Alert archive / Louisiana / Tornado Watches in 2000

Tornado Watch 785

November 8, 200017 parishes in Louisiana; 12 counties in Texas

The Storm Prediction Center issued this tornado watch at Nov 8, 2000, 6:00 AM CST for 17 parishes in Louisiana; 12 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Nov 8, 2000, 6:00 AM CST (12:00 UTC)
Expired: Nov 8, 2000, 12:00 PM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 29 counties

Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Catahoula Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Iberia Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Vermilion Parish, LA, Vernon Parish, LA, Angelina County, TX, Chambers County, TX, Hardin County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, Tyler County, TX

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Nov 8, 10:18 AM CST	Tornado Warning	LCH	Newton	57 min
Nov 8, 11:08 AM CST	Tornado Warning	LCH	Vernon	67 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.0 hours before the alert went out and 79 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: 935 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

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

119 
WWUS9 KMKC 081155
SEL5  

SEL5  
MKC WW 081149
LAZ000-TXZ000-CWZ000-081800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 785
STORM PREDICTION CENTER NORMAN OK
549 AM CST WED NOV 8 2000

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

   CENTRAL AND SOUTHERN LOUISIANA                          
   SOUTHEAST TEXAS                              
   COASTAL WATERS                     

EFFECTIVE THIS WEDNESDAY MORNING FROM 600 AM UNTIL NOON 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 75 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 65 MILES WEST NORTHWEST OF PORT ARTHUR TEXAS
TO 35 MILES NORTH NORTHEAST OF LAFAYETTE 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 TORNADO WATCH
NUMBER 783...SEVERE THUNDERSTORM WATCH NUMBER 784.  WATCH NUMBER
783...784 WILL NOT BE IN EFFECT AFTER 600 AM CST.

DISCUSSION...ISOLATED STRONG/SEVERE THUNDERSTORMS ARE EXPECTED TO
INCREASE DURING THE NEXT FEW HOURS OVER SOUTHEAST TX AS SURFACE LOW
MOVES INLAND.  COMBINATION OF SUFFICIENT INSTABILITY AND STRONG
SHEAR PROFILES SUGGEST THE POTENTIAL FOR SUPERCELLS PRODUCING LARGE
HAIL AND ISOLATED TORNADOES.

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 23030.

...HART

312,0950 314,0914 293,0914 291,0950

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 8, 12:00 AM CST	Tornado Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 7 more	6 hr
Nov 8, 1:45 AM CST	Severe Thunderstorm Watch	SPC	Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 15 more	4 hr
Nov 8, 12:00 PM CST	Tornado Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Bienville, Calcasieu and 27 more	6 hr
Nov 8, 3:00 PM CST	Tornado Watch	SPC	Madison	6 hr

Nearby

Tornado Watches in Louisiana, 2000 Tornado Watches in Texas, 2000 Every tornado watch in 2000

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.