Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 55, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1999, 10:01 AM 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 counties it named.
The facts
- Issued
- Jun 21, 1999, 10:01 AM CDT (15:01 UTC)
- Expired
- Jun 21, 1999, 1:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Bexar County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 3.0 hours before the alert went out and 223 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.
- Mixed-layer CAPE
- 205 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- -22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 211502 FFWSAT TXC029-211800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1001 AM CDT MON JUN 21 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... BEXAR COUNTY IN TEXAS * UNTIL 100 PM CDT * AT 955 AM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A BAND OF HEAVY SHOWERS IN SOUTHEASTERN BEXAR COUNTY NEAR BRAUNIG LAKE... MOVING NORTHWEST AT 15 MPH. * DOPPLER RADAR ESTIMATED 1.5 TO 2 INCHES AN HOUR RAINFALL RATE. THE LINE OF SHOWERS WILL MOVE SLOWLY NORTH THROUGH BEXAR COUNTY AND CROSS AREAS THAT HAVE RECEIVED OVER 2 INCHES OF RAIN IN THE PAST 24 HOURS. THE GROUNDS OVER WESTERN PORTIONS OF BEXAR COUNTY ARE ALREADY SATURATED AND THE RAINS WILL QUICKLY RUNOFF INTO CREEKS AND STREAMS. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! CFM AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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.
In the hours before
Special weather statement, Jun 21, 5:06 AM CDT, 4 hours 55 minutes before
TXZ171>173-183>194-202>209-217>225-228-212300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT MON JUN 21 1999 ...FLASH FLOOD WATCH IN EFFECT TODAY... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS TODAY. A STRONG...DEEP FLOW OF MOISTURE FROM THE GULF OF MEXICO AS WELL AS UPPER LEVEL MOISTURE FROM PACIFIC HURRICANE ADRIAN WILL INTERACT WITH UPPER LEVEL DISTURBANCES TO TRIGGER THE RAINS. RAINFALL AMOUNTS OF 1 TO 2 INCHES FELL ACROSS MUCH OF SOUTH CENTRAL TEXAS OVERNIGHT. AN ADDITIONAL 1 TO 3 INCHES OF RAIN ON AVERAGE IS EXPECTED TODAY. SOILS ARE SOAKED FROM RAIN THE PAST TWO DAYS AND ADDITIONAL RAINFALL WILL RUNOFF QUICKLY FLOODING LOW LYING AREAS AND LOW WATER CROSSINGS. AREA CREEKS AND STREAMS MAY REACH BANKFULL QUICKLY IN HEAVIER DOWNPOURS. MOTORISTS SHOULD EXERCISE EXTRA CAUTION THIS MORNING. CAMPERS AND OTHER OUTDOOR ENTHUSIASTS ARE URGED TO MONITOR THE WEATHER BE PREPARED TO SEEK HIGHER GROUND SHOULD FLOODING BECOME IMMINENT. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL 2TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, Jun 21, 6:00 AM CDT, 4 hours 1 minute before
TXZ171>173-183>194-202>209-217>225-228-212300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT MON JUN 21 1999 ...FLASH FLOOD WATCH IN EFFECT TODAY... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS TODAY. A STRONG...DEEP FLOW OF MOISTURE FROM THE GULF OF MEXICO AS WELL AS UPPER LEVEL MOISTURE FROM PACIFIC HURRICANE ADRIAN WILL INTERACT WITH UPPER LEVEL DISTURBANCES TO TRIGGER THE RAINS. RAINFALL AMOUNTS OF 1 TO 2 INCHES FELL ACROSS MUCH OF SOUTH CENTRAL TEXAS OVERNIGHT. AN ADDITIONAL 1 TO 3 INCHES OF RAIN ON AVERAGE IS EXPECTED TODAY. SOILS ARE SOAKED FROM RAIN THE PAST TWO DAYS AND ADDITIONAL RAINFALL WILL RUNOFF QUICKLY FLOODING LOW LYING AREAS AND LOW WATER CROSSINGS. AREA CREEKS AND STREAMS MAY REACH BANKFULL QUICKLY IN HEAVIER DOWNPOURS. MOTORISTS SHOULD EXERCISE EXTRA CAUTION THIS MORNING. CAMPERS AND OTHER OUTDOOR ENTHUSIASTS ARE URGED TO MONITOR THE WEATHER BE PREPARED TO SEEK HIGHER GROUND SHOULD FLOODING BECOME IMMINENT. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 2:12 AM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| Jun 21, 10:45 AM CDT | Flash Flood Warning | EWX | Wilson | 2 hr |
| Jun 21, 10:54 AM CDT | Flash Flood Warning | EWX | Bandera, Real | 2 hr |
| Jun 21, 11:35 AM CDT | Flash Flood Warning | EWX | Comal | 115 min |
| Jun 21, 12:19 PM CDT | Flash Flood Warning | EWX | Guadalupe | 101 min |
| Jun 21, 1:11 PM CDT | Flash Flood Warning | EWX | Hays | 3 hr |
| Jun 21, 1:18 PM CDT | Flash Flood Warning | EWX | Comal, Guadalupe | 2 hr |
| Jun 21, 1:55 PM CDT | Flash Flood Warning | EWX | Caldwell | 2 hr |
| Jun 21, 2:45 PM CDT | Flash Flood Warning | EWX | Caldwell, Travis | 3 hr |
| Jun 21, 3:20 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| Jun 21, 3:51 PM CDT | Flash Flood Warning | EWX | Medina | 99 min |
| Jun 21, 5:20 PM CDT | Flash Flood Warning | EWX | Williamson | 70 min |
Nearby
Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999
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.