Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 142, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 12, 2001, 10:49 PM CDT for Bexar County, Texas. It was in force for 71 min. 1 report 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
- Oct 12, 2001, 10:49 PM CDT (03:49 UTC)
- Expired
- Oct 13, 2001, 12:00 AM CDT
- In force
- 71 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 59 km from the middle of the area, began a volume at 03:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 12, 11:50 PM CDT | Hail 1 | San Antonio, TX |
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 |
|---|---|---|---|
| Oct 12, 9:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 3.8 hours before the alert went out and 221 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.
147
WUUS54 KEWX 130350
SVRSAT
TXC029-130500-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1049 PM CDT FRI OCT 12 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
BEXAR
* UNTIL MIDNIGHT
* AT 1048 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF SEVERE THUNDERSTORMS DEVELOPING TOWARD BEXAR COUNTY. THESE
THUNDERSTORMS WILL AFFECT BEXAR COUNTY...INCLUDING THE
SAN ANTONIO METRO AREA THROUGH MIDNIGHT. MOVEMENT WAS EAST
AT 20 MPH.
STRONG DAMAGING WIND...HAIL...FREQUENT DEADLY LIGHTNING AND
PERIODS OF HEAVY RAINS WILL COME WITH THESE THUNDERSTORMS.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS LOW WATER CROSSINGS...
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND
RIVERS MAY ALSO RISE. SEEK HIGHER GROUND IF THREATENED BY FLOOD
WATERS.
LAT...LON 2931 9873 2917 9843 2949 9820 2970 9850
2969 9876What 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, 1 hour 45 minutes earlier.
Area forecast discussion, Oct 12, 9:04 PM CDT, 1 hour 45 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
In the hours before
Local storm report, Oct 12, 9:47 PM CDT, 1 hour 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
947 PM CDT FRI OCT 12 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0930 PM DEL RIO TX 1.25 INCH HAIL
10/12/01 VAL VERDE REPORTED BY LAW
ENFORCEMENT
0945 PM 5 N SABINAL TX TORNADO
10/12/01 UVALDE REPORTED BY CO-OP
OBSERVERSLocal storm report, Oct 12, 10:03 PM CDT, 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
1003 PM CDT FRI OCT 12 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0930 PM DEL RIO TX 1.25 INCH HAIL
10/12/01 VAL VERDE REPORTED BY LAW
ENFORCEMENT
0945 PM 5 N SABINAL TX TORNADO
10/12/01 UVALDE REPORTED BY CO-OP
OBSERVERS
0950 PM STONEWALL TX TORNADO
10/12/01 GILLESPIE SEMI-TRACTOR
TRAILERS OVER TURNED OVERTURNED
REPORTED BY
EMERGENCY MANAGERS
PMThe 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, 9:27 PM CDT | Severe Thunderstorm Warning | EWX | Blanco | 48 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, 10:55 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.