Alert archive / Texas / Flash Flood Warnings in 2012

Flash Flood Warning 42, NWS Midland/Odessa, TX

September 29, 2012Pecos County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Sep 29, 2012, 2:59 AM CDT for Pecos 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 29, 2012, 2:59 AM CDT (07:59 UTC)
Expired
Sep 29, 2012, 6:00 AM CDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Flood severity
None

County Pecos County, TX

The radar

The Midland/Odessa radar (KMAF), 120 km from the middle of the area, began a volume at 07:59 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, 8.0 hours before the alert went out and 120 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 2012-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 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 00:00Z on 2012-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 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
88 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
496 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

974 
WGUS54 KMAF 290759
FFWMAF
TXC371-291100-
/O.NEW.KMAF.FF.W.0042.120929T0759Z-120929T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
259 AM CDT SAT SEP 29 2012

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

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

* UNTIL 600 AM CDT

* AT 253 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE   
  TO DETECT SHOWERS IN THE AREA. ALTHOUGH SHOWERS ARE DECREASING AND 
  THE LARGER THREAT OF HEAVY RAIN IS DECREASING THERE ARE STILL      
  FLOODED ROADWAYS IN THE COUNTY AND THE SHERIFFS REPORTS FLOODING   
  OF FARM TO MARKET ROAD 1776 AND THAT IT IS CLOSED.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO IMPERIAL   
  AND COYANOSA AND AREAS ALONG AND NEAR FARM TO MARKET 1776.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING OF CREEKS AND STREAMS... STREETS AND UNDERPASSES...LOW
WATER CROSSINGS... AND LOW LYING FARMLAND IS LIKELY. DO NOT DRIVE
ACROSS FLOODED ROADS.

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.

&&

LAT...LON 3135 10300 3124 10279 3132 10266 3123 10258
      3094 10286 3054 10324 3077 10356

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 7:31 PM CDTAreal Flood AdvisoryMAFPecos, Reeves, Ward3 hr
Sep 28, 8:59 PM CDTAreal Flood AdvisoryMAFEctor, Midland3 hr
Sep 28, 9:26 PM CDTRiver Flood WarningMAFPresidio13 hr
Sep 28, 9:26 PM CDTRiver Flood WarningMAFBrewster, Presidio13 hr
Sep 28, 9:26 PM CDTRiver Flood WarningMAFBrewster13 hr
Sep 28, 9:42 PM CDTFlash Flood WarningMAFEctor, Midland3 hr
Sep 28, 10:22 PM CDTRiver Flood WarningMAFPresidio12 hr
Sep 28, 10:24 PM CDTFlash Flood WarningMAFCrane, Pecos, Reeves, Ward, Winkler3 hr
Sep 28, 11:42 PM CDTFlash Flood WarningMAFPecos3 hr
Sep 29, 12:25 AM CDTFlash Flood WarningMAFCrane, Ector, Midland, Reeves, Ward, Winkler4 hr
Sep 29, 1:32 AM CDTFlash Flood WarningMAFMitchell4 hr
Sep 29, 4:24 AM CDTAreal Flood AdvisoryMAFCrane, Ector, Glasscock, Midland4 hr
Sep 29, 5:35 AM CDTAreal Flood AdvisoryMAFHoward, Mitchell4 hr
Sep 29, 5:59 AM CDTAreal Flood AdvisoryMAFPecos4 hr

Nearby

Flash Flood Warnings in Texas, 2012Every flash flood warning in 2012

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.