SHATTUCK ALONG ROUTH 283
NORTHWEST TO 3/4 MILE NORTH OF SHATTUCK. PATH WAS 2 BLOCKS WIDE IN
TOWN. 4 MINOR INJURIES, 1 MAJOR INJURY (PERSON SEEKING SHELTER WAS
HIT BY A CAR).

DAMAGE IN SHATTUCK WAS ESTIMATED BY CIVIL DEFENSE DIRECTOR TO BE
F-2 WITH EMBEDDED F-3. DAMAGE INCLUDED:

10 BUILDINGS DESTROYED(MAINLY BUSINESSES ON MAIN STREET)
17 BUILDINGS WITH MAJOR DAMAGE(MAINLY BUSINESSES)
41 BUILDINGS WITH MINOR DAMAGE(MOSTLY HOMES)
24 BUILDINGS WITH SIGNIFICANT ROOF DAMAGE
6  OUT-BUILDINGS DESTROYED
3  T&RAILER HOMES DESTROYED
Local storm report, Apr 25, 10:44 PM CDT, 1 hour 29 minutes 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.

IssuedProductOfficeCountiesLasted
Apr 25, 7:18 PM CDTSevere Thunderstorm WarningOUNComanche42 min
Apr 25, 7:41 PM CDTSevere Thunderstorm WarningOUNGrady49 min
Apr 25, 7:56 PM CDTSevere Thunderstorm WarningOUNCleveland49 min
Apr 25, 8:19 PM CDTTornado WarningOUNCarter26 min
Apr 25, 8:29 PM CDTSevere Thunderstorm WarningOUNOklahoma46 min
Apr 25, 8:45 PM CDTTornado WarningOUNCarter45 min
Apr 25, 10:13 PM CDTFlash Flood WarningOUNGarvin, Murray2 hr
Apr 25, 11:37 PM CDTFlash Flood WarningOUNPontotoc, Pottawatomie, Seminole4 hr
Apr 26, 12:13 AM CDTFlash Flood WarningOUNCarter, Johnston, Marshall, Murray4 hr
Apr 26, 12:13 AM CDTFlash Flood WarningOUNGarvin4 hr
Apr 26, 12:13 AM CDTFlash Flood WarningOUNHughes4 hr
Apr 26, 3:44 AM CDTFlash Flood WarningOUNCarter, Murray, Pontotoc3 hr
Apr 26, 3:44 AM CDTFlash Flood WarningOUNLove3 hr
Apr 26, 8:52 AM CDTFlash Flood WarningOUNCarter, Jefferson, Love3 hr
Apr 26, 8:52 AM CDTFlash Flood WarningOUNGarvin, Murray, Pontotoc3 hr
Apr 26, 8:52 AM CDTFlash Flood WarningOUNStephens3 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.