Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 41, NWS Midland/Odessa, TX

September 26, 20174 counties in Texas

NWS Midland/Odessa, TX issued this flash flood warning at Sep 26, 2017, 2:42 PM CDT for 4 counties in 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 26, 2017, 2:42 PM CDT (19:42 UTC)
Expired
Sep 26, 2017, 5:45 PM CDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Flood severity
None

Counties Borden County, TX, Dawson County, TX, Mitchell County, TX, Scurry County, TX

The radar

The Midland/Odessa radar (KMAF), 100 km from the middle of the area, began a volume at 19:41 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, 7.7 hours before the alert went out and 100 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 2017-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 323 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 2017-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939587897Sfc1 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
323 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

676 
WGUS54 KMAF 261942
FFWMAF
TXC033-115-335-415-262245-
/O.NEW.KMAF.FF.W.0041.170926T1942Z-170926T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Midland/Odessa TX
242 PM CDT TUE SEP 26 2017

The National Weather Service in Midland has issued a

* Flash Flood Warning for...
  Mitchell County in western Texas...
  Scurry County in western Texas...
  Borden County in western Texas...
  Dawson County in western Texas...

* Until 545 PM CDT

* At 238 PM CDT, Doppler radar indicated heavy rain across the warned
  area. Up to one inch of rain has already fallen. Heavy rainfall is 
  anticipated over the next several hours, with at least 1 to 2 
  additional inches of rain possible.  Flash flooding is already 
  occurring or expected to begin shortly.

* Some locations that will experience flooding include...
  Snyder, Lamesa, Colorado City, Gail, Westbrook, 
  Lake Colorado City, Welch, and Fluvanna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3209 10118 3252 10118 3253 10220 3296 10221
      3296 10066 3209 10067

$$

44
1 follow-up statement
135 
WGUS74 KMAF 262127
FFSMAF

Flash Flood Statement
National Weather Service Midland/Odessa TX
427 PM CDT TUE SEP 26 2017

TXC033-115-335-415-262245-
/O.CON.KMAF.FF.W.0041.000000T0000Z-170926T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mitchell TX-Scurry TX-Borden TX-Dawson TX-
427 PM CDT TUE SEP 26 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
MITCHELL...SCURRY...BORDEN AND DAWSON COUNTIES...

At 426 PM CDT, Doppler radar indicated heavy rain across the warned
area. Up to one inch of rain has already fallen. Flash flooding is
expected to begin shortly.

Some locations that will experience flooding include...
Snyder, Lamesa, Colorado City, Gail, Westbrook, 
Lake Colorado City, Welch, and Fluvanna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3209 10118 3252 10118 3253 10220 3296 10221
      3296 10066 3209 10067

$$

44

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 25, 7:02 PM CDTSpecial Weather StatementMAFReeves28 min
Sep 25, 7:28 PM CDTSpecial Weather StatementMAFReeves47 min
Sep 25, 7:50 PM CDTAreal Flood AdvisoryMAFMidland3 hr
Sep 25, 8:29 PM CDTFlash Flood WarningMAFMidland3 hr
Sep 25, 8:39 PM CDTAreal Flood AdvisoryMAFJeff Davis3 hr
Sep 25, 9:11 PM CDTSpecial Weather StatementMAFJeff Davis34 min
Sep 25, 9:39 PM CDTAreal Flood AdvisoryMAFBrewster3 hr
Sep 26, 1:07 PM CDTFlash Flood WarningMAFAndrews, Ector, Martin, Midland3 hr
Sep 26, 1:10 PM CDTFlash Flood WarningMAFCrane, Ector, Pecos, Ward, Winkler3 hr
Sep 26, 1:55 PM CDTFlash Flood WarningMAFHoward, Martin3 hr
Sep 26, 1:56 PM CDTFlash Flood WarningMAFAndrews, Crane, Ector3 hr
Sep 26, 2:21 PM CDTHigh Wind WarningMAF19 hr
Sep 26, 2:35 PM CDTFlash Flood WarningMAFGlasscock, Martin, Midland3 hr
Sep 26, 3:06 PM CDTRiver Flood WarningMAFPresidio66 hr
Sep 26, 3:54 PM CDTFlash Flood WarningMAFAndrews, Ector, Martin, Midland3 hr
Sep 26, 4:56 PM CDTSpecial Weather StatementMAFJeff Davis49 min
Sep 26, 4:58 PM CDTAreal Flood AdvisoryMAFUpton3 hr
Sep 26, 6:30 PM CDTSpecial Weather StatementMAFReeves30 min

Nearby

Flash Flood Warnings in Texas, 2017Every flash flood warning in 2017

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.