Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 93, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 12, 1999, 5:22 PM CDT for Llano 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
- Jul 12, 1999, 5:22 PM CDT (22:22 UTC)
- Expired
- Jul 12, 1999, 7:30 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Llano County, TX
The radar
The Ft Hood radar (KGRK), 124 km from the middle of the area, began a volume at 22:26 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, 10.4 hours before the alert went out and 255 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
- 806 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 511 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 31 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 KEWX 122228 FFWSAT TXC299-130030- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 522 PM CDT MON JUL 12 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... LLANO COUNTY * UNTIL 730 PM CDT *NATIONAL WEATHER SERVICE DOPPLER RADARSS INDICATE RAINFALL RATES OF 3 INCHES AN HOUR IN NORTHWEST LLANO COUNTY. THE STORMS PRODUCING THESE RAINS ARE MOVING NORTHEAST AT 15 MPH. STATE HIGHWAY 16 NORTH OF LLANO WILL BE IMPACTED BY THE RAINS. FAST RISES DOWN MINOR STREAMS AND CREEKS ACROSS LLANO COUNTY WILL FLOOD SECONDARY ROADS...LOW BRIDGES AND CROSSINGS. MOTORISTS SHOULD vBE AWARE THAT WATER IN THESE CROSSINGS CAN RISE VERY QUICKLY TO A LEVEL THAT WILL STALL AUTOS AND FLOAT THEM DOWNSTREAM.
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, Jul 12, 3:15 PM CDT, 2 hours 7 minutes before
TXZ171>173-183>194-202>209-217>225-228-131400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 315 PM CDT MON JUL 12 1999 ...HEAVY RAINFALL IS EXPECTED TO RETURN OVER THE HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS BY TUESDAY MORNING... AN UPPER LEVEL DISTURBANCE WILL MOVE SOUTH INTO CENTRAL TEXAS LATE TONIGHT AND PROVIDE A FOCUS FOR HEAVY RAINFALL OVER THE HILL COUNTRY AND NORTHERN PORTIONS OF SOUTH CENTRAL TEXAS BY EARLY TUESDAY MORNING. LOCALLY HEAVY RAINFALL CAN BE EXPECTED IN THE NORTHERNMOST PORTIONS OF THE HILL COUNTRY THIS EVENING AS SHOWERS AND THUNDERSTORMS WILL REMAIN FOCUSED ALONG AND 30 MILES EITHER SIDE OF AN OZONA TO TEMPLE LINE THIS EVENING. THE FOCUS FOR HEAVY RAINFALL WILL GRADUALLY MOVE SOUTH INTO THE REST OF THE HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS EARLY TUESDAY MORNING WITH LOCALLY HEAVY RAINFALL AMOUNTS OF 1 TO 2 INCHES POSSIBLE BY MIDDAY TUESDAY. THE GROUNDS OVER MOST OF THE HILL COUNTRY REMAIN NEARLY SATURATED...SO THESE HEAVY RAINFALL AMOUNTS COULD PRODUCE LOCALIZED FLOODING. THIS FOCUS FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE TO SHIFT SOUTHWARD ACROSS SOUTH CENTRAL TEXAS LATE TUESDAY. THOSE WITH INTERESTS IN THE HILL COUNTRY AND AREAS NORTH OF AUSTIN TONIGHT SHOULD MONITOR THE LOCAL MEDIA OUTLETS FOR ADDITIONAL WEATHER STATEMENTS AND POSSIBLE WATCHES OR WARNINGS.
Special weather statement, Jul 12, 3:15 PM CDT, 2 hours 7 minutes before
TXZ171>173-183>194-202>209-217>225-228-131400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 315 PM CDT MON JUL 12 1999 ...HEAVY RAINFALL IS EXPECTED TO RETURN OVER THE HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS BY TUESDAY MORNING... AN UPPER LEVEL DISTURBANCE WILL MOVE SOUTH INTO CENTRAL TEXAS LATE TONIGHT AND PROVIDE A FOCUS FOR HEAVY RAINFALL OVER THE HILL COUNTRY AND NORTHERN PORTIONS OF SOUTH CENTRAL TEXAS BY EARLY TUESDAY MORNING. LOCALLY HEAVY RAINFALL CAN BE EXPECTED IN THE NORTHERNMOST PORTIONS OF THE HILL COUNTRY THIS EVENING AS SHOWERS AND THUNDERSTORMS WILL REMAIN FOCUSED ALONG AND 30 MILES EITHER SIDE OF AN OZONA TO TEMPLE LINE THIS EVENING. THE FOCUS FOR HEAVY RAINFALL WILL GRADUALLY MOVE SOUTH INTO THE REST OF THE HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS EARLY TUESDAY MORNING WITH LOCALLY HEAVY RAINFALL AMOUNTS OF 1 TO 2 INCHES POSSIBLE BY MIDDAY TUESDAY. THE GROUNDS OVER MOST OF THE HILL COUNTRY REMAIN NEARLY SATURATED...SO THESE HEAVY RAINFALL AMOUNTS COULD PRODUCE LOCALIZED FLOODING. THIS FOCUS FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE TO SHIFT SOUTHWARD ACROSS SOUTH CENTRAL TEXAS LATE TUESDAY. THOSE WITH INTERESTS IN THE HILL COUNTRY AND AREAS NORTH OF AUSTIN TONIGHT SHOULD MONITOR THE LOCAL MEDIA OUTLETS FOR ADDITIONAL WEATHER STATEMENTS AND POSSIBLE WATCHES OR WARNINGS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 5:49 PM CDT | Flash Flood Warning | EWX | Williamson | 2 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.