Alert archive / Louisiana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 33, NWS Lake Charles, LA

March 2, 1999Saint Martin Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 2, 1999, 10:50 PM CST for Saint Martin Parish, Louisiana. It was in force for 35 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: Mar 2, 1999, 10:50 PM CST (04:50 UTC)
Expired: Mar 2, 1999, 11:25 PM CST
In force: 35 min
Issued by: NWS Lake Charles, LA
Area: Whole counties

County Saint Martin Parish, LA

What was reported inside it

Time	Report	Where	Remark
Mar 2, 11:05 PM CST	Thunderstorm Wind	St Martinville, 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
Mar 2, 9:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.8 hours before the alert went out and 153 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: 2326 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 198 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 15.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 2, 7:37 PM CST, 3 hours 13 minutes earlier.

Area forecast discussion, Mar 2, 7:37 PM CST, 3 hours 13 minutes before

SOUTHWEST...CENTRAL LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
737 PM CST TUE MAR 2 1999

LINE OF STORMS PRODUCING LARGE HAIL AND FEW TORNADOES NOW EXITING SE
TX ZONES. FORECAST WILL BE UPDATED BASED ON MOVEMENT OF FRONTAL
BOUNDARY AND ASSOCIATED WATCHES WARNINGS AND WEATHER. 8

In the hours before

Local storm report, Mar 2, 8:46 PM CST, 2 hours 4 minutes before

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Local storm report, Mar 2, 8:55 PM CST, 1 hour 55 minutes before

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Special weather statement, Mar 2, 9:05 PM CST, 1 hour 45 minutes before

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Special weather statement, Mar 2, 9:05 PM CST, 1 hour 45 minutes before

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Local storm report, Mar 2, 9:33 PM CST, 1 hour 17 minutes before

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Local storm report, Mar 2, 9:33 PM CST, 1 hour 17 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 6:35 PM CST	Tornado Warning	LCH	Beauregard	60 min
Mar 2, 6:54 PM CST	Severe Thunderstorm Warning	LCH	Vernon	66 min
Mar 2, 7:26 PM CST	Tornado Warning	LCH	Beauregard	64 min
Mar 2, 7:30 PM CST	Tornado Warning	LCH	Calcasieu	60 min
Mar 2, 7:45 PM CST	Severe Thunderstorm Warning	LCH	Rapides	65 min
Mar 2, 7:58 PM CST	Severe Thunderstorm Warning	LCH	Allen	47 min
Mar 2, 8:03 PM CST	Tornado Warning	LCH	Calcasieu	47 min
Mar 2, 8:19 PM CST	Severe Thunderstorm Warning	LCH	Vermilion	46 min
Mar 2, 8:32 PM CST	Severe Thunderstorm Warning	LCH	Cameron	63 min
Mar 2, 8:43 PM CST	Severe Thunderstorm Warning	LCH	Lafayette	47 min
Mar 2, 11:16 PM CST	Severe Thunderstorm Warning	LCH	Iberia	34 min
Mar 2, 11:41 PM CST	Severe Thunderstorm Warning	LCH	St. Mary	64 min
Mar 2, 6:08 PM CST	Tornado Warning	LCH	Newton	37 min
Mar 2, 6:15 PM CST	Tornado Warning	LCH	Jasper	50 min
Mar 2, 6:44 PM CST	Tornado Warning	LCH	Newton	46 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1999 Every severe thunderstorm warning in 1999

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.