Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 151, NWS Midland/Odessa, TX

July 21, 2007Reeves County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Jul 21, 2007, 6:22 PM CDT for Reeves County, Texas. It took effect at Jul 21, 2007, 6:27 PM CDT. 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 counties it named.

The facts

Issued
Jul 21, 2007, 6:22 PM CDT (23:22 UTC)
In effect from
Jul 21, 2007, 6:27 PM CDT
Expired
Jul 21, 2007, 9:15 PM CDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Whole counties

County Reeves County, TX

The radar

The Midland/Odessa radar (KMAF), 158 km from the middle of the area, began a volume at 23:26 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 12:00Z, 11.4 hours before the alert went out and 158 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 12:00Z on 2007-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1149 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, Midland Regional, TX at 12:00Z on 2007-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
1149 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
588 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMAF 212327
FFWMAF
TXC389-220215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
622 PM CDT SAT JUL 21 2007

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN REEVES COUNTY IN SOUTHWEST TEXAS...

* UNTIL 915 PM CDT

* AT 614 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL ACROSS NORTHWESTERN
  REEVES COUNTY. AT 614 PM CDT DOPPLER RADAR HAD ESTIMATED AN
  HOURLY RAINFALL RATE OF 2 TO 5 INCHES PER HOUR SINCE 514 PM CDT 
  ALONG AND WEST OF UNITED STATES HIGHWAY 285...5 MILES SOUTH OF ORLA. 
  ADDITIONAL RAINFALL IS EXPECTED WHICH WILL INCREASE THE POTENTIAL 
  FOR FLASH FLOODING IN THE WARNED AREA. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ORLA...
  HIGHWAY 285 SOUTH OF ORLA.

FLASH FLOODING OF CREEKS AND STREAMS... LOW WATER CROSSINGS...
NORMALLY DRY WASHES AND ARROYOS... AND LOW LYING FARMLAND IS LIKELY.
DO NOT DRIVE ACROSS FLOODED ROADS.

LAT...LON 3161 10361 3157 10403 3190 10401 3194 10396
TIME...MOT...LOC 2322Z 180DEG 0KT 3176 10393

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 9:30 PM CDTFlash Flood WarningMAFCrane3 hr
Jul 21, 11:47 AM CDTFlash Flood WatchMAFAndrews, Borden, Crane, Dawson, Ector, Gaines and 13 more24 hr
Jul 21, 2:59 PM CDTFlash Flood WarningMAFEctor, Midland3 hr
Jul 21, 3:50 PM CDTFlash Flood WarningMAFJeff Davis3 hr
Jul 21, 4:12 PM CDTFlash Flood WarningMAFWinkler3 hr
Jul 21, 5:11 PM CDTFlash Flood WarningMAFLoving3 hr
Jul 21, 6:55 PM CDTFlash Flood WarningMAFCulberson3 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.