Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 12, NWS Shreveport, LA

April 8, 2002Webster Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 8, 2002, 12:22 AM CDT for Webster Parish, Louisiana. It was in force for 23 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 8, 2002, 12:22 AM CDT (05:22 UTC)
Expired: Apr 8, 2002, 12:45 AM CDT
In force: 23 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Webster Parish, LA

The radar

The Shreveport radar (KSHV), 55 km from the middle of the area, began a volume at 05:23 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
Apr 8, 12:25 AM CDT	Thunderstorm Wind 60 E	Minden, LA	Winds removed a store front awning and destroyed a sign.

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 nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 5.4 hours before the alert went out and 47 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: 201 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 926 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 377 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 080522
TORSHV
LAC119-080545-
/NEW.KSHV.TO.W.0030.080522-080545/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1222 AM CDT MON APR 8 2002

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  WEBSTER PARISH IN NORTHWEST LOUISIANA

* UNTIL 1245 AM CDT

* AT 1222 AM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A TORNADO OVER CENTRAL WEBSTER PARISH...OR ABOUT 9
  MILES NORTHWEST OF MINDEN...MOVING EAST AT 45 MPH.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  WEBSTER PARISH IN NORTHWEST LOUISIANA
UNTIL 1245 AM CDT.

LAT...LON 3279 9345 3260 9341 3262 9321 3285 9324

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 11:35 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	55 min
Apr 7, 11:43 PM CDT	Tornado Warning	SHV	Bossier, Caddo	32 min
Apr 8, 12:38 AM CDT	Severe Thunderstorm Warning	SHV	Claiborne	52 min
Apr 8, 1:42 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	48 min

Nearby

Tornado Warnings in Louisiana, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.