Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 134, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 12, 2001, 9:27 PM CDT for Blanco County, Texas. It was in force for 48 min. No storm report in the archive falls 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.
The facts
- Issued
- Oct 12, 2001, 9:27 PM CDT (02:27 UTC)
- Expired
- Oct 12, 2001, 10:15 PM CDT
- In force
- 48 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Blanco County, TX
The radar
The Austin/San Antonio radar (KEWX), 75 km from the middle of the area, began a volume at 02:39 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, 2.5 hours before the alert went out and 255 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
- 3303 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1597 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 273 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 22.5
The text
As transmitted, in the capitals the NWS used until 2016.
232 WUUS54 KEWX 130229 SVRSAT TXC031-130315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 927 PM CDT FRI OCT 12 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... BLANCO * UNTIL 1015 PM CDT * AT 927 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS DEVELOPING AND MOVING EAST INTO PARTS OF BLANCO COUNTY. MOVEMENT WAS EAST AT 20 MPH. STRONG DAMAGING WINDS...HAIL...AND DEADLY LIGHTNING...ALONG WITH PERIODS OF HEAVY RAIN WILL ACCOMPANY THESE THUNDERSTORMS. LAT...LON 3017 9851 3018 9835 3048 9822 3045 9852
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.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 12, 9:04 PM CDT, 23 minutes earlier.
Area forecast discussion, Oct 12, 9:04 PM CDT, 23 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 904 PM CDT FRI OCT 12 2001 SEVERE STORMS ONGOING ACROSS PORTIONS OF THE EWX CWA AND MUCH MORE EXPECTED. SPEED MAX STILL WEST OF UPPER TROUGH OVER ALONG TEXAS/NEW MEXICO BORDER INTO THE BIG BEND AND APPEARS WILL ROUND THE BASE AROUND OR JUST AFTER MIDNIGHT. GOOD SHEAR...DIFFLUENCE AND CAPES MAINTAIN SEVERE MENTIONS OVERNIGHT. ONLY UPDATES WILL BE MAINLY FOR THE HIGHLIGHTS AND POSSIBLY SOME TWEAKING OF VARIABLES. 04/06/08/PM PERVIOUS DISCUSSION... AREA LOOKS TO BE ON TRACK FOR SEVERE WEATHER TONIGHT...MAINLY OVER NORTHERN AND EASTERN SECTIONS. STORMS SHOULD BEGIN OUT WEST LATE THIS AFTERNOON OR EARLY THIS EVENING AND INTENSIFY AS THEY ENCOUNTER LOW LEVEL JET OVER HILL COUNTRY INTO SOUTH CENTRAL TEXAS. BY LATE EVENING...THUNDERSTORMS SHOULD ALIGN THEMSELVES IN SQUALL LINE FASHION ALONG EASTERN (NORTH SOUTH ORIENTED) ESCARPMENT...MOVING EAST RAPIDLY...WITH TORNADOES AND LARGE HAIL POSSIBLY ACCOMPANYING STORMS. INTENSITY OF LOW SHOULD ALLOW FOR GOOD WRAP AROUND CLOUDINESS THROUGH MUCH OF THE DAY ACROSS EASTERN ZONES...WITH WESTERN ZONES CLEARING RAPIDLY TOMMORROW MORNING. WIDESPREAD LIGHT TO MODERATE PRECIPITATION WITH SOME ELEVATED CONVECTION POSSIBLE AFTER FRONT PASSES LATE TONIGHT AND THIS SHOULD CONTINUE THROUGH ABOUT LATE MORNING. MUCH COLDER AIRMASS WILL BUILD ACROSS AREA SATURDAY NIGHT WITH LOWS DIPPING INTO THE UPPER 30S OVER THE NORTHERN HILLS...40S ELSEWHERE. SUNDAY LOOKS LIKE ABUNDANT SUNSHINE WITH TEMPERATURES IN THE UPPER 70S TO NEAR 80. A BEAUTIFUL WEEK IS IN STORE NEXT WEEK WITH ANOTHER SURGE OF COLDER AIR MOVING ACROSS TUESDAY NIGHT AND WEDNESDAY. SKIES SHOULD REMAIN MOSTLY CLEAR THROUGHOUT MUCH OF THE EXTENDED PERIOD WITH NORTHWEST TO WESTERLY FLOW ALOFT. LOW TEMPERATURES WILL BE IN THE 40S DURING THE FIRST HALF OF THE WORK WEEK...WARMING INTO THE 50S IN THE LATTER HALF. HIGHS GENERALLY IN THE 70S MONDAY THROUGH WEDNESDAY...WARMING INTO THE 80S WEDNESDAY THROUGH FRIDAY. .PRELIMINARY NUMBERS... AUS 62/69/44/77 8700 DRT 57/75/46/80 4100 SAT 62/73/42/78 8400 .EWX...NONE. 02/18
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 7:16 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 59 min |
| Oct 12, 7:21 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 64 min |
| Oct 12, 7:33 PM CDT | Tornado Warning | EWX | Kinney | 57 min |
| Oct 12, 8:08 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Real | 67 min |
| Oct 12, 8:20 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 55 min |
| Oct 12, 8:37 PM CDT | Severe Thunderstorm Warning | EWX | Kerr | 63 min |
| Oct 12, 9:06 PM CDT | Tornado Warning | EWX | Uvalde | 39 min |
| Oct 12, 9:28 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Kerr | 62 min |
| Oct 12, 9:40 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 50 min |
| Oct 12, 9:45 PM CDT | Tornado Warning | EWX | Medina, Uvalde | 60 min |
| Oct 12, 9:52 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kendall | 38 min |
| Oct 12, 9:56 PM CDT | Tornado Warning | EWX | Blanco, Gillespie | 64 min |
| Oct 12, 10:14 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 46 min |
| Oct 12, 10:27 PM CDT | Severe Thunderstorm Warning | EWX | Hays, Travis | 63 min |
| Oct 12, 10:30 PM CDT | Severe Thunderstorm Warning | EWX | Kendall | 30 min |
| Oct 12, 10:44 PM CDT | Tornado Warning | EWX | Medina | 46 min |
| Oct 12, 10:45 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 60 min |
| Oct 12, 10:49 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 71 min |
| Oct 12, 10:55 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 65 min |
| Oct 12, 11:11 PM CDT | Severe Thunderstorm Warning | EWX | Comal | 49 min |
| Oct 12, 11:16 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 59 min |
| Oct 12, 11:25 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell, Guadalupe | 65 min |
| Oct 12, 11:25 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop | 65 min |
| Oct 12, 11:34 PM CDT | Severe Thunderstorm Warning | EWX | Medina | 56 min |
| Oct 12, 11:43 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 47 min |
| Oct 12, 11:51 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 69 min |
| Oct 12, 11:58 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal | 62 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
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.