Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 23, NWS Shreveport, LA

May 3, 1990Panola County, Shelby County, Texas; De Soto Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at May 3, 1990, 3:11 PM CDT for Panola County, Shelby County, Texas; De Soto Parish, Louisiana. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
May 3, 1990, 3:11 PM CDT (20:11 UTC)
Expired
May 3, 1990, 4:15 PM CDT
In force
64 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties De Soto Parish, LA, Panola County, TX, Shelby County, TX

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

Longview/Gregg, TX (KGGG), launched 12:00Z, 8.2 hours before the alert went out and 64 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, Longview/Gregg, TX at 12:00Z on 1990-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 200 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, Longview/Gregg, TX at 12:00Z on 1990-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 square meters per square second.1939587897Sfc1 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
200 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
702 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
242 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 032014
FFWSHV
LAC031-TXC365-419-032115-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
311 PM CDT THU MAY 3 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  415 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN NORTHWEST LOUISIANA
 
   ...DESOTO PARISH
 
 
IN NORTHEAST TEXAS
 
   ...WESTERN PANOLA COUNTY...NORTHEASTERN SHELBY COUNTY
 
AT 310 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM 20 MILES SOUTHWEST OF MANSFIELD TEXAS. MOVEMENT WAS
NORTHEAST AT 30 MILES AN HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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 3, 2:14 PM CDT, 57 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-032100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
210 PM CDT THU MAY 3 1990

...A FLASH FLOOD WATCH IS IN EFFECT THIS AFTERNOON FOR NORTHEAST TEXAS
   SOUTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA...
...A FLASH FLOOD WATCH HAS ALSO BEEN ISSUED FOR NORTHWEST LOUISIANA
   FOR THE REMAINDER OF THIS AFTERNOON AND TONIGHT...

AT 200 PM CDT..NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT INDICATED
A THUNDERSTORM PODUCING VERY HEAVY RAINFALL MOVING INTO SOUTHEAST RUSK
AND WESTERN SHELBY COUNTIES OF EAST TEXAS.  THIS THUNDERSTORM WAS 15
MILES WEST OF CENTER TEXAS.  THE THUNDERSTORM IS ALSO CAPABLE OF
PRODUCING STRONG GUSTY WINDS...SMALL HAIL AND DANGEROUS LIGHTNING.
MOVEMENT WAS NORTHEAST AT 25 TO 30 MILES AN HOUR.

THIS THUNDERSTORM WAS PART OF A LARGER AREA OF RAIN AND THUNDERSTORMS
THAT STRETCHED FROM MENA AND FORDYCE ARKANSAS SOUTHWEST TO SHREVEPORT
9ND TYLER TO LUFKIN.  THE AREA OF RAINFALL WAS MOVING EAST AT 10 TO
15 MILES AN HOUR.

PERSONS LIVING IN LOW LYING OR FLOOD PRONE AREAS OR NEAR LAKES..RIVERS
AND STREAMS THAT ARE AT HIGHS LEVELS OR FORECAST TO REACH HIGH LEVELS..
SHOULD) BE PREPARED TO MOVE TO HIGHER GROUND IF HEAVY RAINS OCCUR OR
A WARNING IS ISSUED FOR YOUR AREA.

STAY TUNED TO TV..RADIO AND NOAA WEATHER RADIO FOR THE LATEST WEATHER
INFORMATION.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 3:11 PM CDTSevere Thunderstorm WarningSHVPanola, Shelby64 min
May 3, 4:16 PM CDTFlash Flood WarningSHVShelby3 hr
May 3, 4:16 PM CDTSevere Thunderstorm WarningSHVShelby3 hr
May 3, 3:36 PM CDTFlash Flood WarningSHVBossier, Caddo3 hr
May 3, 3:36 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo3 hr
May 3, 4:16 PM CDTFlash Flood WarningSHVBienville, Webster3 hr
May 3, 4:16 PM CDTFlash Flood WarningSHVRed River3 hr
May 3, 4:16 PM CDTSevere Thunderstorm WarningSHVBienville, Webster3 hr

Nearby

Flash Flood Warnings in Texas, 1990Flash Flood Warnings in Louisiana, 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.