Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 8, NWS Austin/San Antonio, TX

February 20, 2003Burnet County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Feb 20, 2003, 8:06 PM CST for Burnet 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: Feb 20, 2003, 8:06 PM CST (02:06 UTC)
Expired: Feb 20, 2003, 11:00 PM CST
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Burnet County, TX

Did it verify

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.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.1 hours before the alert went out and 247 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 454 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 83 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.

000 
WGUS54 KEWX 210213
FFWSAT
TXC053-210500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
806 PM CST THU FEB 20 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BURNET

* UNTIL 1100 PM CST

* AT 805 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  FROM 8 MILES SOUTHWEST OF BURNET TO MARBLE FALLS...MOVING   
  NORTHEAST AT 20 MPH.

SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE TRAINING ACROSS 
BURNET COUNTY OVER THE PAST HOUR WITH RAINFALL RATES APPROACHING ONE 
INCH PER HOUR.  HEAVY RAINS WILL CONTINUE TO TRAIN ACROSS BURNET 
COUNTY RESULTING IN FLASH FLOODING OVER THE NEXT FEW HOURS 

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3079 9836 3053 9832 3047 9815 3097 9789
          3100 9839

$$

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Feb 20, 2:50 PM CST, 5 hours 16 minutes earlier.

Area forecast discussion, Feb 20, 2:50 PM CST, 5 hours 16 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
250 PM CST THU FEB 20 2003

CWA TO REMAIN UNDER THE GUN.  SURFACE BOUNDARY HAD EDGED INTO OUR SE
COUNTIES AND SHOULD DRIFT A BIT NORTH OVERNIGHT INTO OUT NORTHEAST
COUNTIES.  SEVERE WEATHER TO BREAK OUT MAINLY LATER TONIGHT.  MAIN
THREAT WILL BE HAIL AND STRONG WINDS WITH ISOLATED TORNADOES ALONG
AND EAST OF THE SURFACE BOUNDARY.  GOOD SHOTS OF ENERGY EXPECTED
TONIGHT AND AGAIN FRIDAY AFTERNOON.  WILL EXTEND FLASH FLOOD WATCH
THROUGH FRIDAY AFTERNOON.  UPPER SYSTEM WILL BE SLOW TO MOVE
THROUGH THE CWA WITH SHOWERS AND THUNDERSTORMS NOT STARTING TO END
UNTIL FRIDAY EVENING IN THE WEST AND LATE FRIDAY NIGHT IN THE EAST.
NICE WEATHER FOR THE WEEKEND.  STRONG COLD FRONT BRINGS LOWS BACK IN
THE 30S FOR TUESDAY AND WEDNESDAY MORNINGS.  ANOTHER UPPER LOW WILL
BRING A RETURN OF SHOWERS AND THUNDERSTORMS FOR THE MIDDLE OF NEXT
WEEK.

PRELIMINARY NUMBERS...
AUS  050 060/043 066 ++70
DRT  052 062/044 074 8+30
SAT  054 063/045 068 ++60=

.EWX...FLASH FLOOD WATCH THOROUGH FRIDAY AFTERNOON FOR ALL OF
       SOUTH CENTRAL TEXAS.

3/13/JB

Hazardous weather outlook, Feb 20, 6:00 AM CST, 14 hours 6 minutes before

TXZ171>173-183>194-202>209-217>225-228-211200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
600 AM CST THU FEB 20 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY...EXCESSIVE RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE
EXPECTED OVER ALL OF SOUTH CENTRAL TEXAS TODAY.  AS A WINTER STORM
SYSTEM APPROACHES SOUTH TEXAS TONIGHT, AN ADDITIONAL 2 TO 3 INCHES
OF RAIN IS POSSIBLE AND FLASH FLOODING BECOMES LIKELY.  ALSO THERE
IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH LARGE HAIL.

.DAYS TWO THROUGH SEVEN...
AN ADDITIONAL ONE INCH OF RAIN FRIDAY IS POSSIBLE BEFORE THE WINTER
STORM EXITS SOUTH TEXAS.  FLASH FLOODING AND A FEW SEVERE
THUNDERSTORMS WILL REMAIN UNTIL AROUND NOON FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.

In the hours before

Local storm report, Feb 20, 7:31 PM CST, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
0731 PM CST THU FEB 20 2003

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1159 AM    HALLETTSVILLE             TX   0.88 IN HAIL
02/20/03   LAVACA

0930 AM    NIXON                     TX   0.75 IN HAIL
02/20/03   GONZALES

PM

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 8:31 PM CST	Flash Flood Warning	EWX	Fayette	89 min
Feb 21, 3:47 AM CST	Flash Flood Warning	EWX	Bandera, Gillespie, Kendall, Kerr	3 hr
Feb 21, 3:51 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Kerr	54 min
Feb 21, 4:39 AM CST	Flash Flood Warning	EWX	Blanco, Burnet	3 hr
Feb 21, 4:47 AM CST	Severe Thunderstorm Warning	EWX	Kendall, Kerr	58 min
Feb 21, 6:01 AM CST	Flash Flood Warning	EWX	Hays, Travis, Williamson	4 hr
Feb 21, 6:38 AM CST	Flash Flood Warning	EWX	Gillespie	67 min

Nearby

Flash Flood Warnings in Texas, 2003 Every flash flood warning in 2003

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.