Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 19, NWS Austin/San Antonio, TX

May 5, 2001DeWitt County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 5, 2001, 4:01 PM CDT for DeWitt County, Texas. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
May 5, 2001, 4:01 PM CDT (21:01 UTC)
Expired
May 5, 2001, 6:00 PM CDT
In force
119 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County DeWitt County, TX

The radar

The Austin/San Antonio radar (KEWX), 97 km from the middle of the area, began a volume at 21:05 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, 9.0 hours before the alert went out and 143 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 2001-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1535 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 2001-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
1535 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 052102
FFWSAT
TXC123-052300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
401 PM CDT SAT MAY 5 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DEWITT

* UNTIL 600 PM CDT

* AT 400 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  ACROSS DEWITT COUNTY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.


LAT...LON 2895 9769 2884 9760 2897 9742 2890 9731
          2911 9702 2935 9725

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 7:12 PM CDTSevere Thunderstorm WarningEWXMaverick63 min
May 4, 7:35 PM CDTTornado WarningEWXMaverick40 min
May 4, 7:54 PM CDTSevere Thunderstorm WarningEWXBandera, Real66 min
May 4, 8:06 PM CDTFlash Flood WarningEWXBandera, Uvalde114 min
May 4, 8:15 PM CDTSevere Thunderstorm WarningEWXDimmit, Zavala60 min
May 4, 10:14 PM CDTTornado WarningEWXFrio46 min
May 5, 2:20 AM CDTFlash Flood WarningEWXBandera, Real, Uvalde3 hr
May 5, 3:22 PM CDTFlash Flood WarningEWXKarnes113 min
May 5, 3:45 PM CDTFlash Flood WarningEWXLavaca2 hr
May 5, 5:02 PM CDTFlash Flood WarningEWXTravis, Williamson88 min
May 5, 5:41 PM CDTFlash Flood WarningEWXLavaca2 hr

Nearby

Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001

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.