Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 4, NWS Lubbock, TX

May 28, 1987Terry County, Texas

NWS Lubbock, TX issued this flash flood warning at May 28, 1987, 10:27 AM CDT for Terry County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 28, 1987, 10:27 AM CDT (15:27 UTC)
Expired: May 28, 1987, 1:30 PM CDT
In force: 3 hr
Issued by: NWS Lubbock, TX
Area: Whole counties

County Terry 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

Midland Regional, TX (KMAF), launched 12:00Z, 3.5 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2235 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBB 281527
FFWLBB
TXC445-281830-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LUBBOCK TX
1027 AM CDT THU MAY 28 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL  130 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHWEST TEXAS
          ...TERRY
 
AT 1028 CDT...SPOTTERS REPORT WATER AND MUD 30 INCHES DEEP OVER
RURAL ROADS SOUTH OF WELLMAN. THE LARGE THUNDERSTORM PRODUCING THE
HEAVY RAINFALL IS MOVING VERY SLOWLY...AND WILL BE AFFECTING THE AREA
FOR THE NEXT TWO HOURS AT LEAST.
 
 
DO NOT DRIVEE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE 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 28, 6:47 AM CDT, 3 hours 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LUBBOCK TX
645 AM CDT THU MAY 28 1987

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 AM CDT FOR ALL THE
   SOUTH PLAINS...

AT 640 AM CDT THUNDERSTORMS COVERED MOST OF THE SOUTH PLAINS. STRONGEST
STORMS WERE LOCATED NEAR PLAINVIEW...BETWEEN CLAIRMONT AND JUSTICEBURG
...AND IN SOUTHERN TERRY AND LYNN COUNTIES FROM WELCH TO O'DONNEL. ALL
ACTIVITY WAS MOVING NORTHEAST AT 30 MILES AN HOUR.

THESE STORMS ARE PRODUCING INTENSE CLOUD-TO-GROUND LIGHTNING...VERY
HEAVY RAINFALL AND SOME HAIL.  AT 637 AM CDT...THE PLAINVIEW CIVIL
DEFENSE REPORTED MARBLE SIZED HAIL...HEAVY RAIN AND FREQUENT LIGHTNING.

SOUTH PLAINS RESIDENTS ARE CAUTIONED THAT THIS STORM SYSTEM MAY REQUIRE
A FLASH FLOOD WARNING WITHIN THE NEXT COUPLE OF HOURS.  SOME LOW WATER
CROSSINGS MAY ALREADY BE ACCUMULATING WATER...SO MOTORISTS SHOULD BE
EXTREMELY CAREFUL WHEN COMMUTING THIS MORNING.

PERIODIC STATEMENTS WILL BE ISSUED BY YOUR NATIONAL WEATHER SERVICE AS
INFORMATION BECOMES AVAILABLE.

The office that day

Everything else NWS Lubbock, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 9:54 PM CDT	Severe Thunderstorm Warning	LUB	Kent	51 min
May 27, 11:09 PM CDT	Severe Thunderstorm Warning	LUB	King	51 min
May 28, 5:17 AM CDT	Severe Thunderstorm Warning	LUB	Lynn, Terry	58 min
May 28, 6:52 AM CDT	Severe Thunderstorm Warning	LUB	Lynn	68 min
May 28, 7:35 AM CDT	Flash Flood Warning	LUB	Garza, Lynn	115 min
May 28, 7:35 AM CDT	Severe Thunderstorm Warning	LUB	Garza, Lynn	55 min
May 28, 8:40 AM CDT	Severe Thunderstorm Warning	LUB	Dickens	50 min
May 28, 10:13 AM CDT	Tornado Warning	LUB	King	47 min
May 28, 12:27 PM CDT	Flash Flood Warning	LUB	Garza, Lynn	3 hr
May 28, 12:27 PM CDT	Flash Flood Warning	LUB	Kent	3 hr

Nearby

Flash Flood Warnings in Texas, 1987 Every flash flood warning in 1987

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.