Alert archive / New Mexico / Flash Flood Warnings in 2017

Flash Flood Warning 29, NWS Midland/Odessa, TX

August 21, 2017Lea County, New Mexico; Gaines County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Aug 21, 2017, 4:35 AM MDT for Lea County, New Mexico; 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
Aug 21, 2017, 4:35 AM MDT (10:35 UTC)
Expired
Aug 21, 2017, 7:30 AM MDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Flood severity
None

Counties Lea County, NM, Gaines County, TX

The radar

The Lubbock radar (KLBB), 162 km from the middle of the area, began a volume at 10:36 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, 10.6 hours before the alert went out and 175 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 2017-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 114 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 2017-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
114 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
2478 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

815 
WGUS54 KMAF 211035
FFWMAF
NMC025-TXC165-211330-
/O.NEW.KMAF.FF.W.0029.170821T1035Z-170821T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Midland/Odessa TX
535 AM CDT MON AUG 21 2017

The National Weather Service in Midland has issued a

* Flash Flood Warning for...
  Northern Lea County in southeastern New Mexico...
  Northwestern Gaines County in western Texas...

* Until 830 AM CDT/730 AM MDT/

* At 534 AM CDT/434 AM MDT/, Doppler radar indicated multiple 
  thunderstorms producing heavy rain across the warned area. Up to 
  two to three inches of rain have already fallen across some areas 
  over the last 24 hours. Flash flooding is expected.

* Some locations that will experience flooding include...
  Lovington, Tatum, McDonald, Caprock, Buckeye, Knowles, Maljamar,
  Crossroads, Gladiola and Tatum Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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

&&

LAT...LON 3296 10306 3296 10305 3281 10305 3279 10379
      3297 10380 3297 10376 3340 10377 3340 10372
      3357 10372 3357 10306

$$

27
2 follow-up statements
294 
WGUS74 KMAF 211220
FFSMAF

Flash Flood Statement
National Weather Service Midland/Odessa TX
720 AM CDT MON AUG 21 2017

NMC025-TXC165-211330-
/O.CON.KMAF.FF.W.0029.000000T0000Z-170821T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lea NM-Gaines TX-
720 AM CDT MON AUG 21 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM CDT/730 AM
MDT/ FOR NORTHERN LEA AND NORTHWESTERN GAINES COUNTIES...

At 718 AM CDT/618 AM MDT/, Doppler radar indicated thunderstorms 
producing heavy rain have moved out of the warned area, however, 
areas of moderate to locally heavy rain continue. Up to three inches 
of rain have already fallen. Flash flooding is expected to be 
ongoing across portions of northern Lea county.

Some locations that will experience flooding include...
Lovington, Tatum, McDonald, Caprock, Buckeye, Knowles, Maljamar,
Crossroads, Gladiola and Tatum Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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

&&

LAT...LON 3296 10306 3296 10305 3281 10305 3279 10379
      3297 10380 3297 10376 3340 10377 3340 10372
      3357 10372 3357 10306

$$

84
943 
WGUS74 KMAF 211335
FFSMAF

Flash Flood Statement
National Weather Service Midland/Odessa TX
835 AM CDT MON AUG 21 2017

NMC025-TXC165-211344-
/O.EXP.KMAF.FF.W.0029.000000T0000Z-170821T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lea NM-Gaines TX-
835 AM CDT MON AUG 21 2017

...THE FLASH FLOOD WARNING FOR NORTHERN LEA AND NORTHWESTERN GAINES
COUNTIES HAS EXPIRED...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 3296 10306 3296 10305 3281 10305 3279 10379
      3297 10380 3297 10376 3340 10377 3340 10372
      3357 10372 3357 10306

$$

84

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 6:52 PM MDTFlash Flood WarningMAFEddy4 hr
Aug 21, 2:47 AM MDTAreal Flood AdvisoryMAFEddy, Lea3 hr
Aug 21, 3:33 AM MDTAreal Flood AdvisoryMAFLea3 hr
Aug 20, 7:25 PM MDTAreal Flood AdvisoryMAFCulberson, Jeff Davis, Reeves3 hr
Aug 20, 11:36 PM MDTAreal Flood AdvisoryMAFBrewster, Jeff Davis, Presidio3 hr
Aug 21, 9:58 AM MDTRiver Flood WarningMAFPresidio14 days
Aug 21, 9:58 AM MDTRiver Flood WarningMAFPresidio52 hr
Aug 21, 3:48 PM MDTAreal Flood AdvisoryMAFDawson3 hr
Aug 21, 4:50 PM MDTAreal Flood AdvisoryMAFJeff Davis, Reeves3 hr
Aug 21, 4:55 PM MDTSpecial Weather StatementMAFJeff Davis35 min
Aug 21, 5:17 PM MDTAreal Flood AdvisoryMAFPecos3 hr

Nearby

Flash Flood Warnings in New Mexico, 2017Flash 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.