Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 78, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 10, 1999, 1:08 AM CDT for Edwards County, Texas. It was in force for 62 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
- May 10, 1999, 1:08 AM CDT (06:08 UTC)
- Expired
- May 10, 1999, 2:10 AM CDT
- In force
- 62 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Edwards County, TX
The radar
The Laughlin AFB radar (KDFX), 79 km from the middle of the area, began a volume at 06:08 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, 6.1 hours before the alert went out and 86 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
- 4039 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1039 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 15.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, May 9, 8:15 PM CDT, 4 hours 53 minutes before
TXZ171>173-183>194-202>209-217>225-228-101100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 815 PM CDT SUN MAY 9 1999 ...A TORNADO WATCH IS IN EFFECT TIL 12 MIDNIGHT FOR THE COUNTIES OF VAL VERDE...KINNEY...AND EDWARDS... STRONG THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHWEST TEXAS NEAR VAL VERDE COUNTY AND WILL MOVE EASTWARD TONIGHT. THE EXTREME WESTERN PORTIONS OF THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS HAVE A CHANCE OF THUNDERSTORM DEVELOPMENT TONIGHT WITH SOME STORMS POSSIBLY SEVERE. COUNTIES IN THE WATCH AREA MAY HAVE THE DEVELOPMENT OF TORNADOES... HAIL TO THREE INCHES IN DIAMETER...STRONG THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT IS ALSO EXPECTED MONDAY MORNING AREAWIDE THEN BECOMING PARTLY CLOUDY MONDAY AFTERNOON. 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.
Special weather statement, May 9, 8:15 PM CDT, 4 hours 53 minutes before
TXZ171>173-183>194-202>209-217>225-228-101100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 815 PM CDT SUN MAY 9 1999 ...A TORNADO WATCH IS IN EFFECT TIL 12 MIDNIGHT FOR THE COUNTIES OF VAL VERDE...KINNEY...AND EDWARDS... STRONG THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHWEST TEXAS NEAR VAL VERDE COUNTY AND WILL MOVE EASTWARD TONIGHT. THE EXTREME WESTERN PORTIONS OF THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS HAVE A CHANCE OF THUNDERSTORM DEVELOPMENT TONIGHT WITH SOME STORMS POSSIBLY SEVERE. COUNTIES IN THE WATCH AREA MAY HAVE THE DEVELOPMENT OF TORNADOES... HAIL TO THREE INCHES IN DIAMETER...STRONG THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT IS ALSO EXPECTED MONDAY MORNING AREAWIDE THEN BECOMING PARTLY CLOUDY MONDAY AFTERNOON. 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.
Special weather statement, May 9, 10:45 PM CDT, 2 hours 23 minutes before
TXZ171-172-183>190-101100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1045 PM CDT SUN MAY 9 1999 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT TIL 4 AM CDT FOR THE COUNTIES OF VAL VERDE...EDWARDS...REAL...KERR...KENDALL... BLANCO...GILLESPIE...LLANO AND BURNET... STRONG THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER SOUTHWEST TEXAS TONIGHT AND MOVE EASTWARD INTO THE TEXAS HILL COUNTRY. COUNTIES IN THE WATCH AREA MAY HAVE THE DEVELOPMENT OF HAIL UP TO TWO INCHES IN DIAMETER...STRONG THUNDERSTORM WIND GUSTS TO 60 MPH AND DANGEROUS LIGHTNING. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT IS ALSO EXPECTED MONDAY MORNING AREAWIDE THEN BECOMING PARTLY CLOUDY MONDAY AFTERNOON. 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 |
|---|---|---|---|---|
| May 9, 11:07 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Val Verde | 58 min |
| May 9, 11:58 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 62 min |
| May 10, 12:18 AM CDT | Tornado Warning | EWX | Edwards | 62 min |
| May 10, 12:25 AM CDT | Flash Flood Warning | EWX | Edwards | 3 hr |
| May 10, 12:56 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 59 min |
| May 10, 10:02 AM CDT | Severe Thunderstorm Warning | EWX | Williamson | 58 min |
| May 10, 11:01 AM CDT | Severe Thunderstorm Warning | EWX | Williamson | 59 min |
| May 10, 1:37 PM CDT | Flash Flood Warning | EWX | Burnet, Llano | 3 hr |
| May 10, 2:08 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| May 10, 2:40 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 65 min |
| May 10, 3:49 PM CDT | Severe Thunderstorm Warning | EWX | Lee | 56 min |
| May 10, 4:50 PM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
| May 10, 5:05 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 45 min |
| May 10, 6:57 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell, Gonzales, Guadalupe | 48 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm 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.