Alert archive / Louisiana / Tornado Watches in 2001

Tornado Watch 64

March 14, 200130 parishes in Louisiana; 5 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Mar 14, 2001, 5:45 PM CST for 30 parishes in Louisiana; 5 counties in Mississippi. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Mar 14, 2001, 5:45 PM CST (23:45 UTC)
Expired: Mar 14, 2001, 11:00 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 35 counties

Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Assumption Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Vermilion Parish, LA, Vernon Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Marion County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS

The radar

The Lake Charles radar (KLCH), 71 km from the middle of the area, began a volume at 23:48 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 14, 5:50 PM CST	Severe Thunderstorm Warning	LCH	Cameron	55 min
Mar 14, 7:55 PM CST	Severe Thunderstorm Warning	LCH	Lafayette, Vermilion	50 min
Mar 14, 8:11 PM CST	Tornado Warning	LCH	Iberia, Vermilion	34 min
Mar 14, 8:14 PM CST	Severe Thunderstorm Warning	LIX	Livingston, Tangipahoa	31 min
Mar 14, 8:42 PM CST	Severe Thunderstorm Warning	LIX	Assumption, Iberville	33 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.8 hours before the alert went out and 70 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: 2308 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 59 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 
WWUS9 KMKC 142337
SEL4  

SEL4  
MKC WW 142329
LAZ000-MSZ000-CWZ000-150500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 64
STORM PREDICTION CENTER NORMAN OK
529 PM CST WED MAR 14 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   CENTRAL AND SOUTHERN LOUISIANA                          
   SOUTHWEST MISSISSIPPI                        
   COASTAL WATERS                     

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 545 PM UNTIL
1100 PM CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 100 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES SOUTHWEST OF INTRACOASTAL CITY LOUISIANA TO
55 MILES EAST OF ALEXANDRIA LOUISIANA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 63.  WATCH NUMBER 63 WILL NOT BE IN
EFFECT AFTER 545 PM CST.  

DISCUSSION...WELL-DEFINED SUB-SYNOPTIC LOW AND ASSOCIATED SQUALL
LINE ATTM NEARING BPT EXPECTED TO CONTINUED ENE AOA 50 KTS.  MAIN
SURFACE WARM FRONT APPEARS TO STILL BE ABOUT 75 MILES OFF THE LA
COAST.  BUT STRENGTH OF DEEP LAYER SWLY SHEAR /OVER 100 KTS/...AND
1-2 KM DEEP LAYER OF 40 KT ESELY BOUNDARY LAYER FLOW SUGGEST
POTENTIAL FOR EMBEDDED SUPERCELLS AND POSSIBLE TORNADOES ALONG
SQUALL LINE.  

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24045.

...CORFIDI

;291,0941 312,0930 312,0894 291,0910;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 14, 2:30 PM CST	Severe Thunderstorm Watch	SPC	Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis	6 hr

Nearby

Tornado Watches in Louisiana, 2001 Tornado Watches in Mississippi, 2001 Every tornado 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; radar from the NEXRAD Level II archive.