Alert archive / Texas / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 77
The Storm Prediction Center issued this severe thunderstorm watch at Mar 7, 2000, 10:30 PM CST for 46 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 7, 2000, 10:30 PM CST (04:30 UTC)
- Expired
- Mar 8, 2000, 4:00 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 46 counties
Atascosa County, TX, Austin County, TX, Bandera County, TX, Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Colorado County, TX, Comal County, TX, DeWitt County, TX, Falls County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lampasas County, TX, Lavaca County, TX, Lee County, TX, Leon County, TX, Llano County, TX, Madison County, TX, Mason County, TX, Maverick County, TX, Medina County, TX, Milam County, TX, Real County, TX, Robertson County, TX, Travis County, TX, Trinity County, TX, Uvalde County, TX, Walker County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 69 km from the middle of the area, began a volume at 04:32 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.
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 10:55 PM CST | Severe Thunderstorm Warning | EWX | Kinney | 65 min |
| Mar 8, 2:05 AM CST | Severe Thunderstorm Warning | EWX | Travis, Williamson | 55 min |
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 4.5 hours before the alert went out and 207 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
- 2759 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 2023 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 360 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 23.0
The text
As transmitted, in the capitals the NWS used until 2016.
804 WWUS9 KMKC 080425 SEL7 MKC WW 080425 TXZ000-081000- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 77 STORM PREDICTION CENTER NORMAN OK 1025 PM CST TUE MAR 7 2000 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTH CENTRAL TEXAS EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1030 PM UNTIL 400 AM CST. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 120 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF HONDO TEXAS TO 50 MILES EAST NORTHEAST OF TEMPLE TEXAS. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES SEVERE THUNDERSTORM WATCH NUMBER 74. WATCH NUMBER 74 WILL NOT BE IN EFFECT AFTER 1030 PM CST. CONTINUE...WW 73...WW 75...WW 76... DISCUSSION...WEAK SHORTWAVE TROUGH MOVING EWD FROM NRN MEXICO... POSSIBLY ASSOCIATED WITH MUCH DEEPER THAN PROGGED CLOSED LOW OVER SE CO...HAS MAINTAINED FAVORABLE ENVIRONMENT FOR LARGE HAIL/BOWS IN MODERATELY UNSTABLE AIR /LIS TO MINUS 6/ OVER S TX. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24035. ...CORFIDI 312,0943 284,0973 284,1012 312,0984
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 6:00 PM CST | Severe Thunderstorm Watch | SPC | Bell, Blanco, Bosque, Brown, Burnet, Coleman and 36 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2000Every severe thunderstorm watch in 2000
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.