Flash Flood Warning 299, NWS Austin/San Antonio, TX

Issued

Sep 27, 2004, 6:31 PM CDT (23:31 UTC)

Expired

Sep 27, 2004, 9:30 PM CDT

In force

3 hr

Issued by

NWS Austin/San Antonio, TX

Area

Counties, with a storm outline in the text

Counties Real County, TX, Uvalde County, TX

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WGUS54 KEWX 272335
FFWSAT
TXC385-463-280230-
/O.NEW.KEWX.FF.W.0001.040927T2331Z-040928T0230Z/
/0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
631 PM CDT MON SEP 27 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  REAL
  UVALDE

* UNTIL 930 PM CDT

* AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM NEAR MONTELL...MOVING NORTHEAST
  AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE UVALDE...SABINAL...RIO
  FRIO...REAGAN WELLS...LEAKEY...KNIPPA...GARNER STATE PARK AND
  CONCAN.

AN AREA OF THUNDERSTORMS MOVING INTO REAL AND UVALDE COUNTIES WAS 
PRODUCING RAINFALL RATES OF 1 TO 2 INCHES PER HOUR. 

HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...
COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED AREAS. A LITTLE
OVER A FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND
- DONT DROWN.

LAT...LON 2914 10008 2912 9947 2956 9945 2958 9964
      2984 9968 3004 9976 3004 9996 2963 9997
      2946 10007

$$

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 27, 2:10 PM CDT, 4 hours 21 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
210 PM CDT MON SEP 27 2004

.DISCUSSION...
FOR TONIGHT...WILL EXTEND THE FLOOD WATCH THROUGH MIDNIGHT FOR VAL
VERDE AND EDWARDS COUNTIES.  THE BOUDARY LAYER FOCUS IS PROGGED TO
SHIFT WEST ACROSS THE RIO GRADNE BY MIDNIGHT AND THE LOWER LEVEL
MOISTURE DECREASED DUE TO CONTINUOUS NORTHEAST WINDS.  WILL EXPECT
GENERAL LIGHT TO MODERATE SHOWERS IN THE WATCH AREA TONIGHT
RESULTING IN LOCALLIZED 1 TO 2 INCH TOTALS BUT GENERALLY AROUND ONE
QUARTER INCH.  FOR THE REST OF THE COUNTY WARNING AREA,  THE
TROPICAL PLUME DISCONNECTS FROM THE BOUNDAYR LAYER MOISTURE AS THE
UPPER LEVEL LOW LIFTS EAST AND THE FLOW BECOMES MORE ZONAL.  AT THE
SURFACE, THE MASSIVE HIGH PRESSURE OVER MOST OF THE U.S. WILL BUILD
SLIGHTLY INTO TEXAS, KEEPING THE DRIER DEWPOINTS COMING IN AND
LIMITING CLOUDINESS TO MID AND HIGH CLOUDS. ANOTHER COLD FRONT WILL
SLIDE INTO TEXAS SATURDAY, REINFORCING THE NORTHERLY SFC FLOW, BUT
THERE WILL BE A LOW CLOUD DECK TO ANNOUNCE THE ARRIVAL.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              65  86  62  86 / 20  10  10  5
AUSTIN BERGSTROM INTL AIRPORT  61  86  59  86 / 20  10  10  5
DEL RIO INTL AIRPORT           67  84  63  84 / 40  40  20  5
SAN ANTONIO INTL AIRPORT       64  86  63  85 / 20  20  10  5

&&

.EWX WATCHES/WARNINGS/ADVISORIES...FLOOD WATCH FOR FLASH FLOODING
THROUGH
MIDNIGHT - EDWARDS, KINNEY AND VAL VERDE COUNTIES.

&&

06/02/DC

Flash Flood Warnings in Texas, 2004Every flash flood warning in 2004

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.