Alert archive / Texas / Tornado Watches in 2000

Tornado Watch 144

April 2, 200011 parishes in Louisiana; 17 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 2, 2000, 12:30 PM CDT for 11 parishes in Louisiana; 17 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 2, 2000, 12:30 PM CDT (17:30 UTC)
Expired: Apr 2, 2000, 6:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 28 counties

Acadia Parish, LA, Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Rapides Parish, LA, Vernon Parish, LA, Brazoria County, TX, Chambers County, TX, Fort Bend County, TX, Galveston County, TX, Hardin County, TX, Harris County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Matagorda County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Polk County, TX, San Jacinto County, TX, Tyler County, TX, Waller County, TX

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 2, 12:33 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria	57 min
Apr 2, 1:24 PM CDT	Tornado Warning	HGX	Brazoria, Matagorda	36 min
Apr 2, 1:31 PM CDT	Severe Thunderstorm Warning	HGX	Galveston, Harris	59 min
Apr 2, 2:08 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	67 min
Apr 2, 2:21 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson	54 min
Apr 2, 2:26 PM CDT	Severe Thunderstorm Warning	HGX	Liberty	64 min
Apr 2, 2:37 PM CDT	Severe Thunderstorm Warning	HGX	Galveston	53 min
Apr 2, 2:41 PM CDT	Tornado Warning	LCH	Orange	64 min
Apr 2, 3:14 PM CDT	Tornado Warning	LCH	Calcasieu	61 min
Apr 2, 3:49 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard	56 min
Apr 2, 3:51 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson	54 min
Apr 2, 3:59 PM CDT	Severe Thunderstorm Warning	LCH	Orange	61 min
Apr 2, 4:25 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron	65 min
Apr 2, 4:45 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	60 min
Apr 2, 5:08 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson	67 min
Apr 2, 5:24 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	66 min
Apr 2, 5:40 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson Davis	65 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.5 hours before the alert went out and 126 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: 984 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 512 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

180 
WWUS9 KMKC 021653
SEL4  

SEL4  
MKC WW 021653
LAZ000-TXZ000-CWZ000-022300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 144
STORM PREDICTION CENTER NORMAN OK
1153 AM CDT SUN APR 2 2000

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

   SOUTHWEST LOUISIANA                          
   SOUTHEAST TEXAS                              
   COASTAL WATERS                     

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL 600
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 55 MILES WEST SOUTHWEST OF HOUSTON TEXAS TO 20
MILES SOUTHEAST 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.


DISCUSSION...SURFACE BOUNDARY TX COAST NEWD INTO CENTRAL LA.  VERY
UNSTABLE AIRMASS IN AREA WITH STRONG DEEP LAYER SHEAR.  STORMS
RAPIDLY DEVELOPING TX COAST NEAR VCT WILL INTENSIFY AND MOVE NEWD. 
SUFFICIENT SHEAR AND INSTABILITY FOR TORNADIC SUPERCELL
DEVELOPMENT...PARTICULARLY VICINITY BOUNDARY.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 24035.


...HALES

301,0960 320,0920 301,0920 282,0960

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 2, 1:30 AM CST	Severe Thunderstorm Watch	SPC	Beauregard, Bienville, De Soto, Grant, Natchitoches, Rapides and 4 more	6 hr
Apr 2, 4:00 AM CDT	Severe Thunderstorm Watch	SPC	Bienville, Caldwell, Catahoula, East Carroll, Franklin, Grant and 11 more	4 hr
Apr 2, 3:00 PM CDT	Tornado Watch	SPC	Catahoula, Concordia, East Carroll, Franklin, Madison, Richland and 2 more	6 hr
Apr 2, 6:00 PM CDT	Tornado Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 7 more	6 hr
Apr 1, 8:00 PM CST	Severe Thunderstorm Watch	SPC	Atascosa, Bastrop, Bee, Bexar, Blanco, Caldwell and 25 more	6 hr

Nearby

Tornado Watches in Texas, 2000 Tornado Watches in Louisiana, 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.