Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 113, NWS Fort Worth, TX

April 8, 1998Van Zandt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 8, 1998, 12:18 AM CDT for Van Zandt County, Texas. It was in force for 57 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Apr 8, 1998, 12:18 AM CDT (05:18 UTC)
Expired
Apr 8, 1998, 1:15 AM CDT
In force
57 min
Issued by
NWS Fort Worth, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 140 km from the middle of the area, began a volume at 05:17 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

TimeReportWhereRemark
Apr 8, 12:35 AM CDTHail 0.75Wills Pt, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 8, 12:00 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.3 hours before the alert went out and 140 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, Fort Worth, TX at 00:00Z on 1998-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Fort Worth, TX at 00:00Z on 1998-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.1939587897117136156Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3263 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

226 
WUUS1 KFTW 080520 RRA
SVRFTW
TXC467-080615-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
1218 AM CDT WED APR 8 1998

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 115 AM CDT FOR PEOPLE IN THE
FOLLOWING COUNTY

IN TEXAS
     VAN ZANDT

INCLUDING THE FOLLOWING LOCATIONS
     WILLS POINT...VAN...MYRTLE SPRINGS...GRAND SALINE...EDGEWOOD...
     CANTON AND BEN WHEELER

AT 1218 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
SEVERE THUNDERSTORM 13 MILES SOUTHWEST OF WILLS POINT...MOVING
NORTHEAST AT 70 MILES PER HOUR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

LAT...LON 3274 9573 3251 9559 3236 9576 3263 9608
          3285 9598

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 7, 10:52 PM CDTSevere Thunderstorm WarningFWDBosque, Hill53 min
Apr 7, 11:21 PM CDTSevere Thunderstorm WarningFWDEllis, Navarro39 min
Apr 7, 11:51 PM CDTSevere Thunderstorm WarningFWDKaufman54 min
Apr 8, 12:35 AM CDTSevere Thunderstorm WarningFWDRains25 min
Apr 8, 1:04 AM CDTSevere Thunderstorm WarningFWDMills56 min
Apr 8, 1:15 AM CDTSevere Thunderstorm WarningFWDHamilton45 min
Apr 8, 2:35 AM CDTSevere Thunderstorm WarningFWDJohnson55 min
Apr 8, 2:45 AM CDTSevere Thunderstorm WarningFWDEllis60 min
Apr 8, 2:51 AM CDTSevere Thunderstorm WarningFWDDallas54 min
Apr 8, 3:07 AM CDTSevere Thunderstorm WarningFWDKaufman53 min
Apr 8, 3:45 AM CDTSevere Thunderstorm WarningFWDMcLennan60 min
Apr 8, 4:29 AM CDTSevere Thunderstorm WarningFWDLimestone, Navarro61 min
Apr 8, 4:50 AM CDTSevere Thunderstorm WarningFWDHenderson55 min
Apr 8, 4:59 AM CDTSevere Thunderstorm WarningFWDAnderson, Freestone61 min
Apr 8, 6:00 AM CDTSevere Thunderstorm WarningFWDAnderson30 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning in 1998

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.