Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 74, NWS Austin/San Antonio, TX

April 1, 2000Atascosa County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 1, 2000, 8:19 PM CST for Atascosa County, Texas. It was in force for 71 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: Apr 1, 2000, 8:19 PM CST (02:19 UTC)
Expired: Apr 1, 2000, 9:30 PM CST
In force: 71 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Atascosa County, TX

The radar

The Austin/San Antonio radar (KEWX), 116 km from the middle of the area, began a volume at 02:19 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 1, 8:00 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.3 hours before the alert went out and 168 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: 2670 J/kg
Mixed-layer CIN: -223 J/kg
Mixed-layer LCL: 777 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: -36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 020219
SVRSAT
TXC013-020330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
819 PM CST SAT APR 1 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

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

* UNTIL 930 PM CST

* AT 816 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM 8 MILES SOUTHW OF HINDES...OR ABOUT 8 MILES  
  NORTHEAST OF FOWLERTON...MOVING NORTHEAST 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.

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.

.END/ LAT...LON 2867 9879 2866 9855 2884 9827 2903 9849

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 8:23 PM CST	Severe Thunderstorm Warning	EWX	Burnet	67 min
Apr 1, 8:53 PM CST	Severe Thunderstorm Warning	EWX	Williamson	67 min
Apr 1, 9:19 PM CST	Severe Thunderstorm Warning	EWX	Bexar	56 min
Apr 1, 10:12 PM CST	Severe Thunderstorm Warning	EWX	Kendall	63 min
Apr 1, 10:25 PM CST	Severe Thunderstorm Warning	EWX	Atascosa	65 min
Apr 1, 10:36 PM CST	Severe Thunderstorm Warning	EWX	Blanco	54 min
Apr 2, 9:15 AM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet	60 min
Apr 2, 11:57 AM CDT	Severe Thunderstorm Warning	EWX	Frio	48 min
Apr 2, 12:17 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	58 min
Apr 2, 12:28 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa	42 min
Apr 2, 1:00 PM CDT	Tornado Warning	EWX	Bexar	45 min
Apr 2, 1:32 PM CDT	Severe Thunderstorm Warning	EWX	Guadalupe	43 min
Apr 2, 5:15 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	60 min
Apr 2, 6:08 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	52 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000 Every severe thunderstorm warning in 2000

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.