Alert archive / Texas / Tornado Warnings in 2000
Tornado Warning 10, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at Mar 10, 2000, 5:26 PM CST for Llano County, Texas. It was in force for 49 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Mar 10, 2000, 5:26 PM CST (23:26 UTC)
- Expired
- Mar 10, 2000, 6:15 PM CST
- In force
- 49 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Llano County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 10, 5:40 PM CST | Tornado F1 | Llano, TX | A short-lived tornado was observed by officers from the Sheriff's Department as it moved toward the east-northeast. It was located in open country and damage was limited to trees blown down along its path. |
| Mar 10, 5:41 PM CST | Tornado F0 | Llano, TX | A second tornado was sighted by Sheriff's Department officers in open country. No damage was indicated. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 10, 4:00 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.4 hours before the alert went out and 248 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
- 2482 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 9.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS54 KEWX 102327 TORSAT TXC299-110015- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 526 PM CST FRI MAR 10 2000 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... LLANO COUNTY * UNTIL 615 PM CST * AT 526 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH A POSSIBLE TORNADO 6 MILES WEST OF LLANO... MOVING SOUTHEAST AT 20 MPH. HAIL TO THE SIZE OF PEACHES WAS REPORTED 4 WEST OF LLANO. THIS REPLACES THE SEVERE THUNDERSTORM WARNING. .END/ LAT...LON 3075 9896 3053 9889 3053 9842 3102 9868
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 10, 4:24 PM CST | Severe Thunderstorm Warning | EWX | Llano | 36 min |
| Mar 10, 4:57 PM CST | Severe Thunderstorm Warning | EWX | Llano | 48 min |
| Mar 10, 5:18 PM CST | Severe Thunderstorm Warning | EWX | DeWitt, Gonzales, Karnes | 57 min |
Nearby
Tornado Warnings in Texas, 2000Every tornado warning in 2000Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.