Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 3, NWS Midland/Odessa, TX

May 18, 1990Pecos County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at May 18, 1990, 12:42 AM CDT for Pecos County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: May 18, 1990, 12:42 AM CDT (05:42 UTC)
Expired: May 18, 1990, 2:45 AM CDT
In force: 2 hr
Issued by: NWS Midland/Odessa, TX
Area: Whole counties

County Pecos 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 00:00Z, 5.7 hours before the alert went out and 139 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: 502 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1663 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMAF 180544
FFWMAF
TXC371-180745-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND TX
1242 AM CDT FRI MAY 18 1990
 
THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST TEXAS
 
   ...EASTERN PECOS COUNTY
 
...THIS EXTENDS THE FLASH FLOOD WARNING IN EFFECT UNTIL 1245 AM CDT...
 
AT 1240 AM CDT ROADS IN THE IRRAN AND SHEFFIELD AREA OF EASTERN PECOS
COUNTY WERE STILL BEING REPORTED AS BEING CLOSED DUE TO HIGH WATER.
 
RADAR INDICATES MORE RAIN IS MOVING INTO THE AREA FROM THE WEST. ANY
ADDITIONAL RAINFALL WILL ONLY KEEP LOW LYING AREAS UNDER WATER FOR AN
ADDITIONAL LENGTH OF TIME. MORE RAIN CAN BE EXPECTED TO FALL FOR AT
LEAST THE NEXT TWO HOURS.
 
BOATING INTERESTS IN THE IRRAN AND SHEFFIELD AREAS ALONG THE PECOS
RIVER SHOULD BE AWARE THAT THIS MUCH WATER DRAINING INTO THE RIVER
WILL CAUSE THE WATER LEVEL TO RISE IN THE RIVER.
 
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.
 
DO NOT DRIVE 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.
 
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.

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 10:43 PM CDT	Flash Flood Warning	MAF	Pecos	2 hr

Nearby

Flash Flood Warnings in Texas, 1990 Every 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.