Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 258, NWS Fort Worth, TX

May 18, 1990Coryell County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 18, 1990, 2:03 PM CDT for Coryell County, Texas. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
May 18, 1990, 2:03 PM CDT (19:03 UTC)
Expired
May 18, 1990, 3:00 PM CDT
In force
57 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Coryell 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

Stephenville/Cla, TX (KSEP), launched 12:00Z, 7.1 hours before the alert went out and 96 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, Stephenville/Cla, TX at 12:00Z on 1990-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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, Stephenville/Cla, TX at 12:00Z on 1990-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.19395878Sfc1 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
9 J/kg
Mixed-layer CIN
-320 J/kg
Mixed-layer LCL
1186 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
119 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, May 18, 1:39 PM CDT, 24 minutes before
TXZ031-037-181935-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
135 PM CDT FRI MAY 18 1990

AT 130 PM CDT SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...
EXTENDED WEST OF A LINE FROM 25 MILES SOUTHEAST OF BRENHAM TO 10 MILES
NORTHEAST OF STEPHENVILLE.  THE AREA EXTENDED WESTWARD TO A LINE FROM NEAR
BROWNWOOD TO SOUTH OF AUSTIN.  THE HEAVIEST RAIN WAS OCCURRING OVER
CORYELL COUNTY SOUTH OF GATESVILLE AND EXTREME EASTERN LAMPASAS COUNTY
20 MILES NORTHEAST OF LAMPASAS.  MOVEMENT WAS NORTHEAST AT 25 MILES AN
HOUR.

PERSONS IN CORYELL COUNTY SHOULD BE ON THE LOOKOUT FOR BRIEF VERY HEAVY
RAIN...GUSTY WINDS AND DANGEROUS LIGHTNING.  STAY TUNED TO NOAA WEATHER
RADIO OR TO LOCAL RADIO AND TELEVISION STATIONS FOR LATER STATEMENTS.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 4:04 PM CDTTornado WarningFWDMcLennan56 min
May 18, 4:26 PM CDTTornado WarningFWDHill64 min
May 18, 5:50 PM CDTSevere Thunderstorm WarningFWDMcLennan25 min
May 18, 6:01 PM CDTSevere Thunderstorm WarningFWDBosque44 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990

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.