Alert archive / Texas / Flash Flood Warnings in 1989

Flash Flood Warning 21, NWS Shreveport, LA

May 16, 1989Harrison County, Marion County, Texas

NWS Shreveport, LA issued this flash flood warning at May 16, 1989, 11:38 PM CDT for Harrison County, Marion County, Texas. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
May 16, 1989, 11:38 PM CDT (04:38 UTC)
Expired
May 17, 1989, 12:45 AM CDT
In force
67 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Harrison County, TX, Marion 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 00:00Z, 4.6 hours before the alert went out and 42 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 00:00Z on 1989-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Longview/Gregg, TX at 00:00Z on 1989-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
7 J/kg
Mixed-layer CIN
-383 J/kg
Mixed-layer LCL
1095 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
5 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 KSHV 170438
FFWSHV
TXC067-203-315-170545-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1138 PM CDT TUE MAY 16 1989
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1245 AM CDT
AND A FLASH FLOOD WARNING EFFECTIVE UNTIL 1245 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHEAST TEXAS
          ...CASS...HARRISON...MARION
 
AT 1135 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT
SHOWED A LINE OF SEVERE THUNDERSTORMS THAT EXTENDED FROM NEAR
DANGERFIELD TO ASHLAND TO KILGORE TEXAS. MOVEMENT WAS EAST AT
40 TO 50 MPH.
 
A TORNADO WATCH REMAINED IN EFFECT FOR PARTS OF NORTHEAST TEXAS.
 
A FLASH FLOOD WATCH WAS ALSO IN EFFECT FOR NORTHEAST TEXAS AS
WELL AS SOUTHEAST OKLAHOMA AND NORTHWEST LOUISIANA.
 
LARGE HAIL...HIGH WINDS AND SOME FLODING HAVE BEEN REPORTED
WITH THESE STORMS.
 
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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 10:54 PM CDTFlash Flood WarningSHVGregg, Rusk66 min
May 16, 10:54 PM CDTSevere Thunderstorm WarningSHVGregg, Rusk66 min
May 16, 11:38 PM CDTFlash Flood WarningSHVCass67 min
May 16, 11:38 PM CDTSevere Thunderstorm WarningSHVHarrison, Marion67 min
May 16, 11:38 PM CDTSevere Thunderstorm WarningSHVCass67 min
May 17, 9:27 AM CDTTornado WarningSHVGregg, Rusk78 min
May 17, 1:53 PM CDTSevere Thunderstorm WarningSHVPanola, Shelby67 min
May 17, 2:09 PM CDTFlash Flood WarningSHVBowie, Cass, Marion4 hr
May 17, 2:36 PM CDTSevere Thunderstorm WarningSHVMarion21 min
May 17, 2:36 PM CDTSevere Thunderstorm WarningSHVBowie64 min
May 17, 2:36 PM CDTSevere Thunderstorm WarningSHVCass69 min
May 17, 2:46 PM CDTTornado WarningSHVCass59 min
May 17, 4:32 PM CDTSevere Thunderstorm WarningSHVPanola, Rusk88 min
May 17, 5:35 PM CDTFlash Flood WarningSHVPanola, Shelby4 hr
May 17, 5:35 PM CDTFlash Flood WarningSHVGregg, Harrison, Rusk4 hr
May 17, 5:35 PM CDTTornado WarningSHVPanola, Shelby85 min

Nearby

Flash Flood Warnings in Texas, 1989Every flash flood warning in 1989

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.