Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 21, NWS Midland/Odessa, TX

September 10, 2007Gaines County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Sep 10, 2007, 10:40 PM CDT for Gaines 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 as issued.

The facts

Issued
Sep 10, 2007, 10:40 PM CDT (03:40 UTC)
Expired
Sep 11, 2007, 1:45 AM CDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Counties, with a storm outline in the text
Flood severity
None

County Gaines County, TX

The radar

The Midland/Odessa radar (KMAF), 105 km from the middle of the area, began a volume at 03:43 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

Midland Regional, TX (KMAF), launched 00:00Z, 3.7 hours before the alert went out and 104 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, Midland Regional, TX at 00:00Z on 2007-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2245 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, Midland Regional, TX at 00:00Z on 2007-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
2245 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
980 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
-58 m²/s²
Significant tornado parameter
-0.4
Supercell composite
-2.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMAF 110342
FFWMAF
TXC165-110645-
/X.NEW.KMAF.FF.W.0021.070911T0340Z-070911T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
1040 PM CDT MON SEP 10 2007

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GAINES COUNTY IN WEST TEXAS...

* UNTIL 145 AM CDT

* AT 1033 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED VERY     
  HEAVY RAIN FROM A THUNDERSTORM 10 MILES WEST OF SEMINOLE WITH      
  WATER BEGINNING TO COVER HIGHWAY 180.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SEMINOLE...
  PAYNES CORNER...LOOP...HIGGINBOTHAM...CEDAR LAKE AND ASHMORE

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLOODING IS OBSERVED. MOVE TO
HIGHER GROUND.

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.

LAT...LON 3294 10303 3293 10223 3254 10222 3254 10302
TIME...MOT...LOC 0340Z 180DEG 0KT 3271 10274

$$
1 follow-up statement
000 
WGUS74 KMAF 110539
FFSMAF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
1233 AM CDT TUE SEP 11 2007

TXC165-110645-
/X.CON.KMAF.FF.W.0021.000000T0000Z-070911T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GAINES-
1233 AM CDT TUE SEP 11 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR
GAINES COUNTY...

AT 1229 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED 
TO DETECT THUNDERSTORMS PRODUCING VERY HEAVY RAIN ACROSS GAINES COUNTY. 
THIS SHOWER ACTIVITY WAS NEARLY STATIONARY OVER THE ENTIRE COUNTY. 
ADDITIONAL RAINFALL WILL INCREASE THE CHANCES OF FLASH FLOODING...
ESPECIALLY IN THE CITY OF SEMINOLE. MOTORISTS TRAVELING ALONG U.S. 
HIGHWAY 62/180...TEXAS STATE HIGHWAY 181...U.S. HIGHWAY 385...OR 
FARM TO MARKET ROAD 1788 SHOULD BE AWARE OF POSSIBLE FLOODING. 

THE THUNDERSTORM PRODUCING VERY HEAVY RAIN WILL AFFECT THE FOLLOWING
LOCATIONS...SEMINOLE AND PAYNES CORNER.

MOST FLOODING DEATHS ARE PREVENTABLE... AND MANY OCCUR WHEN MOTORISTS
DRIVE ACROSS FLOODED ROADWAYS. IT IS NEVER SAFE TO DRIVE ON FLOODED
ROADS. IT TAKES ONLY A FEW INCHES OF RAPIDLY FLOWING WATER TO QUICKLY
CARRY AWAY YOUR VEHICLE. TURN AROUND... DONT DROWN.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLOODING IS OBSERVED. MOVE TO
HIGHER GROUND.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MIDLAND.

LAT...LON 3294 10303 3293 10223 3254 10222 3254 10302
TIME...MOT...LOC 0533Z 052DEG 6KT 3269 10274

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 11:25 PM CDTFlash Flood WarningMAFDawson4 hr
Sep 11, 2:44 AM CDTFlash Flood WarningMAFEctor3 hr
Sep 11, 4:46 AM CDTFlash Flood WatchMAFPecos, Terrell10 hr

Nearby

Flash Flood Warnings in Texas, 2007Every flash flood warning in 2007

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.