Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 49, NWS Lake Charles, LA

May 24, 2001Vernon Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at May 24, 2001, 4:34 PM CDT for Vernon Parish, Louisiana. It was in force for 56 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: May 24, 2001, 4:34 PM CDT (21:34 UTC)
Expired: May 24, 2001, 5:30 PM CDT
In force: 56 min
Issued by: NWS Lake Charles, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Vernon Parish, LA

The radar

The Ft Polk radar (KPOE), 24 km from the middle of the area, began a volume at 21:35 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
May 24, 4:50 PM CDT	Hail 0.75	Pickering, 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
May 24, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.6 hours before the alert went out and 100 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: 3 J/kg
Mixed-layer CIN: -541 J/kg
Mixed-layer LCL: 1749 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLCH 242138
SVRLCH

LAC115-242230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
434 PM CDT THU MAY 24 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  VERNON PARISH IN WEST CENTRAL LOUISIANA

* UNTIL 530 PM CDT

* AT 435 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES NORTH OF ROSEPINE...MOVING EAST AT 25
  MPH.

* THIS STORM WILL BE NEAR...
  FORT POLK AND ROSEPINE BY 500 PM CDT
  PITKIN BY 515 PM CDT

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

CALL 337-477-52l85 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE.

LAT...LON 3107 9337 3090 9338 3091 9288 3115 9284

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 4:04 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	41 min
May 24, 4:19 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles	56 min
May 24, 5:09 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles	66 min
May 24, 5:27 PM CDT	Severe Thunderstorm Warning	LCH	Vernon	48 min
May 24, 5:36 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	54 min
May 24, 6:27 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	63 min
May 24, 6:33 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles	57 min
May 24, 6:47 PM CDT	Severe Thunderstorm Warning	LCH	Allen	58 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2001 Every severe thunderstorm warning in 2001

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.