Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 57, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1999, 10:54 AM CDT for Bandera County, Real County, Texas. It was in force for 2 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, 10:54 AM CDT (15:54 UTC)
- Expired
- Jun 21, 1999, 1:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bandera County, TX, Real County, TX
The radar
The Laughlin AFB radar (KDFX), 92 km from the middle of the area, began a volume at 15:57 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, 3.9 hours before the alert went out and 135 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
- 958 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 211555 RRA FFWSAT TXC019-385-211800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1054 AM CDT MON JUN 21 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... REAL COUNTY IN TEXAS BANDERA COUNTY IN TEXAS * UNTIL 100 PM CDT * AT AT 1045 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER PARTS OF REAL AND BANDERA COUNTIES... MOVING NORTH AT 15 MPH. THE WEATHER PATTERN BODES WELL FOR CONTINUED RAIN THE NEXT FEW HOURS...CAUSING FLOODING AT LOW WATER CROSSINGS...LOW LYING AREAS AND OTHER FLOOD PRONE AREAS IN REAL AND BANDERA COUNTIES. NEW RAIN CONTINUE TO FORM OVER REAL AND BANDERA COUNTIES. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! IT CAN BE DIFFICULT AT TIME TO JUDGE DEPTH OF WATER AT FLOODED LOW WATER CROSSINGS...AND FLOWING WATER CAN PUSH DESTROY AND STALL VEHICNLES IN LOW WATER CROSSINGS. MOTORISTS SHOULD NOT DRIVE IN FLOOD PRONE AREAS. CREEKS AND STREAMS CAN RISE RAPIDLY... FLOODING ROADS... HIGHWAYS...AND CAMPS IN LOW LYING AREAS.
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, 5 hours 48 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 54 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 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, 10:01 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 21, 10:45 AM CDT | Flash Flood Warning | EWX | Wilson | 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; radar from the NEXRAD Level II archive.