Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 104, NWS Shreveport, LA

November 9, 1990Harrison County, Texas

NWS Shreveport, LA issued this flash flood warning at Nov 9, 1990, 3:36 AM CST for Harrison County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Nov 9, 1990, 3:36 AM CST (09:36 UTC)
Expired
Nov 9, 1990, 6:45 AM CST
In force
3 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

County Harrison 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, 9.6 hours before the alert went out and 31 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 1990-11-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1990-11-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 373 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
373 m²/s²
0-3 km storm-relative helicity
293 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 090937
FFWSHV
TXC203-091245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
336 AM CST FRI NOV 9 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  645 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN NORTHEAST TEXAS
 
   ...WESTERN HARRISON COUNTY
 
AT 325 AM CST THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
MODERATE RAIN REDEVELOPING OVER PARTS OF NORTHEAST TEXAS. THE RAIN
HAD DIMINISHED OVER WEST CENTRAL LOUISIANA BUT CONTINUED TO
REDEVELOP OVER EAST TEXAS. THE LARGE RAIN AREA EXTENDED GENERALLY
EAST OF A LINE FROM HARRIS OKLAHOMA TO QUITMAN TEXAS TO NEAR
PALESTINE TEXAS.
 
MOVEMENT WAS EAST NORTHEAST NEAR 35 MILES AN HOUR.
 
DURING THE PAST HOUR THE MODERATE RAINS RETURNED TO THE WARNED
AREA...AN AREA THAT HAD PREVIOUSLY RECEIVED THREE TO FOUR INCHES
OF RAIN. LOW AREA FLOODING HAD DEVELOPED AND FM 449 AND FM 450
WERE EXPERIENCING WATER OVER THE ROADWAYS.
 
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, Nov 8, 10:02 PM CST, 5 hours 34 minutes before
0822266-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-090545-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1000 PM CST THU NOV 8 1990

...WIDESPREAD RAIN AND NUMEROUS SHOWERS CONTINUED TO SPREAD ACROSS
SOUTHERN ARKANSAS..NORTHEAST TEXAS..EXTREME SOUTHEAST OKLAHOMA AND
NORTH AND CENTRAL LOUISIANA WITH ISOLATED THUNDERSTORMS OVER CENTRAL
LOUISIANA AND EAST CENTRAL TEXAS...

THE RAIN SYSTEM WILL CONTINUE TO AFFECT THE AREA OVERNIGHT AND FRIDAY
WITH THUNDERSTORMS INCREASING OVER THE SOUTHEAST HALF OF THE AREA LATE
TONIGHT THROUGH FRIDAY MORNING. RAINFALL AMOUNTS HAVE BEEN GENERALLY IN
THE 1/2 TO ONE INCH RANGE ACROSS NORTH CENTRAL AND NORTHWEST LOUISIANA
AS WELL AS SOUTHERN ARKANSAS...WITH ONE TO THREE INCH AMOUNTS NOTED IN
NORTHEAST TEXAS.

ADDITIONAL HEAVY RAINFALL AMOUNTS WILL OCCUR OVERNIGHT AND FRIDAY MORNING
OVER MAINLY THE SOUTHEAST HALF OF THE AREA WHERE STRONG THUNDERSTORMS
WILL LIKELY DEVELOP.

PRIOR TO THIS RAIN...AREA STREAMS WERE VERY LOW AND UPPER SOIL
CONDITIONS WERE DRY. DUE TO THE NATURE OF THE RAINFALL AND PRIOR
CONDITIONS THE FLASH FLOOD THREAT IS MINIMAL...HOWEVER HEAVY RAINFALL
AMOUNTS WILL OCCUR OVER MAINLY THE SOUTHEAST HALF OF THE AREA OVER THE
NEXT 12 TO 18 HOURS..AND PONDING OF WATER IN LOW AREAS...STREET AND
UNDERPASS FLOODING IS POSSIBLE. MOTORISTS ARE URGED TO USE CAUTION
NOT ONLY DUE TO THE HEAVY RAINFALL BUT LOW VISIBILITIES IN RAIN AND
FOG. A FLASH FLOOD WATCH REMAINED IN EFFECT FOR THE SOUTHWEST HALF
TONIGHT.

THE LEADING EDGE OF THE RAIN AREA EXTENDED FROM NEAR WARREN ARKANSAS
TO MONROE LOUISIANA TO NEAR JENA LOUISIANA. THE TRAILING EDGE OF THE
RAIN AREA EXTENDED FROM NEAR IDABEL OKLAHOMA TO NEAR TYLER TEXAS TO
NEAR GROVETON TEXAS. WITHIN THE WAKE OF THIS SYSTEM ANOTHER RAIN AREA
WAS NOTED FROM NEAR AUSTIN TO WACO TEXAS.

MOVEMENT WAS EAST NORTHEAST AT 35 TO 40 MILES AN HOUR.

THERE IS NO THREAT OF WINTER PRECIPITATION ACROSS THE AREA AS THE
TEMPERATURES WILL REMAIN IN THE 40S OVERNIGHT.
Special weather statement, Nov 8, 11:59 PM CST, 3 hours 37 minutes before
0822266-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-090800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1155 PM CST THU NOV 8 1990

...WIDESPREAD RAIN AND NUMEROUS SHOWERS CONTINUED TO SPREAD ACROSS
SOUTHERN ARKANSAS..NORTHEAST TEXAS..EXTREME SOUTHEAST OKLAHOMA AND
NORTH AND CENTRAL LOUISIANA WITH ISOLATED THUNDERSTORMS OVER CENTRAL
LOUISIANA AND EAST CENTRAL TEXAS...

THE RAIN SYSTEM WILL CONTINUE TO AFFECT THE AREA OVERNIGHT AND FRIDAY
WITH THUNDERSTORMS INCREASING OVER THE SOUTHEAST HALF OF THE AREA LATE
TONIGHT THROUGH FRIDAY MORNING. RAINFALL AMOUNTS HAVE BEEN GENERALLY IN
THE 1/2 TO ONE INCH RANGE ACROSS NORTH CENTRAL AND NORTHWEST LOUISIANA
AS WELL AS SOUTHERN ARKANSAS...WITH ONE TO THREE INCH AMOUNTS NOTED IN
NORTHEAST TEXAS.

ADDITIONAL HEAVY RAINFALL AMOUNTS WILL OCCUR OVERNIGHT AND FRIDAY MORNING
OVER MAINLY THE SOUTHEAST HALF OF THE AREA WHERE STRONG THUNDERSTORMS
WILL LIKELY DEVELOP.

PRIOR TO THIS RAIN...AREA STREAMS WERE VERY LOW AND UPPER SOIL
CONDITIONS WERE DRY. DUE TO THE NATURE OF THE RAINFALL AND PRIOR
CONDITIONS THE FLASH FLOOD THREAT IS MINIMAL...HOWEVER HEAVY RAINFALL
AMOUNTS WILL OCCUR OVER MAINLY THE SOUTHEAST HALF OF THE AREA OVER THE
NEXT 12 TO 18 HOURS..AND PONDING OF WATER IN LOW AREAS...STREET AND
UNDERPASS FLOODING IS POSSIBLE. MOTORISTS ARE URGED TO USE CAUTION
NOT ONLY DUE TO THE HEAVY RAINFALL BUT LOW VISIBILITIES IN RAIN AND
FOG. A FLASH FLOOD WATCH REMAINED IN EFFECT FOR EAST TEXAS THROUGH
THE NIGHT.

THE TRAILING EDGE OF THE RAIN AREA EXTENDED FROM NEAR HUGO OKLAHOMA TO
NEAR ATHENS TEXAS TO NEAR CROCKETT TEXAS. THE PRECIPITATION EXTENDED
ON EAST INTO WESTERN MISSISSIPPI.s

MOVEMENT WAS EAST NORTHEAST AT 35 TO 40 MILES AN HOUR.
Special weather statement, Nov 9, 1:51 AM CST, 1 hour 45 minutes before
0822266-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-091000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
145 AM CST FRI NOV 9 1990

...WIDESPREAD RAIN AND NUMEROUS SHOWERS CONTINUED TO SPREAD ACROSS
SOUTHERN ARKANSAS..NORTHEAST TEXAS..EXTREME SOUTHEAST OKLAHOMA AND
NORTH AND CENTRAL LOUISIANA WITH ISOLATED THUNDERSTORMS OVER CENTRAL
LOUISIANA...

THE RAIN SYSTEM WILL CONTINUE TO AFFECT THE AREA THROUGH THE EARLY
MORNING HOURS WITH THUNDERSTORMS INCREASING OVER CENTRAL LOUISIANA
THROUGH THIS MORNING. RAINFALL AMOUNTS HAVE BEEN GENERALLY IN 1/2 TO
ONE 1/2 INCH RANGE ACROSS NORTH LOUISIANA AND SOUTHERN ARKANSAS WITH
ONE TO FOUR INCH AMOUNTS NOTED IN NORTHEAST TEXAS. AS OF 1 AM THE
WESTERN SECTIONS OF LONGVIEW REPORTED 4.10 INCHES WITH 3.05 FALLING
BETWEEN 4 PM AND MIDNIGHT. ALSO KILGORE REPORTED 3.00 INCHES AND
GLADEWATER REPORTED 3.50 INCHES.
.
ADDITIONAL HEAVY RAINS WILL OCCUR OVER MAINLY EAST CENTRAL TEXAS INTO
CENTRAL LOUISIANA WHERE THUNDERSTORMS WILL LIKELY DEVELOP.

PRIOR TO THIS RAIN...AREA STREAMS WERE VERY LOW AND UPPER SOIL
CONDITIONS WERE DRY. DUE TO THE NATURE OF THE RAINFALL AND PRIOR
CONDITIONS THE FLASH FLOOD THREAT IS MINIMAL...HOWEVER HEAVY RAINFALL
AMOUNTS WILL OCCUR OVER MAINLY THE SOUTHEAST HALF OF THE AREA OVER THE
NEXT 12 HOURS..AND PONDING OF WATER IN LOW AREAS...STREET AND UNDERPASS
FLOODING IS POSSIBLE. MOTORISTS ARE URGED TO USE CAUTION NOT ONLY DUE
TO THE HEAVY RAINFALL BUT LOW VISIBILITIES IN RAIN AND FOG. A FLASH
FLOOD WATCH REMAINED IN EFFECT FOR EAST TEXAS THROUGH THE NIGHT.

THE TRAILING EDGE OF THE RAIN AREA EXTENDED FROM NEAR IDABEL OKLAHOMA TO
NEAR PALESTINE TEXAS. THE PRECIPITAGTION EXTENDED ON EAST INTO WESTERN
MISSISSIPPI.

MOVEMENT WAS EAST NORTHEAST AT 35 TO 40 MILES AN HOUR.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 9, 6:20 AM CSTFlash Flood WarningSHVHarrison, Marion3 hr
Nov 9, 6:20 AM CSTFlash Flood WarningSHVGregg3 hr

Nearby

Flash Flood Warnings in Texas, 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.