Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 39, NWS Midland/Odessa, TX

June 20, 2009Ector County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Jun 20, 2009, 7:42 AM CDT for Ector County, Texas. It was in force for 2 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
Jun 20, 2009, 7:42 AM CDT (12:42 UTC)
Expired
Jun 20, 2009, 9:45 AM CDT
In force
2 hr
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Flood severity
None

County Ector County, TX

The radar

The Midland/Odessa radar (KMAF), 33 km from the middle of the area, began a volume at 12:46 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 12:00Z, 0.7 hours before the alert went out and 326 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 12:00Z on 2009-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 503 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, Del Rio, TX at 12:00Z on 2009-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 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
503 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
608 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
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 201242
FFWMAF
TXC135-201445-
/O.NEW.KMAF.FF.W.0039.090620T1242Z-090620T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
742 AM CDT SAT JUN 20 2009

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ECTOR COUNTY IN WEST TEXAS...

* UNTIL 945 AM CDT

* AT 738 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  FLASH FLOODING FROM A THUNDERSTORM NEAR WEST ODESSA...MOVING
  NORTHEAST AT 15 MPH.

* THE THUNDERSTORM PRODUCING FLASH FLOODING WILL AFFECT THE FOLLOWING
LOCATIONS...
  ODESSA...
  GARDENDALE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL IS EXPECTED WHICH COULD INCREASE THE POTENTIAL
FOR FLOODING IN THE WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS... URBAN AREAS... HIGHWAYS... STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 3206 10268 3206 10231 3168 10236 3172 10267

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 7:29 PM CDTAreal Flood AdvisoryMAFCrane, Pecos, Ward3 hr
Jun 19, 10:52 PM CDTAreal Flood AdvisoryMAFBrewster, Presidio3 hr
Jun 20, 12:14 AM CDTRiver Flood WarningMAFBrewster8 hr
Jun 20, 1:35 AM CDTRiver Flood WarningMAFPresidio12 hr
Jun 20, 4:14 AM CDTAreal Flood AdvisoryMAFEctor2 hr
Jun 20, 4:39 AM CDTFlash Flood WarningMAFEctor3 hr
Jun 20, 4:44 AM CDTAreal Flood AdvisoryMAFAndrews, Gaines2 hr
Jun 20, 4:56 AM CDTAreal Flood AdvisoryMAFBrewster, Crane, Pecos, Terrell, Upton3 hr
Jun 20, 6:16 AM CDTAreal Flood AdvisoryMAFMidland119 min
Jun 20, 8:15 AM CDTAreal Flood AdvisoryMAFMidland3 hr
Jun 20, 8:31 AM CDTAreal Flood AdvisoryMAFHoward3 hr
Jun 20, 10:04 AM CDTAreal Flood AdvisoryMAFPecos, Terrell3 hr
Jun 20, 10:08 AM CDTFlash Flood WarningMAFReagan3 hr

Nearby

Flash Flood Warnings in Texas, 2009Every flash flood warning in 2009

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.