Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 16, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Feb 18, 1998, 8:14 PM CST for Atascosa County, 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
- Feb 18, 1998, 8:14 PM CST (02:14 UTC)
- Expired
- Feb 18, 1998, 11:15 PM CST
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Atascosa County, TX
The radar
The Austin/San Antonio radar (KEWX), 102 km from the middle of the area, began a volume at 02:15 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, 2.2 hours before the alert went out and 174 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
- 274 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 190214 FFWSAT TXC013-190515- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 814 PM CST WED FEB 18 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1115 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...NORTHERN ATASCOSA COUNTY AT 810 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 2 TO 3 INCHES OF RAIN HAVE FALLEN OVER NORTHERN ATASCOSA COUNTY DURING THE PAST 2 HOURS. MORE THUNDERSTORMS WITH HEAVY RAIN CONTINUE TO DEVELOP OVER FRIO AND ATOSCOSA COUNTIES. ONE TO THREE INCHES OF MORE RAIN IS POSSIBLE OVER NORTHERN ATASCOSA DURING THE NEXT 2 HOURS. 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 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
Special weather statement, Feb 18, 6:00 PM CST, 2 hours 14 minutes before
TXZ171>173-183>194-202>209-217>225-228-191200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CST WED FEB 18 1998 AN UPPER DISTURBANCE WILL PUSH ACROSS SOUTH CENTRAL TEXAS TONIGHT WITH SCATTERED THUNDERSTORMS POSSIBLE THIS EVENING..MAINLY OVER EASTERN AND SOUTHERN SECTIONS. SOME OF THESE STORMS COULD CONTAIN LARGE HAIL. RAINFALL AMOUNTS SHOULD AVERAGE 1/2 INCH OVER SOUTHERN AND EASTERN SECTIONS THIS EVENING WITH LOCAL AMOUNTS NEAR 2 INCHES IN SOME OF THE HEAVIER STORMS. HAZARDOUS WEATHER IS NOT EXPECTED ON THURSDAY. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECASTS...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. ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET WORLD WIDE WEB AT: HTTP://WWW.SRH.NOAA.GOV/EWX OR TUNE TO THE CLOSEST NOAA WEATHER RADIO STATION.
Special weather statement, Feb 18, 6:00 PM CST, 2 hours 14 minutes before
TXZ171>173-183>194-202>209-217>225-228-191200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CST WED FEB 18 1998 AN UPPER DISTURBANCE WILL PUSH ACROSS SOUTH CENTRAL TEXAS TONIGHT WITH SCATTERED THUNDERSTORMS POSSIBLE THIS EVENING..MAINLY OVER EASTERN AND SOUTHERN SECTIONS. SOME OF THESE STORMS COULD CONTAIN LARGE HAIL. RAINFALL AMOUNTS SHOULD AVERAGE 1/2 INCH OVER SOUTHERN AND EASTERN SECTIONS THIS EVENING WITH LOCAL AMOUNTS NEAR 2 INCHES IN SOME OF THE HEAVIER STORMS. HAZARDOUS WEATHER IS NOT EXPECTED ON THURSDAY. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECASTS...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. ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET WORLD WIDE WEB AT: HTTP://WWW.SRH.NOAA.GOV/EWX OR TUNE TO THE CLOSEST NOAA WEATHER RADIO STATION.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 6:03 PM CST | Tornado Warning | EWX | Atascosa | 42 min |
| Feb 18, 6:04 PM CST | Tornado Warning | EWX | Wilson | 41 min |
| Feb 18, 6:17 PM CST | Severe Thunderstorm Warning | EWX | Llano | 58 min |
| Feb 18, 6:29 PM CST | Severe Thunderstorm Warning | EWX | Karnes | 46 min |
| Feb 18, 6:43 PM CST | Tornado Warning | EWX | Karnes | 62 min |
| Feb 18, 6:49 PM CST | Severe Thunderstorm Warning | EWX | Bastrop | 56 min |
| Feb 18, 6:54 PM CST | Severe Thunderstorm Warning | EWX | Burnet | 66 min |
| Feb 18, 7:03 PM CST | Severe Thunderstorm Warning | EWX | Williamson | 57 min |
| Feb 18, 7:22 PM CST | Severe Thunderstorm Warning | EWX | DeWitt, Gonzales | 68 min |
| Feb 18, 7:40 PM CST | Severe Thunderstorm Warning | EWX | Atascosa | 65 min |
| Feb 18, 7:58 PM CST | Severe Thunderstorm Warning | EWX | Frio | 62 min |
| Feb 18, 8:48 PM CST | Severe Thunderstorm Warning | EWX | Atascosa | 57 min |
| Feb 18, 8:57 PM CST | Severe Thunderstorm Warning | EWX | Karnes | 63 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.