Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 142, NWS Austin/San Antonio, TX

June 27, 2015Dimmit County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 27, 2015, 6:26 PM CDT for Dimmit 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 27, 2015, 6:26 PM CDT (23:26 UTC)
Expired
Jun 27, 2015, 8:30 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

County Dimmit County, TX

The radar

The Laughlin AFB radar (KDFX), 114 km from the middle of the area, began a volume at 23:27 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

Corpus Christi, TX (KCRP), launched 12:00Z, 11.4 hours before the alert went out and 237 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, Corpus Christi, TX at 12:00Z on 2015-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1520 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, Corpus Christi, TX at 12:00Z on 2015-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -62 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
1520 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-62 m²/s²
0-3 km storm-relative helicity
36 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.

626 
WGUS54 KEWX 272326
FFWEWX
TXC127-280130-
/O.NEW.KEWX.FF.W.0142.150627T2326Z-150628T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
626 PM CDT SAT JUN 27 2015

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN DIMMIT COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 830 PM CDT
    
* AT 625 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. RADAR ESTIMATES OF UP TO THREE 
  INCHES OF RAIN HAVE BEEN OBSERVED. FLASH FLOODING IS EXPECTED TO 
  BEGIN SHORTLY IF NOT ALREADY ONGOING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BIG WELLS...ASHERTON...LAS VEGAS...CATARINA...LIGHT...GILSON GROVES
  AND BRUNDAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

FLOODING IS OCCURRING OR IS IMMINENT.  IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS.  CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 2852 9979 2863 9940 2821 9940 2820 9978

$$

TB3
1 follow-up statement
331 
WGUS74 KEWX 280033
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
733 PM CDT SAT JUN 27 2015

TXC127-280041-
/O.CAN.KEWX.FF.W.0142.000000T0000Z-150628T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DIMMIT TX-
733 PM CDT SAT JUN 27 2015

...THE FLASH FLOOD WARNING FOR EASTERN DIMMIT COUNTY IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. SOME LOW WATER CROSSINGS AND ROADWAYS MAY STILL BE 
EXPERIENCING SOME MINOR FLOODING SO EXERCISE CAUTION IF YOU 
ENCOUNTER ANY WHILE DRIVING.

LAT...LON 2852 9979 2863 9940 2821 9940 2820 9978

$$

TB3

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 27, 6:40 AM CDTAreal Flood AdvisoryEWXVal Verde2 hr
Jun 27, 6:42 AM CDTAreal Flood AdvisoryEWXBurnet, Llano, Williamson3 hr
Jun 27, 7:01 AM CDTFlash Flood WarningEWXBurnet3 hr
Jun 27, 1:19 PM CDTSpecial Weather StatementEWXKinney41 min
Jun 27, 1:27 PM CDTSpecial Weather StatementEWXReal48 min
Jun 27, 1:57 PM CDTAreal Flood AdvisoryEWXReal, Uvalde3 hr
Jun 27, 2:06 PM CDTSpecial Weather StatementEWXKinney39 min
Jun 27, 3:32 PM CDTAreal Flood AdvisoryEWXTravis118 min
Jun 27, 3:40 PM CDTSpecial Weather StatementEWXTravis50 min
Jun 27, 3:45 PM CDTAreal Flood AdvisoryEWXGillespie, Kerr2 hr
Jun 27, 3:48 PM CDTSpecial Weather StatementEWXMaverick42 min
Jun 27, 3:57 PM CDTAreal Flood AdvisoryEWXTravis2 hr
Jun 27, 4:07 PM CDTSpecial Weather StatementEWXMaverick23 min
Jun 27, 4:08 PM CDTSpecial Weather StatementEWXZavala52 min
Jun 27, 4:17 PM CDTSpecial Weather StatementEWXBandera28 min
Jun 27, 4:59 PM CDTAreal Flood AdvisoryEWXBlanco, Gillespie, Kendall2 hr
Jun 27, 5:09 PM CDTSpecial Weather StatementEWXDimmit36 min
Jun 27, 5:10 PM CDTSpecial Weather StatementEWXKendall35 min
Jun 27, 5:14 PM CDTSevere Thunderstorm WarningEWXDimmit31 min
Jun 27, 5:20 PM CDTSevere Thunderstorm WarningEWXDimmit40 min
Jun 27, 5:23 PM CDTSpecial Weather StatementEWXBandera37 min
Jun 27, 5:53 PM CDTSpecial Weather StatementEWXKendall37 min
Jun 27, 5:58 PM CDTAreal Flood AdvisoryEWXDimmit2 hr
Jun 27, 6:02 PM CDTSpecial Weather StatementEWXDimmit28 min
Jun 27, 6:32 PM CDTSpecial Weather StatementEWXDimmit43 min
Jun 27, 6:34 PM CDTAreal Flood AdvisoryEWXFrio116 min

Nearby

Flash Flood Warnings in Texas, 2015Every flash flood warning in 2015

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.