Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 92, NWS Midland/Odessa, TX

July 31, 1999Ector County, Midland County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Jul 31, 1999, 8:26 PM CDT for Ector County, Midland County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 31, 1999, 8:26 PM CDT (01:26 UTC)
Expired
Jul 31, 1999, 11:30 PM CDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Ector County, TX, Midland County, TX

The radar

The Midland/Odessa radar (KMAF), 21 km from the middle of the area, began a volume at 01:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.4 hours before the alert went out and 299 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, Del Rio, TX at 00:00Z on 1999-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3561 joules per kilogram.LCLEL10008507005003002001001 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, Del Rio, TX at 00:00Z on 1999-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.1939Sfc1 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
3561 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1783 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMAF 010130
FFWMAF
TXC135-329-010430-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND-ODESSA TX
826 PM CDT SAT JUL 31 1999

THE MIDLAND-ODESSA NATIONAL WEATHER SERVICE OFFICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN ECTOR COUNTY IN TEXAS
  WESTERN MIDLAND COUNTY IN TEXAS

* UNTIL 1130 PM CDT

* AT 825 PM CDT...WEATHER SERVICE DOPPLER RADAR DETECTED             
  THUNDERSTORMS WITH VERY HEAVY RAIN IN WESTERN MIDLAND AND          
  SOUTHEASTERN ECTOR COUNTIES...MOVING NORTHWEST AT 10 MPH.

* SOME LOCATIONS AFFECTED BY THIS FLASH FLOOD WARNING INCLUDE...   
  MISSION DORADO...MIDLAND INTERNATIONAL AIRPORT...WARFIELD...COTTON
  FLAT...PLEASANT FARMS...NORTH COWDEN...WEST ODESSA...ODESSA...
  MIDLAND AND GARDENDALE

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...UNDERPASSES...LOW WATER CROSSINGS...AND NORMALLY
DRY WASHES.

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.

LAT...LON 3167 10252 3166 10200 3207 10202 3207 102252

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.

NWS Midland/Odessa, TX wrote its last area forecast discussion before this flash flood warning went out at Jul 31, 2:40 PM CDT, 5 hours 46 minutes earlier.

Area forecast discussion, Jul 31, 2:40 PM CDT, 5 hours 46 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIDLAND TX
240 PM CDT SAT JUL 31 1999

WOULD APPEAR TO BE GOOD DAY FOR STORMS AS LITTLE CAP... PLENTY OF
MOISTURE... AFTERNOON HEATING... COOLING ALOFT... A COLD FRONT
SAGGING SOUTH... AND A TUTT LOW WORKING ITS WAY UP THE RIO GRANDE.
QUITE A BIT OF ACCAS AROUND THROUGH THE MORNING... BUT STORMS GOT A
LATE START TODAY.  STORMS GOING UP NEAR KINK AND OVER THE DAVIS
MOUNTAINS... WITH MOST POTENT STORMS DEVELOPING SOUTH OF THE BORDER
NEAR RIO GRANDE VILLAGE.

19Z SURFACE ANALYSIS HAS FRONT NEAR A KCDS... KLBB... TO KHOB LINE.
THIS FRONT SHOULD PROVIDE NORTHERN PART OF AREA BETTER CHANCE STORMS
WITH SLIGHTLY COOLER TEMPS.

STORMS THAT MAY DEVELOP ALONG THE FRONT WOULD TEND TO PUSH IT FARTHER
SOUTH INTO THE AREA THAN MODELS INDICATE.  CONVECTION LAST FEW DAYS
HAS NOT STOPPED AT SUNSET... BUT LINGERED INTO THE LATE NIGHT/EARLY
MORNING HOURS.  EXPECT STORMS TO DO SAME TONIGHT.

IN THE LONG RUN... NOT EXPECTING MUCH IN THE WAY OF CHANGES AS UPPER
RIDGE STAYS OVER AREA WITH TEMPS WARM.  HISTORICALLY LAST WEEK JULY
AND FIRST WEEK AUGUST IS WARMEST TIME OF YEAR FOR AREA.  INITIAL
NUMBER FOLLOW.

MAF 74/100/73/100  3222
LSA 70/98/72/99  4322
E41 74/100/73/100  3222
6R6 74/97/74/97  5322
MRF 61/84/61/85  4322
CNM 72/100/72/100  3222

.MAF...
TX...NONE.
NM...NONE.

72

Nearby

Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999

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; radar from the NEXRAD Level II archive.