Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 50, NWS Austin/San Antonio, TX

April 23, 2001Wilson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 23, 2001, 2:18 PM CDT for Wilson County, Texas. It was in force for 57 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 23, 2001, 2:18 PM CDT (19:18 UTC)
Expired: Apr 23, 2001, 3:15 PM CDT
In force: 57 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Wilson County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 23, 2:50 PM CDT	Thunderstorm Wind	Sutherland Spgs, TX	Trees were blown down by severe thunderstorm winds.
Apr 23, 3:00 PM CDT	Hail 0.75	La Vernia, 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

Corpus Christi, TX (KCRP), launched 12:00Z, 7.3 hours before the alert went out and 176 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1138 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 612 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 23, 11:02 AM CDT, 3 hours 16 minutes earlier.

Area forecast discussion, Apr 23, 11:02 AM CDT, 3 hours 16 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1102 AM CDT MON APR 23 2001

SMALL CLUSTER OF VERY HEAVY RAINFALL CONTINUES IN THE SAN ANTONIO
AREA WITH A FEW REPORTS OF 3 TO 3.5 INCHES OF RAIN.  CLUSTER HAS
SHOWN SIGNS OF WEAKENING IN INTENSITY AS REDEVELOPMENT TAKES PLACE
JUST WEST.  THESE THE RESULT OF SHORT-WAVE AHEAD OF COLD FRONT.
MODELS INDICATE SHORT-WAVE WILL MOVE EAST BY EVENING.  SO...WILL
MAINTAIN HIGH POPS AND SEVERE/HEAVY RAINFALL MENTIONS...ESPECIALLY
SOUTH AND EAST FOR THIS AFTERNOON.  HOWEVER...FLASH FLOOD WATCH
CONTINUES TO BE NOT NEEDED AS WIDESPREAD FLOODING NOT EXPECTED.  WILL
MAKE SOME ADJUSTMENTS TO WINDS AND TEMPERATURES BASED ON ONGOING
TRENDS.  ANY CHANGES TO REMAINING PERIODS WILL WAIT UNTIL AFTERNOON
PACKAGE.  04/06.

.EWX...NONE.

In the hours before

Local storm report, Apr 23, 10:03 AM CDT, 4 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
1003 AM CDT MON APR 23 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATIONR....

0400 AM    13 N VANDERPOOL           TX   TORNADO
04/23/01   BANDERA                        TORNADO REPORTED BY CO-OP
                                          OBSERVERS

Local storm report, Apr 23, 1:20 PM CDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
120 PM CDT MON APR 23 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1212 PM    SAN ANTONIO               TX   1.25 INCH HAIL
04/23/01   BEXAR                          LOOP 410/RIGSBY

JPB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 11:15 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	60 min
Apr 23, 12:11 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	64 min
Apr 23, 12:21 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	69 min
Apr 23, 12:54 AM CDT	Flash Flood Warning	EWX	Val Verde	3 hr
Apr 23, 1:18 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	42 min
Apr 23, 2:02 AM CDT	Flash Flood Warning	EWX	Edwards	118 min
Apr 23, 3:24 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kerr	66 min
Apr 23, 7:50 AM CDT	Flash Flood Warning	EWX	Bexar, Comal	115 min
Apr 23, 9:20 AM CDT	Flash Flood Warning	EWX	Bexar, Comal	3 hr
Apr 23, 9:39 AM CDT	Flash Flood Warning	EWX	Guadalupe	3 hr
Apr 23, 12:07 PM CDT	Flash Flood Warning	EWX	Bexar, Medina	4 hr
Apr 23, 12:16 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	59 min
Apr 23, 12:49 PM CDT	Severe Thunderstorm Warning	EWX	Medina	41 min
Apr 23, 1:31 PM CDT	Severe Thunderstorm Warning	EWX	Gonzales, Guadalupe	59 min
Apr 23, 2:05 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	55 min
Apr 23, 3:10 PM CDT	Flash Flood Warning	EWX	Bexar	5 hr
Apr 23, 4:10 PM CDT	Severe Thunderstorm Warning	EWX	Wilson	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every 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.