Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 28, NWS Austin/San Antonio, TX

March 16, 2000Comal County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 16, 2000, 4:47 PM CST for Comal County, Texas. It was in force for 43 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 16, 2000, 4:47 PM CST (22:47 UTC)
Expired: Mar 16, 2000, 5:30 PM CST
In force: 43 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Comal County, TX

The radar

The Austin/San Antonio radar (KEWX), 34 km from the middle of the area, began a volume at 22:46 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 16, 2:45 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 10.8 hours before the alert went out and 249 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: 487 J/kg
Mixed-layer CIN: -391 J/kg
Mixed-layer LCL: 1237 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 336 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 162247
SVRSAT
TTAA00 KEWX 162245

TXC091-162345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
447 PM CST THU MAR 16 2000

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

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

* UNTIL 530 PM CST

* AT 445 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTH OF SPRING BRANCH...OR ABOUT 8
  MILES NORTHWEST OF CANYON LAKE DAM...MOVING EAST AT 15 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.

.END/ LAT...LON 2989 9844 2973 9832 2983 9815 2998 9829

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 3:25 PM CST	Severe Thunderstorm Warning	EWX	Burnet	65 min
Mar 16, 3:45 PM CST	Severe Thunderstorm Warning	EWX	Williamson	60 min
Mar 16, 4:08 PM CST	Tornado Warning	EWX	Williamson	37 min
Mar 16, 4:43 PM CST	Tornado Warning	EWX	Travis, Williamson	32 min
Mar 16, 4:59 PM CST	Severe Thunderstorm Warning	EWX	Bexar	61 min
Mar 16, 5:08 PM CST	Severe Thunderstorm Warning	EWX	Hays	52 min
Mar 16, 5:18 PM CST	Severe Thunderstorm Warning	EWX	Travis, Williamson	27 min
Mar 16, 5:28 PM CST	Severe Thunderstorm Warning	EWX	Comal	62 min
Mar 16, 5:42 PM CST	Severe Thunderstorm Warning	EWX	Bastrop	63 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.