Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 68, NWS Austin/San Antonio, TX

March 28, 2000Medina County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 28, 2000, 6:50 PM CST for Medina County, Texas. It was in force for 40 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: Mar 28, 2000, 6:50 PM CST (00:50 UTC)
Expired: Mar 28, 2000, 7:30 PM CST
In force: 40 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Medina County, TX

The radar

The Austin/San Antonio radar (KEWX), 109 km from the middle of the area, began a volume at 01:07 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
Mar 28, 6:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.8 hours before the alert went out and 175 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: 290 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 2746 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: -56 m²/s²
0-3 km storm-relative helicity: -124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

Open this sounding in Storm Lab

The text

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

029 
WUUS54 KEWX 290050
SVRSAT
TXC325-290130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
650 PM CST TUE MAR 28 2000

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

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

* UNTIL 730 PM CST

* AT 650 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 14 MILES WEST OF NATALIA...OR ABOUT 9 MILES
  SOUTHEAST OF HONDO...MOVING NORTHEAST AT 30 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.

A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A
PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.

.END/ LAT...LON 2928 9921 2914 9905 2914 9884 2949 9886

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 6:16 PM CST	Tornado Warning	EWX	Blanco	59 min
Mar 28, 6:38 PM CST	Tornado Warning	EWX	Hays	52 min
Mar 28, 6:41 PM CST	Severe Thunderstorm Warning	EWX	Bexar	64 min
Mar 28, 6:53 PM CST	Tornado Warning	EWX	Bexar	67 min
Mar 28, 7:06 PM CST	Severe Thunderstorm Warning	EWX	Hall	24 min
Mar 28, 7:33 PM CST	Tornado Warning	EWX	Caldwell, Hays	42 min
Mar 28, 7:54 PM CST	Tornado Warning	EWX	Bexar, Wilson	51 min
Mar 29, 2:34 AM CST	Severe Thunderstorm Warning	EWX	Burnet, Llano	56 min
Mar 29, 3:26 AM CST	Severe Thunderstorm Warning	EWX	Llano	64 min
Mar 29, 4:00 AM CST	Severe Thunderstorm Warning	EWX	Burnet	60 min
Mar 29, 6:03 AM CST	Severe Thunderstorm Warning	EWX	Hays	27 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.