Alert archive / Louisiana / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 44

March 3, 200117 parishes in Louisiana; Hancock County, Pearl River County, Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Mar 3, 2001, 12:15 PM CST for 17 parishes in Louisiana; Hancock County, Pearl River County, Mississippi. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Mar 3, 2001, 12:15 PM CST (18:15 UTC)
Expired: Mar 3, 2001, 4:00 PM CST
In force: 4 hr
Issued by: the Storm Prediction Center

Counties Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, Hancock County, MS, Pearl River County, MS

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Mar 3, 12:31 PM CST	Severe Thunderstorm Warning	LIX	Assumption, Lafourche, Saint Charles, Saint James, Saint John the Baptist, Terrebonne	44 min
Mar 3, 12:31 PM CST	Severe Thunderstorm Warning	LIX	Ascension	44 min
Mar 3, 1:45 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	60 min
Mar 3, 1:50 PM CST	Severe Thunderstorm Warning	LIX	Orleans, Saint Bernard	40 min
Mar 3, 1:50 PM CST	Severe Thunderstorm Warning	LIX	Jefferson, Saint Charles	40 min
Mar 3, 2:10 PM CST	Severe Thunderstorm Warning	LIX	Washington	35 min

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.3 hours before the alert went out and 33 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: 40 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 3, 9:45 AM CST	Tornado Watch	SPC	Saint Bernard	5 hr
Mar 3, 3:00 PM CST	Tornado Watch	SPC	George, Greene, Harrison, Jackson, Perry, Stone	6 hr

Nearby

Severe Thunderstorm Watches in Louisiana, 2001 Severe Thunderstorm Watches in Mississippi, 2001 Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.