Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 56, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1999, 10:45 AM CDT for Wilson 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, 10:45 AM CDT (15:45 UTC)
- Expired
- Jun 21, 1999, 1:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 59 km from the middle of the area, began a volume at 16:00 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 12:00Z, 3.8 hours before the alert went out and 176 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 KEWX 211544 FFWSAT TXC493-211800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1045 AM CDT MON JUN 21 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... WILSON COUNTY IN TEXAS * UNTIL 100 PM CDT *DOPPLER RADAR INDICATED HEAVY SHOWERS WITH RAINFALL OF 2 INCHES AN HOUR NEAR THE COMMUNITY OF CALAVERAS. THIS IS PART OF A LINE WHICH IS MOVING NORTHEAST THROUGH THE COUNTY AT 15 MPH. SMALL STREAM AND CREEKS WILL FLOOD SECONDARY ROADS...LOW BRIDGES AND CROSSINGS THE NEXT FEW HOURS. MOTORISTS SHOULD NOT ENTER FLOODED BRIDGES AND CROSSINGS AS THIS CAN EASILY BE A LETHAL SITUATION.>
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 39 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 45 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, 10:54 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; radar from the NEXRAD Level II archive.