Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 8, NWS New Orleans, LA

January 15, 1997Washington Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 15, 1997, 4:23 PM CST for Washington Parish, Louisiana. It was in force for 37 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: Jan 15, 1997, 4:23 PM CST (22:23 UTC)
Expired: Jan 15, 1997, 5:00 PM CST
In force: 37 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Washington Parish, LA

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 15, 3:00 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.4 hours before the alert went out and 75 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 518 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 288 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 152224 RRA
SVRNEW
LAC117-152300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
423 PM CST WED JAN 15 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CST
FOR RESIDENTS IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST LOUISIANA
 
   ...WASHINGTON PARISH
 
AT 420 PM CST NATIONAL SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
JUST WEST OF FRANKLINTON MOVING EAST AT 50 MPH. THIS THUNDERSTORM IS
CAPABLE OF PRODUCING WIND GUST AROUND 60 MPH AND SOME HAIL.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEATDLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 15, 4:10 PM CST	Severe Thunderstorm Warning	LIX	Tangipahoa	35 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1997 Every severe thunderstorm warning in 1997

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.