Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 13, NWS Shreveport, LA

February 9, 1998Marion County, Texas

NWS Shreveport, LA issued this tornado warning at Feb 9, 1998, 9:49 PM CST for Marion County, Texas. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 9, 1998, 9:49 PM CST (03:49 UTC)
Expired: Feb 9, 1998, 10:20 PM CST
In force: 31 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Marion County, TX

The radar

The Shreveport radar (KSHV), 62 km from the middle of the area, began a volume at 03:51 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

Shreveport, LA (KSHV), launched 00:00Z, 3.8 hours before the alert went out and 67 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: 157 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 349 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 100349 RRA
TORSHV
TXC315-100420-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
949 PM CST MON FEB 9 1998

THE NATIONAL WEATHER SERVICE IN SHREVEPORT LA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1020 PM CST
FOR THE FOLLOWING AREA...

IN NORTHEASTERN TEXAS

   ...MARION COUNTY

AT 948 PM CST DOPPLER RADAR IN SHREVEPORT INDICATED A POSSIBLE
TORNADO ABOUT 1 MILE NORTH OF JEFFERSON MOVING TO THE EAST NORTHEAST
AT 30 MPH.

THE COMMUNITIES OF JODI AND SMITHLAND MAY BE AFFECTED AROUND 1000
PM.

THIS THUNDERSTORM CAN PRODUCE A TORNADO THAT IS OBSCURED BY
RAIN AND DIFFICULT TO SEE. GO TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 9, 7:56 PM CST	Severe Thunderstorm Warning	SHV	Upshur	64 min
Feb 9, 8:38 PM CST	Tornado Warning	SHV	Gregg	47 min
Feb 9, 8:52 PM CST	Tornado Warning	SHV	Harrison	33 min
Feb 9, 8:57 PM CST	Severe Thunderstorm Warning	SHV	Marion	48 min
Feb 9, 9:03 PM CST	Tornado Warning	SHV	Marion	47 min
Feb 10, 6:32 AM CST	Severe Thunderstorm Warning	SHV	Gregg, Smith	48 min
Feb 10, 8:21 AM CST	Severe Thunderstorm Warning	SHV	Cass	49 min
Feb 10, 12:03 PM CST	Tornado Warning	SHV	Cass	47 min
Feb 10, 12:34 PM CST	Severe Thunderstorm Warning	SHV	Bowie	46 min
Feb 10, 1:28 PM CST	Severe Thunderstorm Warning	SHV	Angelina	47 min
Feb 10, 1:38 PM CST	Severe Thunderstorm Warning	SHV	Nacogdoches	47 min
Feb 10, 1:48 PM CST	Severe Thunderstorm Warning	SHV	San Augustine	47 min
Feb 10, 2:01 PM CST	Severe Thunderstorm Warning	SHV	Sabine	49 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.