Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 40, NWS Austin/San Antonio, TX

April 16, 2001Lee County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 16, 2001, 3:55 PM CDT for Lee County, Texas. It was in force for 65 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
Apr 16, 2001, 3:55 PM CDT (20:55 UTC)
Expired
Apr 16, 2001, 5:00 PM CDT
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Lee County, TX

What was reported inside it

TimeReportWhereRemark
Apr 16, 4:50 PM CDTHail 1Lincoln, TX
Apr 16, 4:50 PM CDTHail 1Lexington, 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.9 hours before the alert went out and 277 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, Fort Worth, TX at 12:00Z on 2001-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Fort Worth, TX at 12:00Z on 2001-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1970 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
265 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 162056
SVRSAT
TXC287-162200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
355 PM CDT MON APR 16 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 500 PM CDT

* AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTH OF LEXINGTON...MOVING SOUTHEAST
  AT 25 MPH.

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.


LAT...LON 3042 9723 3011 9696 3029 9673 3049 9696

N

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 Apr 16, 2:40 PM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, Apr 16, 2:40 PM CDT, 1 hour 15 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
240 PM CDT MON APR 16 2001

SCATTERED SHOWERS AND THUNDERSTORMS ARE FIRING JUST NORTH OF THE
WARM FRONT FROM TAYLOR TO HOUSTON.  THESE TSTMS HAVE SVR POTENTIAL
WITH LARGE HAIL BEING THE PRIMARY THREAT.  TSTMS MAY BUILD WESTWARD
ALONG THE WARM FRONT THIS EVENING AFFECTING THE NE COUNTIES.

MAJOR LATE SEASON COLD FRONT WILL ENTER THE TEXAS HILL COUNTRY
AROUND MIDNIGHT AND BE SOUTH OF THE CWFA BY TUESDAY MORNING.
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL ACCOMPANY THE
FRONT WITH A THREAT OF SVR TSTMS...WITH LARGE HAIL.  WILL HAVE
POST-FRONTAL RAIN AND TSTMS ON TUESDAY.  PCPN CHANCES CONTINUE INTO
TUESDAY NIGHT AND WEDNESDAY AS A SHORT WAVE IN THE NW FLOW ALOFT
MOVES THRU.  TUESDAY WILL BE COOL AND WINDY AS CAA AND CLOUD COVER
INHIBIT ANY DAYTIME WARMING.  HIGH TEMPS TUESDAY FOR MUCH OF THE
CWFA WILL OCCUR IN THE MORNING...WITH FALLING TO NEAR STEADY TEMPS
DURING THE AFTERNOON.  WARMUP WILL BEGIN THURSDAY WITH HUMID
CONDITIONS BACK FOR THE WEEKEND.  NEXT CHANCE OF PCPN IS MONDAY.

PRELIMS...
AUS 58/65/46/65/50 65320
SAT 62/66/50/68/53 65320
DsRT 68/71/53/70/59 55330

.EWX...NONE.

13/05

In the hours before

Special weather statement, Apr 16, 3:15 PM CDT, 40 minutes before
TXZ171>173-183>194-202>209-217>225-228-170400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
315 PM CDT MON APR 16 2001

THE NATIONAL WEATHER SERVICE HAS DETERMINED THAT A SLIGHT RISK OF
SEVERE THUNDERSTORMS EXISTS OVER PORTIONS OF SOUTH CENTRAL TEXAS AND
THE HILL COUNTRY THIS AFTERNOON AND TONIGHT.  LARGE HAIL AND DAMAGING
WIND GUSTS...ALONG WITH BRIEF HEAVY RAIN...WILL BE THE MAIN THREAT.

A COLD FRONT WILL RACE SOUTHWARD INTO CENTRAL AND SOUTH CENTRAL
TEXAS TONIGHT.  THIS BOUNDARY OF COLDER AIR WILL COLLIDE WITH
ABUNDANT LOW-LEVEL MOISTURE STREAMING NORTHWARD FROM THE GULF OF
MEXICO.  WHERE THE TWO MEET WILL DETERMINE WHERE THE SEVERE
THUNDERSTORM POTENTIAL DEVELOPS AND WHERE SEVERE WEATHER WATCHES
AND/OR WARNINGS WILL BE REQUIRED.

PRE-FRONTAL THUNDERSTORM ACTIVITY HAS ALREADY BEEN TRIGGERED BY
AFTERNOON HEATING BETWEEN GEORGETOWN AND HOUSTON IN CENTRAL AND
SOUTHEAST TEXAS.  CURRENT MOVEMENT IS TOWARD THE SOUTHEAST AT 15
MPH.

SPOTTER NETWORKS MAY NEED TO BE ACTIVATED THIS EVENING IN CENTRAL
AND SOUTH CENTRAL TEXAS...AS WELL AS THE TEXAS HILL COUNTRY...THIS
EVENING.

FOR INFORMATION ON WEATHER THREATS IN SURROUNDING AREAS...PLEASE
REFER TO OUTLOOKS FROM OFFICES IN MIDLAND/ODESSA...SAN ANGELO...FORT
WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 8:45 PM CDTSevere Thunderstorm WarningEWXReal60 min
Apr 15, 9:42 PM CDTSevere Thunderstorm WarningEWXUvalde63 min
Apr 16, 2:18 AM CDTSevere Thunderstorm WarningEWXEdwards, Val Verde57 min
Apr 16, 3:28 AM CDTSevere Thunderstorm WarningEWXVal Verde62 min
Apr 16, 4:48 PM CDTTornado WarningEWXLee42 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.