Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 5, NWS Austin/San Antonio, TX

February 15, 2001Edwards County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 15, 2001, 10:07 PM CST for Edwards County, Texas. It was in force for 38 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
Feb 15, 2001, 10:07 PM CST (04:07 UTC)
Expired
Feb 15, 2001, 10:45 PM CST
In force
38 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Edwards County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 15, 9:15 PM CSTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 4.1 hours before the alert went out and 85 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2001-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 616 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2001-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
616 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
83 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

169 
WUUS54 KEWX 160408
SVRSAT
TXC137-160445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1007 PM CST THU FEB 15 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  EDWARDS COUNTY

* UNTIL 1045 PM CST

* AT 1007 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EDWARDS COUNTY...OR ABOUT 35 MILES 
SOUTH   OF SONORA...MOVING NORTHEAST AT 50 MPH.

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.

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.


LAT...LON 3004 10072 2992 10057 3016 10025 3029 10042

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 Feb 15, 9:10 PM CST, 57 minutes earlier.

Area forecast discussion, Feb 15, 9:10 PM CST, 57 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
910 PM CST THU FEB 15 2001

SELS HAS ISSUED SEVERE THUNDERSTORM WATCH 20 FOR A GOOD PORTION OF
CWA VALID UNTIL 2 AM CST.  SINCE ZONES ALREADY MENTION THUNDERSTORMS
WITH SOME LOCALLY SEVERE IN THE BODY MOST LIKELY WONT UPDATE ATTM.

ONE HEFTY CALL HAS MADE ITS WAY ACROSS THE RIO GRANDE AND ACROSS VAL
VERDE COUNTY INTO EDWARDS COUNTY DURING THE PAST HOUR.  NO REPORTS
OF SEVERE WEATHER WITH THIS STORM AS OF YET BUT RADAR DISPLAYS HAD
GOOD DBZ AND VIL LEVELS WITH THE CELL PLUS A TVS ALARM.  FIRST WENT
WITH A SEVERE THUNDERSTORM WARNING FOR VAL VERDE COUNTY AS IT MOVED
ACROSS THE RIVER THEN UPGRADED TO TORNADO WARNING WHEN THE CELL
STARTED INCREASING IN INTENSITY AND BECAME A RIGHT MOVER.  THEN THE
TVS ALARMED.  STILL MORE ACTIVITY SOUTHWEST OF THIS INITIAL
DEVELOPMENT SO LOOKS LIKE THE REST OF THIS EVENING AND EARLY FRIDAY
MORNING WILL BE ACTIVE ESPECIALLY ACROSS THE HILL COUNTRY INTO
CENTRAL TEXAS.

GOT OUR FIRST LOOK AT SCAN IN THE NEW AWIPS LOAD.  SEEMS TO BE
WORKING OKAY.

.EWX...NONE.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 15, 8:13 PM CSTSevere Thunderstorm WarningEWXVal Verde62 min
Feb 15, 8:46 PM CSTTornado WarningEWXEdwards, Val Verde29 min
Feb 15, 9:20 PM CSTSevere Thunderstorm WarningEWXEdwards25 min
Feb 15, 10:29 PM CSTSevere Thunderstorm WarningEWXEdwards, Kinney, Val Verde46 min
Feb 15, 11:08 PM CSTSevere Thunderstorm WarningEWXReal, Uvalde52 min
Feb 15, 11:35 PM CSTSevere Thunderstorm WarningEWXBandera, Real, Uvalde55 min
Feb 15, 11:35 PM CSTSevere Thunderstorm WarningEWXKerr55 min
Feb 16, 12:30 AM CSTSevere Thunderstorm WarningEWXGillespie, Kendall, Kerr45 min
Feb 16, 12:45 AM CSTSevere Thunderstorm WarningEWXBandera, Kendall, Kerr45 min
Feb 16, 12:45 AM CSTSevere Thunderstorm WarningEWXMedina45 min
Feb 16, 1:15 AM CSTSevere Thunderstorm WarningEWXBandera, Bexar, Medina45 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.