Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 32, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Mar 16, 1998, 12:46 AM CST for 4 counties in Texas. It was in force for 3 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
- Mar 16, 1998, 12:46 AM CST (06:46 UTC)
- Expired
- Mar 16, 1998, 3:45 AM CST
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bandera County, TX, Bexar County, TX, Frio County, TX, Medina County, TX
The radar
The Austin/San Antonio radar (KEWX), 101 km from the middle of the area, began a volume at 06:46 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 00:00Z, 6.8 hours before the alert went out and 179 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
- 1211 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 160646 FFWSAT TXC019-029-031-053-091-163-171-259-265-299-325-160945- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1246 AM CST MON MAR 16 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 345 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...BANDERA COUNTY...BEXAR COUNTY...BLANCO COUNTY ...BURNET COUNTY...COMAL COUNTY...FRIO COUNTY...GILLESPIE COUNTY ...KENDALL COUNTY...KERR COUNTY...LLANO COUNTY...MEDINA COUNTY NATIONAL WEATHER SERVICE RADAR INDICATED AN AREA OF HEAVY RAIN FROM LLANO AND BURNET COUNTIES SOUTHWESTWARD ACROSS THE CENTRAL AND EASTERN HILL COUNTRY AND SOUTHWARD INTO FRIO COUNTY. THIS AREA IS MOVING VERY SLOWLY AND 1 TO 2 INCHES OF RAINS ARE EXPECTED ACROSS MOST OF THE AREA WITH ISOLATED 4 TO 6 INCHES POSSIBLE. THERE LIKELY WILL BE SERIOUS FLOODING ACROSS MANY AREAS DURING THE NIGHT. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A, SMALL ONE...ON FOOT TO ESCAPE RISING WATER 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
Local storm report, Mar 15, 8:56 PM CST, 3 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
856 PM CST SUN MAR 15 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0400 PM COMSTOCK 5NW TX .75 INCH HAIL
03/15/98 VAL VERDE REPORTED BY COOP OBSERVER
AT KELLY RANCH
0640 PM LANGTRY 13W TX .75 INCH HAIL
03/15/98 VAL VERDE RAINFALL OD .80 IN 20-30 MINLocal storm report, Mar 15, 8:56 PM CST, 3 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
856 PM CST SUN MAR 15 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0400 PM COMSTOCK 5NW TX .75 INCH HAIL
03/15/98 VAL VERDE REPORTED BY COOP OBSERVER
AT KELLY RANCH
0640 PM LANGTRY 13W TX .75 INCH HAIL
03/15/98 VAL VERDE RAINFALL OD .80 IN 20-30 MINThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 7:57 PM CST | Flash Flood Warning | EWX | Val Verde | 2 hr |
| Mar 15, 8:45 PM CST | Flash Flood Warning | EWX | Edwards | 3 hr |
| Mar 15, 11:44 PM CST | Flash Flood Warning | EWX | Dimmit, Zavala | 3 hr |
| Mar 15, 11:53 PM CST | Severe Thunderstorm Warning | EWX | Zavala | 67 min |
| Mar 16, 12:28 AM CST | Severe Thunderstorm Warning | EWX | Frio | 62 min |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Gillespie, Kendall, Kerr | 3 hr |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Blanco, Comal | 3 hr |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Burnet, Llano | 3 hr |
| Mar 16, 1:31 AM CST | Severe Thunderstorm Warning | EWX | Atascosa | 59 min |
| Mar 16, 2:32 AM CST | Severe Thunderstorm Warning | EWX | Comal | 58 min |
| Mar 16, 3:01 AM CST | Severe Thunderstorm Warning | EWX | Guadalupe, Hays | 59 min |
| Mar 16, 3:01 AM CST | Severe Thunderstorm Warning | EWX | Wilson | 59 min |
Nearby
Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998
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.