Alert archive / Texas / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 66, NWS Austin/San Antonio, TX

April 17, 1995Medina County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 17, 1995, 11:45 PM CDT for Medina County, Texas. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Apr 17, 1995, 11:45 PM CDT (04:45 UTC)
Expired
Apr 18, 1995, 12:30 AM CDT
In force
45 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Medina County, TX

The radar

The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 04:46 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 nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 4.8 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 1995-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 330 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 1995-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.1939587897117Sfc1 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
330 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
3626 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 9:17 PM CDTSevere Thunderstorm WarningEWXWebb58 min
Apr 17, 10:23 PM CDTSevere Thunderstorm WarningEWXLlano67 min
Apr 17, 11:08 PM CDTSevere Thunderstorm WarningEWXUvalde37 min
Apr 17, 11:51 PM CDTSevere Thunderstorm WarningEWXComal, Hays, Travis69 min

Nearby

Severe Thunderstorm Warnings in Texas, 1995Every severe thunderstorm warning in 1995

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.