Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 310, NWS Fort Worth, TX

July 16, 1998Hamilton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jul 16, 1998, 3:30 PM CDT for Hamilton 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 16, 1998, 3:30 PM CDT (20:30 UTC)
Expired: Jul 16, 1998, 4:30 PM CDT
In force: 60 min
Issued by: NWS Fort Worth, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Hamilton County, TX

The radar

The Ft Hood radar (KGRK), 130 km from the middle of the area, began a volume at 20:33 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

Fort Worth, TX (KFWD), launched 12:00Z, 8.5 hours before the alert went out and 158 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1318 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1754 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 48 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.

741 
WUUS1 KFTW 162035 RRA
SVRFTW
TXC193-162130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
330 PM CDT THU JUL 16 1998

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

   * SEVERE THUNDERSTORM WARNING FOR
     HAMILTON COUNTY IN TEXAS
     INCLUDING HAMILTON

   * UNTIL 430 PM CDT

   * AT 330 PM CDT THE A SEVERE THUNDERSTORM WAS 4 MILES EAST OF     
     POTTSVILLE. ANOTHER SEVERE THUNDERSTORM WAS ABOUT 8 MILES SOUTH 
     OF HAMILTON. THE THUNDERSTORMS WERE MOVING SOUTHWEST AT 10      
     MILES PER HOUR.

   * OTHER LOCATIONS IN THE WARNING INCLUDE POTTSVILLE

DAMAGING WINDS AND SMALL HAIL ARE OCCURING WITH THESE STORMS. THE 
PUBLIC HAS PROVIDED SEVERAL REPORTS OF TREES DOWNED BY WIND.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3165 9842 3145 9825 3170 9781 3179 9819

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 3:19 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	56 min
Jul 16, 4:16 PM CDT	Severe Thunderstorm Warning	FWD	Coryell	44 min
Jul 16, 5:02 PM CDT	Severe Thunderstorm Warning	FWD	Coryell, Lampasas	43 min
Jul 16, 5:46 PM CDT	Severe Thunderstorm Warning	FWD	McLennan	44 min
Jul 16, 6:25 PM CDT	Severe Thunderstorm Warning	FWD	Limestone	35 min
Jul 16, 6:26 PM CDT	Severe Thunderstorm Warning	FWD	Johnson	34 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.