Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 39, NWS Lake Charles, LA

April 25, 1997Acadia Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 25, 1997, 8:42 PM CDT for Acadia Parish, Louisiana. It was in force for 63 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: Apr 25, 1997, 8:42 PM CDT (01:42 UTC)
Expired: Apr 25, 1997, 9:45 PM CDT
In force: 63 min
Issued by: NWS Lake Charles, LA
Area: Whole counties

County Acadia Parish, LA

The radar

The Lake Charles radar (KLCH), 79 km from the middle of the area, began a volume at 01:43 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 25, 8:50 PM CDT	Thunderstorm Wind	Morse, LA

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
Apr 25, 8:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 1.7 hours before the alert went out and 78 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: 501 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 366 m²/s²
0-3 km storm-relative helicity: 631 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 KLCH 260149 RRA
SVRLCH
LAC001-260245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
842 PM CDT FRI APR 25 1997
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST LOUISIANA
 
   ...ACADIA PARISH
 
AT 840 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM IN SOUTHWESTERN ACADIA PARISH...BETWEEN MERMENTAU AND EGAN
...MOVING NORTHEAST AT 30 MPH. PERSONS IN THE COMMUNITIY OF EGAN ARE IN
THE PATH OF THIS STORM.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND.r..LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 7:10 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson Davis	50 min
Apr 25, 10:08 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron	67 min
Apr 25, 10:45 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson Davis	60 min
Apr 25, 11:19 PM CDT	Severe Thunderstorm Warning	LCH	Cameron	56 min
Apr 26, 12:13 AM CDT	Severe Thunderstorm Warning	LCH	Vermilion	62 min
Apr 26, 12:30 AM CDT	Severe Thunderstorm Warning	LCH	Lafayette	60 min
Apr 26, 1:00 AM CDT	Severe Thunderstorm Warning	LCH	Saint Landry	60 min
Apr 26, 6:16 AM CDT	Tornado Warning	LCH	Vermilion	59 min
Apr 26, 7:53 AM CDT	Severe Thunderstorm Warning	LCH	Vermilion	37 min
Apr 26, 8:30 AM CDT	Severe Thunderstorm Warning	LCH	Iberia	30 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.