Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 138, NWS Austin/San Antonio, TX

June 25, 1987Bastrop County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 25, 1987, 4:00 PM CDT for Bastrop County, Texas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Jun 25, 1987, 4:00 PM CDT (21:00 UTC)
Expired
Jun 25, 1987, 5:00 PM CDT
In force
60 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Bastrop County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Victoria Regiona, TX (KVCT), launched 12:00Z, 9.0 hours before the alert went out and 145 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, Victoria Regiona, TX at 12:00Z on 1987-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1930 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, Victoria Regiona, TX at 12:00Z on 1987-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939Sfc1 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
1930 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 25, 3:40 PM CDT, 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
340 PM CDT THU JUN 25 1987

...STRONG THUNDERSTORMS RAPIDLY DEVELOPING IN CENTRAL TEXAS...

WITHIN THE PAST HOUR STRONG THUNDERSTORMS HAVE DEVELOPED IN AND
AROUND THE AUSTIN AREA. ANYONE OF THESE THUNDERSTORMS MAY PRODUCE
SMALL HAIL...GUSTY WINDS AND BRIEF HEAVY RAINS ALONG WITH DANGEROUS
LIGHTNING AS THEY MOVE SOUTHEASTWARD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 3:48 PM CDTSevere Thunderstorm WarningEWXTravis57 min
Jun 25, 4:42 PM CDTSevere Thunderstorm WarningEWXBastrop, Lee, Milam, Travis, Williamson63 min
Jun 25, 4:42 PM CDTSevere Thunderstorm WarningEWXBurleson63 min
Jun 25, 4:55 PM CDTFlash Flood WarningEWXTravis3 hr
Jun 25, 5:42 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson63 min
Jun 25, 6:00 PM CDTSevere Thunderstorm WarningEWXJackson, Lavaca60 min
Jun 25, 6:36 PM CDTTornado WarningEWXTravis39 min

Nearby

Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987

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.