Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 65, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1999, 3:51 PM CDT for Medina County, Texas. It was in force for 99 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 21, 1999, 3:51 PM CDT (20:51 UTC)
- Expired
- Jun 21, 1999, 5:30 PM CDT
- In force
- 99 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Medina County, TX
The radar
The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 20:55 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, 8.9 hours before the alert went out and 168 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 KEWX 212054 FFWSAT TXC325-212230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 351 PM CDT MON JUN 21 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... MEDINA COUNTY IN TEXAS * UNTIL 530 PM CDT AT 355 PM DOPPLER RADAR INDICATED A BAND OF HEAVY RAINS OVER MEDINA COUNTY...MOVING NORTH AT 15 MPH. NEW RAIN FORMATION WILL CONTINUE THE NEXT 1 TO 2 HOURS. 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 MEDINA COUNTY. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! IT CAN BE DIFFICULT AT TIMES TO JUDGE DEPTH OF WATER AT FLOODED LOW WATER CROSSINGS...AND FLOWING WATER CAN PUSH DESTROY AND STALL VEHICLES IN LOW WATER CROSSINGS. MOTORISTS SHOULD NOT DRIVE IN FLOOD PRONE AREAS. 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. AGAIN...DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.t TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
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
Local storm report, Jun 21, 1:40 PM CDT, 2 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
140 PM CDT MON JUN 21 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1230 PM TX FLOODING
06/21/99 BEXAR KOA CAMPGROUND LOWER LEVELS
FLOODED, SALADO CREEK
FLOODING THE ACCESS ROADS
AT I-35 AND LOOP 410
0120 PM TX FLOODING
06/21/99 REAL FARM ROAD 337 CLOSED
BETWEEN LEAKEY AND CAMP
WOOD
0120 PM TX FLOODING
06/21/99 UVALDE STATE HIGHWAY 55 CLOSED
NORTH OF UVALDELocal storm report, Jun 21, 1:40 PM CDT, 2 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
140 PM CDT MON JUN 21 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1230 PM TX FLOODING
06/21/99 BEXAR KOA CAMPGROUND LOWER LEVELS
FLOODED, SALADO CREEK
FLOODING THE ACCESS ROADS
AT I-35 AND LOOP 410
0120 PM TX FLOODING
06/21/99 REAL FARM ROAD 337 CLOSED
BETWEEN LEAKEY AND CAMP
WOOD
0120 PM TX FLOODING
06/21/99 UVALDE STATE HIGHWAY 55 CLOSED
NORTH OF UVALDEThe 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, 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, 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.