Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 55, NWS Austin/San Antonio, TX

March 23, 2000Real County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 23, 2000, 5:45 AM CST for Real County, Texas. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 23, 2000, 5:45 AM CST (11:45 UTC)
Expired
Mar 23, 2000, 6:45 AM CST
In force
60 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Real County, TX

The radar

The Laughlin AFB radar (KDFX), 76 km from the middle of the area, began a volume at 11:47 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 nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 11.8 hours before the alert went out and 111 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2000-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2295 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2000-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2295 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
1411 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
362 m²/s²
Significant tornado parameter
2.0
Supercell composite
19.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 231147
SVRSAT
TXC385-231245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
545 AM CST THU MAR 23 2000

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

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

* UNTIL 645 AM CST

* AT 545 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
RAPIDLY INTESIFYING THUNDERSTORM 22 MILES NORTHWEST OF LEAKEY...OR 
ABOUT 13 MILES SOUTHEAST OF ROCKSPRINGS...MOVING EAST AT 35 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.

A TORNADO WATCH IS IN EFFECT UNTIL 6AM. SEVERE THUNDERSTORMS CAN AND 
DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PAREPARE 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/

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 23, 3:44 AM CSTSevere Thunderstorm WarningEWXVal Verde61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000Every 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.