Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 6, NWS Fort Worth, TX

January 21, 1998Leon County, Texas

NWS Fort Worth, TX issued this tornado warning at Jan 21, 1998, 4:15 PM CST for Leon County, Texas. It was in force for 45 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jan 21, 1998, 4:15 PM CST (22:15 UTC)
Expired: Jan 21, 1998, 5:00 PM CST
In force: 45 min
Issued by: NWS Fort Worth, TX
Area: Whole counties

County Leon County, TX

The radar

The Ft Hood radar (KGRK), 147 km from the middle of the area, began a volume at 22:14 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

Time	Report	Where	Remark
Jan 21, 4:35 PM CST	Tornado F0	Normangee, TX	A brief tornado touchdown was reported.
Jan 21, 4:35 PM CST	Hail 1.75	Normangee, 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.

Issued	Product	Office	Lasted
Jan 21, 2:15 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.3 hours before the alert went out and 210 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: 45 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 500 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 154 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.

000 
TTAA00 KFTW 212215 RRA
TORFTW
TXC289-212300-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
415 PM CST WED JAN 21 1998
 
THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  500 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL TEXAS
 
   ...LEON COUNTY
 
AT 415 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A DEVELOPING
TORNADO ON THE ROBERTSON/LEON COUNTY LINE WEST OF WEALTHY. MOVEMENT WAS
NORTHEAST AT 20 MPH. HAIL TO 2 INCHES IN DIAMETER...DAMAGING WINDS...
VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALSO POSSIBLE WITH THIS
STORM.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 12:44 PM CST	Severe Thunderstorm Warning	FWD	Ellis	46 min
Jan 21, 1:00 PM CST	Severe Thunderstorm Warning	FWD	Henderson, Van Zandt	60 min
Jan 21, 1:09 PM CST	Severe Thunderstorm Warning	FWD	Kaufman	66 min
Jan 21, 2:33 PM CST	Severe Thunderstorm Warning	FWD	Milam	42 min
Jan 21, 2:42 PM CST	Severe Thunderstorm Warning	FWD	Bell, Falls	63 min
Jan 21, 3:00 PM CST	Severe Thunderstorm Warning	FWD	Robertson	60 min
Jan 21, 3:14 PM CST	Severe Thunderstorm Warning	FWD	Milam	61 min
Jan 21, 3:53 PM CST	Tornado Warning	FWD	Robertson	52 min
Jan 21, 4:01 PM CST	Severe Thunderstorm Warning	FWD	Collin, Dallas	59 min
Jan 21, 4:46 PM CST	Severe Thunderstorm Warning	FWD	Ellis	59 min
Jan 21, 4:58 PM CST	Tornado Warning	FWD	Leon	62 min
Jan 21, 5:22 PM CST	Severe Thunderstorm Warning	FWD	Kaufman	68 min
Jan 21, 5:34 PM CST	Flash Flood Warning	FWD	Leon, Robertson	4 hr

Nearby

Tornado Warnings in Texas, 1998 Every tornado warning in 1998 Tornadoes 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.