Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 43, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 12, 1999, 9:20 PM CDT for Bexar County, Comal County, Guadalupe County, Texas. It was in force for 100 min. 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 12, 1999, 9:20 PM CDT (02:20 UTC)
- Expired
- Jun 12, 1999, 11:00 PM CDT
- In force
- 100 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bexar County, TX, Comal County, TX, Guadalupe County, TX
The radar
The Austin/San Antonio radar (KEWX), 24 km from the middle of the area, began a volume at 02:24 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
Corpus Christi, TX (KCRP), launched 00:00Z, 2.3 hours before the alert went out and 227 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
- 2849 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 841 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEWX 130222 FFWSAT TXC029-091-187-130345- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 920 PM CDT SAT JUN 12 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... GUADALUPE, COMAL, AND BEXAR COUNTIES IN TEXAS * UNTIL 1100 PM CDT EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...LOW WATER CROSSINGS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. 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. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
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 12, 6:00 PM CDT, 3 hours 20 minutes before
TXZ171>173-183>194-202>209-217>225-228-131000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT SAT JUN 12 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT AND SUNDAY ACROSS THE WESTERN SECTIONS OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. THIS SLIGHT RISK AREA INCLUDES THE CITIES OF DEL RIO AND KERRVILLE. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE OVER THE REST OF THE AREA TONIGHT AND SUNDAY. STRONG THUNDERSTORMS HAVE AGAIN DEVELOPED OVER FAR WEST TEXAS IN THE BIG BEND REGION. THESE THUNDERSTORMS WILL LIKELY MOVE EASTWARD INTO THE WESTERN SECTIONS OF SOUTH CENTRAL TEXAS THIS EVENING. THE MAIN THREAT WILL BE FROM LARGE HAIL AND DAMAGING WINDS. RAINFALL AMOUNTS WILL AVERAGE ONE QUARTER TO ONE HALF INCH WITH LOCALLY HEAVY AMOUNTS OF ONE TO THREE INCHES POSSIBLE MAINLY OVER THE WESTERN HILL COUNTRY AND SOUTH CENTRAL TEXAS. CAMPERS AND OTHERS INVOLVED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER IF A THUNDERSTORM OCCURS. 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.
Special weather statement, Jun 12, 6:00 PM CDT, 3 hours 20 minutes before
TXZ171>173-183>194-202>209-217>225-228-131000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT SAT JUN 12 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT AND SUNDAY ACROSS THE WESTERN SECTIONS OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. THIS SLIGHT RISK AREA INCLUDES THE CITIES OF DEL RIO AND KERRVILLE. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE OVER THE REST OF THE AREA TONIGHT AND SUNDAY. STRONG THUNDERSTORMS HAVE AGAIN DEVELOPED OVER FAR WEST TEXAS IN THE BIG BEND REGION. THESE THUNDERSTORMS WILL LIKELY MOVE EASTWARD INTO THE WESTERN SECTIONS OF SOUTH CENTRAL TEXAS THIS EVENING. THE MAIN THREAT WILL BE FROM LARGE HAIL AND DAMAGING WINDS. RAINFALL AMOUNTS WILL AVERAGE ONE QUARTER TO ONE HALF INCH WITH LOCALLY HEAVY AMOUNTS OF ONE TO THREE INCHES POSSIBLE MAINLY OVER THE WESTERN HILL COUNTRY AND SOUTH CENTRAL TEXAS. CAMPERS AND OTHERS INVOLVED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER IF A THUNDERSTORM OCCURS. 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.
Special weather statement, Jun 12, 8:17 PM CDT, 1 hour 3 minutes before
TXZ191-205>208-130215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 817 PM CDT SAT JUN 12 1999 ...SEVERE THUNDERSTORM WARNING FOR BASTROP AND CALDWELL COUNTIES HAS EXPIRED... THE SEVERE THUNDERSTORMS OVER BASTROP AND CALDWELL COUNTIES HAVE DECREASED IN INTENSITY...HOWEVER THE STORMS REMAINED STRONG AND COULD BECOME SEVERE AGAIN AS THEY MOVE SOUTHWESTWARD AT NEAR 25 MPH TOWARD COMAL AND GUADALUPE COUNTIES. THIS CLUSTER OF STRONG THUNDERSTORMS FROM BETWEEN NEW BRAUNFELS... BUDA AND LULING CONTINUES TO MOVE SOUTHWESTWARD NEAR I35 TOWARDS NEW BRAUNFELS AND CANYON LAKE. THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING FOR THE NEXT HOUR. CAMPERS...BOATERS AND OTHERS INVOLVED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER IF A THUNDERSTORM THREATENS.
Special weather statement, Jun 12, 8:17 PM CDT, 1 hour 3 minutes before
TXZ191-205>208-130215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 817 PM CDT SAT JUN 12 1999 ...SEVERE THUNDERSTORM WARNING FOR BASTROP AND CALDWELL COUNTIES HAS EXPIRED... THE SEVERE THUNDERSTORMS OVER BASTROP AND CALDWELL COUNTIES HAVE DECREASED IN INTENSITY...HOWEVER THE STORMS REMAINED STRONG AND COULD BECOME SEVERE AGAIN AS THEY MOVE SOUTHWESTWARD AT NEAR 25 MPH TOWARD COMAL AND GUADALUPE COUNTIES. THIS CLUSTER OF STRONG THUNDERSTORMS FROM BETWEEN NEW BRAUNFELS... BUDA AND LULING CONTINUES TO MOVE SOUTHWESTWARD NEAR I35 TOWARDS NEW BRAUNFELS AND CANYON LAKE. THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING FOR THE NEXT HOUR. CAMPERS...BOATERS AND OTHERS INVOLVED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER IF A THUNDERSTORM THREATENS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 7:18 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Caldwell | 57 min |
| Jun 12, 8:30 PM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| Jun 12, 8:35 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal, Guadalupe, Hays | 55 min |
| Jun 12, 9:18 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal, Guadalupe | 57 min |
| Jun 12, 9:18 PM CDT | Severe Thunderstorm Warning | EWX | Kendall | 57 min |
| Jun 12, 10:10 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 60 min |
| Jun 12, 10:20 PM CDT | Severe Thunderstorm Warning | EWX | Bandera | 65 min |
| Jun 12, 11:01 PM CDT | Flash Flood Warning | EWX | Bandera, Kerr | 2 hr |
| Jun 12, 11:01 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr | 2 hr |
| Jun 12, 11:35 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick, Uvalde, Zavala | 70 min |
| Jun 12, 11:35 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 70 min |
| Jun 12, 11:51 PM CDT | Severe Thunderstorm Warning | EWX | Real | 64 min |
| Jun 13, 12:39 AM CDT | Flash Flood Warning | EWX | Uvalde, Zavala | 116 min |
| Jun 13, 1:00 AM CDT | Severe Thunderstorm Warning | EWX | Frio, Medina | 75 min |
| Jun 13, 3:26 PM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
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.