Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 49, NWS Shreveport, LA

May 27, 1990Harrison County, Texas

NWS Shreveport, LA issued this flash flood warning at May 27, 1990, 11:47 AM CDT for Harrison County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 27, 1990, 11:47 AM CDT (16:47 UTC)
Expired
May 27, 1990, 2:45 PM CDT
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 12:00Z, 4.8 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 12:00Z on 1990-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2613 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 12:00Z on 1990-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.193958Sfc1 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
2613 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
561 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
1.7
Supercell composite
6.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 271647
FFWSHV
TXC067-203-315-271945-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1147 AM CDT SUN MAY 27 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  245 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN NORTHEAST TEXAS
 
   ...SOUTHEASTERN CASS COUNTY...HARRISON COUNTY...MARION COUNTY
 
AT 1142 AM CDT WEATHER SERVICE RADAR IN SHREVEPORT SHOWED AN AREA
OF SHOWERS AND THUNDERSTORMS..SOME PRODUCING VERY HEAVY RAINFALL..
OVER NORTHEAST TEXAS..SOUTHWEST ARKANSAS..AND EXTREME NORTHWEST
LOUISIANA. THE LEADING EDGE OF THE RAINFALL AREA EXTENDED FROM
NEAR MAGNOLIA ARKANSAS SOUTHWEST TO NEAR COTTON VALLEY..BENTON..
AND DIXIE LOUISIANA AND INTO EAST TEXAS TO NEAR LONGVIEW AND TYLER.
THE AREA WAS ABOUT 75 MILES WIDE. THE FLOOD PRODUCING RAINFALL WAS
INDICATED FROM NEAR CADDO LAKE ALONG THE LOUISIANA/TEXAS STATE
LINE SOUTHWEST TO NEAR MARSHALL TEXAS AND EXTENDED TO THE NORTHWEST
TO NEAR ATLANTA..LINDEN..JEFFERSON..AND LAKE O THE PINES TEXAS.
 
THE SHOWERS AND THUNERSTORMS HAVE BEEN MOVING TO THE SOUTHEAST AT
ABOUT 30 MPH AND HAVE BEEN PRODUCING RAINFALL FROM NEAR ONE TO OVER
THREE INCHES IN A SHORT PERIOD OF TIME..CAUSING EXCESSIVE WATER RUNOFF
AND FLOODING.
 
 
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

Special weather statement, May 27, 5:52 AM CDT, 5 hours 55 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-271200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
540 AM CDT SUN MAY 27 1990

...SEVERE THUNDERSTORM WATCHES REMAINED IN EFFECT FOR PARTS OF SOUTH
ARKANSAS..NORTHEAST TEXAS AND NORTH LOUISIANA ALONG AND AHEAD OF LINE
OF THUNDERSTORMS THAT EXTENDED FROM NEAR MONTICELLO ARKANSAS TO NORTH
OF EL DORADO ARKANSAS TO PLAIN DEALING LOUISIANA TO NEAR JEFFERSON
TEXAS...

AT 535 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
A 70 MILE WIDE BAND OF SHOWERS AND THUNDERSTORMS THAT EXTENDED FROM
NEAR PINE BLUFF ARKANSAS ACROSS CAMDEN ARKANSAS TO NEAR JEFFERSON
TEXAS. MOVEMENT WAS EAST SOUTHEAST NEAR 35 MILES AN HOUR.

WITHIN THE AREA HEAVY RAINS..PEA SIZE HAIL..GUSTY WINDS OF 35 TO 45 MPH
AND FREQUENT LIGHTNING WERE NOTED FROM COTTON VALLEY LOUISIANA TO
SPRINGHILL LOUISIANA AND FROM ELDORADO ARKANSAS TO WARREN ARKANSAS.
IN THE WAKE OF THIS SYSTEM...SHOWERS AND THUNDERSTORMS WERE
REDEVELOPING FROM NEAR KIRBY ARKANSAS TO NEAR BETHEL OKLAHOMA.
ALSO...ISOLATED THUNDERSTORMS WERE ALONG THE RED RIVER SOUTH OF
HAWORTH OKLAHOMA AND NORTHWEST OF SULPHUR SPRINGS TEXAS. SOME
OF THESE STORMS WERE PRODUCING GUSTY WINDS AND HEAVY RAINS.

TO THE SOUTH...A 50 MILE WIDE AREA OF DIMINISHING SHOWERS AND
THUNDERSTORMS WAS NOTED FROM NEAR WINNFIELD LOUISIANA ACROSS TOLEDO
BEND RESERVOIR TO NEAR NACOGDOCHES TEXAS. MOVEMENT WAS SOUTHEAST
NEAR 20 MILES AN HOUR.

ALONG WITH THE THREAT FOR HIGH WINDS AND HAIL...HEAVY RAINS ARE
LIKELY THROUGH TONIGHT OVER PARTS OF THE AREA.
Special weather statement, May 27, 6:48 AM CDT, 4 hours 59 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-271300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
645 AM CDT SUN MAY 27 1990

...SEVERE THUNDERSTORM WATCHES REMAINED IN EFFECT FOR PARTS OF SOUTH
ARKANSAS AND NORTH LOUISIANA..BUT THE WATCH FOR NORTHEAST TEXAS HAS
BEEN CANCELLED...

AT 640 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
A 60 MILE WIDE BAND OF SHOWERS AND THUNDERSTORMS THAT EXTENDED FROM
NEAR MANSFIELD LOUISIANA ACROSS MINDEN LOUISIANA AND EL DORADO ARKANSAS
TO NEAR SHERIDAN ARKANSAS. MOVEMENT WAS EAST SOUTHEAST NEAR 35 MILES AN
HOUR.

WITHIN THE AREA HEAVY RAINS..PEA SIZE HAIL..GUSTY WINDS OF 35 TO 45 MPH
AND FREQUENT LIGHTNING WERE NOTED FROM EAST OF HOMER LOUISIANA TO
SOUTHWEST OF ELDORADO ARKANSAS.
.
IN THE WAKE OF THIS SYSTEM...SHOWERS AND THUNDERSTORMS WERE
REDEVELOPING IN A 30 MILE WIDE AREA FROM NEAR ANTOINE ARKANSAS
ACROSS LAKE GREESON AND SMITHVILLE OKLAHOMA TO NEAR MCALESTER
OKLAHOMA. WITHIN THIS AREA A THUNDERSTORM THAT WAS PRODUCING
GUSTY WINDS...HEAVY RAINS AND FREQUENT LIGHTNING WAS NOTED SOUTH
OF SMITHVILLE OKLAHOMA. MOVEMENT WAS EAST SOUTHEAST NEAR 35 MILES
AN HOUR.

LOW AREA FLOODING MAY DEVELOP IN THE AREAS THAT RECEIVED ONE TO
TWO INCH TOTALS DURING THE WEE HOURS AND THAT THUNDERSTORMS ONCE
AGAIN AFFECT THIS MORNING.

ANOTHER AREA ABOUT 50 MILES WIDE OF SHOWERS AND THUNDERSHOWERS WAS
WAS NOTED FROM NEAR GEORGETOWN LOUISIANA ACROSS BASTROP LOUISIANA
TO NEAR LAKE VILLAGE ARKANSAS. MOVEMENT WAS EAST NEAR 20 MILES
AN HOUR.

ALSO ISOLATED SHOWERS LINGERED EAST OF LUFKIN TEXAS.

ALONG WITH THE THREAT FOR HIGH WINDS AND HAIL...HEAVY RAINS ARE
LIKELY THROUGHE TONIGHT OVER PARTS OF THE AREA.

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 2:54 AM CDTSevere Thunderstorm WarningSHVBowie66 min
May 27, 11:47 AM CDTFlash Flood WarningSHVCass, Marion3 hr
May 27, 12:50 PM CDTSevere Thunderstorm WarningSHVPanola, Shelby85 min
May 27, 12:50 PM CDTSevere Thunderstorm WarningSHVHarrison, Rusk85 min

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.