Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 92, NWS Austin/San Antonio, TX

April 2, 2000Atascosa County, Frio County, Medina County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 2, 2000, 11:15 PM CDT for Atascosa County, Frio County, Medina County, Texas. It was in force for 45 min. 3 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 2, 2000, 11:15 PM CDT (04:15 UTC)
Expired: Apr 3, 2000, 12:00 AM CDT
In force: 45 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

Counties Atascosa County, TX, Frio County, TX, Medina County, TX

The radar

The Austin/San Antonio radar (KEWX), 113 km from the middle of the area, began a volume at 04:17 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.

What was reported inside it

Time	Report	Where
Apr 2, 11:40 PM CDT	Hail 0.75	Lytle, TX
Apr 2, 11:50 PM CDT	Hail 1	Moore, TX
Apr 2, 11:50 PM CDT	Hail 1	Devine, 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

Del Rio, TX (KDRT), launched 00:00Z, 4.3 hours before the alert went out and 190 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1119 m above ground
0-6 km bulk shear: 91 kt
0-1 km storm-relative helicity: -93 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 030417
SVRSAT
TXC013-163-325-030515-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1115 PM CDT SUN APR 2 2000

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

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

* UNTIL 1200 AM CDT

* AT 1115 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHWEST OF PEARSALL...MOVING
  NORTHEAST AT 45 MPH.

IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND 
MOVE TO A SUBSTANTIAL SHELTER.

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.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM HIGH AREAS...METAL OBJECTS...AND TALL ISOLATED TREES. MOVE
INDOORS IF POSSIBLE BUT STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING THE TELEPHONE UNLESS IT IS AN EMERGENCY.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

.END/

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 9:35 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	40 min
Apr 2, 10:01 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Medina, Zavala	44 min
Apr 2, 10:15 PM CDT	Severe Thunderstorm Warning	EWX	Hays, Travis	45 min
Apr 2, 10:39 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	66 min
Apr 2, 11:16 PM CDT	Severe Thunderstorm Warning	EWX	Comal, Hays	59 min
Apr 2, 11:28 PM CDT	Severe Thunderstorm Warning	EWX	Guadalupe	62 min
Apr 2, 11:39 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar	66 min
Apr 3, 12:12 AM CDT	Flash Flood Warning	EWX	Bexar	4 hr
Apr 3, 12:36 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Karnes, Wilson	69 min
Apr 3, 1:10 AM CDT	Tornado Warning	EWX	DeWitt, Karnes	50 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.