Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 17, NWS New Orleans, LA

May 17, 2002Saint Tammany Parish, Tangipahoa Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at May 17, 2002, 3:08 PM CDT for Saint Tammany Parish, Tangipahoa Parish, Louisiana. It was in force for 12 min. 1 report 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: May 17, 2002, 3:08 PM CDT (20:08 UTC)
Expired: May 17, 2002, 3:20 PM CDT
In force: 12 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Saint Tammany Parish, LA, Tangipahoa Parish, LA

What was reported inside it

Time	Report	Where	Remark
May 17, 3:20 PM CDT	Thunderstorm Wind	Countywide, LA	Several trees and power lines were blown down at various locations around the parish.

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

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.1 hours before the alert went out and 55 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: 1762 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 172008
TORNEW
LAC103-105-172020-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
306 PM CDT FRI MAY 17 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWEST ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA
  TANGIPAHOA PARISH IN SOUTHEAST LOUISIANA
  
* UNTIL 320 PM CDT

* AT 246 PM CDT...THE HAMMOND POLICE DEPARTMENT A TORNADO            
  NEAR HAMMOND WITH SOME PROPERTY DAMAGE...MOVING NORTHEAST AT 35    
  MPH.

SEEK SHELTER ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY
OR ROOM SUCH AS A CLOSET OR BATHROOM.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 1:14 PM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee	31 min
May 17, 1:31 PM CDT	Severe Thunderstorm Warning	LIX	West Feliciana	29 min
May 17, 1:43 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, West Baton Rouge	47 min
May 17, 2:21 PM CDT	Special Marine Warning	LIX		84 min
May 17, 3:01 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	29 min
May 17, 3:20 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	55 min
May 17, 3:32 PM CDT	Severe Thunderstorm Warning	LIX	Washington	43 min
May 17, 3:44 PM CDT	Special Marine Warning	LIX		91 min
May 17, 3:44 PM CDT	Special Marine Warning	LIX		91 min
May 17, 5:20 PM CDT	Special Marine Warning	LIX		115 min
May 17, 5:58 PM CDT	Special Marine Warning	LIX		2 hr

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.