Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 46, NWS Austin/San Antonio, TX

July 1, 2002Bexar County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 1, 2002, 5:02 PM CDT for Bexar 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: Jul 1, 2002, 5:02 PM CDT (22:02 UTC)
Expired: Jul 1, 2002, 8:00 PM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Bexar County, TX

The radar

The Austin/San Antonio radar (KEWX), 56 km from the middle of the area, began a volume at 22:03 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

Del Rio, TX (KDRT), launched 12:00Z, 10.0 hours before the alert went out and 218 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: 676 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 625 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 19 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 012202
FFWSAT
TXC029-020100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
500 PM CDT MON JUL 1 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 457 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  9 MILES WEST OF LACKLAND AFB EXTENDING TO NEAR HELOTES...MOVING
  NORTHEAST AT 15 MPH.  RAINFALL RATES OF 2 TO 3.5 INCHES PER HOUR
  ARE ESTIMATED.  THIS WILL AGGREVATE ALREADY SATURATED SOILS AND
  CAUSE ADDITIONAL FLASH FLOODING.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE...
  OVER LEON VALLEY AT 525 PM
  3 MILES NORTHWEST OF BALCONES HEIGHTS AT 535 PM
  3 MILES NORTHWEST OF CASTLE HILLS AT 540 PM
  OVER SHAVANO PARK AT 545 PM
  OVER HILL COUNTRY VILLAGE AT 550 PM
  OVER HOLLYWOOD PARK AT 555 PM

* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...
  LACKLAND AFB
  LEON VALLEY
  BALCONES HEIGHTS
  SAN ANTONIO
  OLMOS PARK
  CASTLE HILLS

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.  MOTORISTS 
SHOULD BE EXTRA CAREFUL DURING THIS EVENINGS COMMUTE.

ADDITIONAL FLOODING CAN BE EXPECTED IN THE LEON AND SALADO CREEK 
WATERSHEDS.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.


LAT...LON 2972 9880 2928 9881 2954 9829 2968 9837
          2974 9855

6 follow-up statements

000 
WGUS74 KEWX 012240
FFSSAT
TXC029-012330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
541 PM CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 630 PM
CDT...

AT 538 PM CDT...VERY HEAVY RAINFALL CONTINUES ACROSS WESTERN AND 
SOUTHEASTERN BEXAR COUNTY.  THE HEAVIEST RAINFALL WITH RATES OF 1 TO 
3 INCHES PER HOUR BETWEEN LACKLAND AFB AND HELOTES AND BETWEEN 
ELMENDORF AND SAINT HEDWIG.  THE RAINS WERE SPREADING TO THE 
NORTHEAST AT 15 MPH.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST 
WEATHER INFORMATION.

000 
WGUS74 KEWX 012314
FFSSAT
TXC029-020000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
614 PM CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 800 PM
CDT...

AT 613 PM CDT...VERY HEAVY RAINFALL CONTINUES ACROSS NORTHERN AND 
CENTRAL BEXAR COUNTY.  THE HEAVIEST RAINFALL WITH RATES OF 2 TO 3 
INCHES PER HOUR WAS BETWEEN LACKLAND AFB AND DOWNTOWN SAN ANTONIO 
AND BETWEEN STONE OAK AND BULVERDE.  ELSEWHERE...RAINFALL RATES OF 
ONE-HALF TO ONE INCH PER HOUR WERE ESTIMATED.  THE RAINS WERE 
SPREADING TO THE NORTHEAST AT 15 MPH.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST 
WEATHER INFORMATION.

000 
WGUS74 KEWX 012357
FFSSAT
TXC029-020045-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
658 PM CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 800 PM
CDT...

AT 655 PM CDT...VERY HEAVY RAINFALL CONTINUES ACROSS NORTHERN BEXAR 
COUNTY.  THE HEAVIEST RAINFALL WITH RATES OF 2 TO 3 INCHES PER HOUR 
WAS BETWEEN DOWNTOWN SAN ANTONIO...THE MEDICAL CENTER AREA...AND 
STONE OAK.  ELSEWHERE...RAINFALL RATES WERE ONE-HALF TO 2 INCHES PER 
HOUR.  THE HEAVIEST RAINS WERE DRIFTING TO THE NORTHEAST AT 5 MPH.  

ADDITIONAL FLOODING WILL AFFECT THE LEON CREEK...SALADO CREEK...AND 
UPPER SAN ANTONIO RIVER DRAINAGES FOR AT LEAST THE NEXT HOUR AND 
LIKELY LONGER.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST 
WEATHER INFORMATION.

000 
WGUS74 KEWX 012359 CCA
FFSSAT
TXC029-020045-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
658 PM CDT MON JUL 1 2002...CORRECTED FOR RAINFALL RATES

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 800 PM
CDT...

AT 655 PM CDT...VERY HEAVY RAINFALL CONTINUES ACROSS NORTHERN BEXAR 
COUNTY.  THE HEAVIEST RAINFALL WITH RATES OF 2 TO 4 INCHES PER HOUR 
WAS BETWEEN DOWNTOWN SAN ANTONIO...THE MEDICAL CENTER AREA...AND 
STONE OAK.  ELSEWHERE...RAINFALL RATES WERE ONE-HALF TO 2 INCHES PER 
HOUR.  THE HEAVIEST RAINS WERE DRIFTING TO THE NORTHEAST AT 5 MPH.  

ADDITIONAL FLOODING WILL AFFECT THE LEON CREEK...SALADO CREEK...AND 
UPPER SAN ANTONIO RIVER DRAINAGES FOR AT LEAST THE NEXT HOUR AND 
LIKELY LONGER.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST 
WEATHER INFORMATION.

000 
WGUS74 KEWX 020032
FFSSAT
TXC029-020100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
733 PM CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 800 PM
CDT...

AT 728 PM CDT...VERY HEAVY RAINFALL CONTINUES ACROSS NORTHERN BEXAR 
COUNTY.  THE HEAVIEST RAINFALL WITH RATES OF 3 TO 4.5 INCHES PER 
HOUR WAS BETWEEN THE MEDICAL CENTER AREA AND THE SAN ANTONIO 
INTERNATIONAL AIRPORT.  ELSEWHERE...RAINFALL RATES WERE ONE-HALF TO 
2 INCHES PER HOUR.  THE HEAVIEST RAINS WERE DRIFTING TO THE 
NORTHEAST AT 5 MPH.  

THIS IS A VERY DANGEROUS SITUATION.  LEON CREEK...SALADO 
CREEK...OLMOS CREEK...AND APACHE CREEK LIKELY WILL ALL RUN WELL 
ABOVE FLOOD STAGE FOR A FEW MORE HOURS.  THIS WARNING WILL SHORTLY 
BE EXTENDED.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST 
WEATHER INFORMATION.

000 
WGUS74 KEWX 020144
FFSSAT
TXC029-020230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
844 PM CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 800 PM
CDT...

AT 842 PM CDT...VERY HEAVY RAINFALL CONTINUES ACROSS NORTHERN BEXAR 
COUNTY.  THE HEAVIEST RAINFALL WITH RATES OF 2 TO 4 INCHES PER HOUR 
WAS BETWEEN HELOTES...THE SAN ANTONIO INTERNATIONAL AIRPORT AND 
STONE OAK.  ELSEWHERE...RAINFALL RATES WERE ONE-HALF TO 2 INCHES PER 
HOUR.  THE HEAVIEST RAINS WERE DRIFTING TO THE NORTHEAST AT 5 MPH.  

THIS IS A VERY DANGEROUS SITUATION.  WIDESPREAD FLOODING WILL OCCUR 
ACROSS MUCH OF NORTHERN BEXAR COUNTY.  

LEON CREEK...SALADO CREEK...OLMOS CREEK...AND APACHE CREEK LIKELY 
WILL ALL RUN WELL ABOVE FLOOD STAGE FOR A FEW MORE HOURS.  THIS 
WARNING WILL SHORTLY BE EXTENDED.  

TRAVEL IS NOT RECOMMENDED.  STAY TUNED TO LOCAL MEDIA OUTLETS FOR 
THE LATEST WEATHER INFORMATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 4:28 AM CDT	Flash Flood Warning	EWX	Bexar	2 hr
Jul 1, 6:36 AM CDT	Flash Flood Warning	EWX	Bexar	3 hr
Jul 1, 6:56 AM CDT	Flash Flood Warning	EWX	Gonzales, Guadalupe	2 hr
Jul 1, 7:48 AM CDT	Flash Flood Warning	EWX	Atascosa	117 min
Jul 1, 8:50 AM CDT	Flash Flood Warning	EWX	Frio	3 hr
Jul 1, 9:31 AM CDT	Flash Flood Warning	EWX	Atascosa, Bexar	2 hr
Jul 1, 12:07 PM CDT	Flash Flood Warning	EWX	Dimmit, Zavala	3 hr
Jul 1, 12:12 PM CDT	Flash Flood Warning	EWX	Atascosa, Bexar, Frio	3 hr
Jul 1, 3:22 PM CDT	Flash Flood Warning	EWX	Kendall	3 hr
Jul 1, 4:09 PM CDT	Flash Flood Warning	EWX	Medina	3 hr
Jul 1, 6:20 PM CDT	Flash Flood Warning	EWX	Kendall	115 min

Nearby

Flash Flood Warnings in Texas, 2002 Every flash flood warning in 2002

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.