Alert archive / Louisiana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 85

March 10, 200024 parishes in Louisiana; Wilkinson County, Mississippi; 22 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Mar 10, 2000, 4:00 PM CST for 24 parishes in Louisiana; Wilkinson County, Mississippi; 22 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 10, 2000, 4:00 PM CST (22:00 UTC)
Expired
Mar 10, 2000, 10:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 47 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, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA, Vernon Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Wilkinson County, MS, Angelina County, TX, Chambers County, TX, Fort Bend County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Leon County, TX, Liberty County, TX, Madison County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Sabine County, TX, San Jacinto County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Waller County, TX

The radar

The Lake Charles radar (KLCH), 91 km from the middle of the area, began a volume at 22:01 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

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

IssuedProductOfficeCountiesLasted
Mar 10, 4:05 PM CSTSevere Thunderstorm WarningHGXHouston, Trinity25 min
Mar 10, 4:14 PM CSTSevere Thunderstorm WarningLCHRapides61 min
Mar 10, 4:24 PM CSTTornado WarningLCHVernon66 min
Mar 10, 4:30 PM CSTSevere Thunderstorm WarningSHVAngelina60 min
Mar 10, 4:44 PM CSTSevere Thunderstorm WarningLCHAvoyelles61 min
Mar 10, 4:50 PM CSTSevere Thunderstorm WarningLCHTyler55 min
Mar 10, 5:25 PM CSTSevere Thunderstorm WarningLCHJasper50 min
Mar 10, 5:40 PM CSTSevere Thunderstorm WarningLCHTyler65 min
Mar 10, 6:04 PM CSTSevere Thunderstorm WarningLCHNewton56 min
Mar 10, 6:18 PM CSTSevere Thunderstorm WarningLCHJasper57 min
Mar 10, 6:30 PM CSTSevere Thunderstorm WarningLCHSaint Landry60 min
Mar 10, 6:35 PM CSTSevere Thunderstorm WarningHGXHouston40 min
Mar 10, 6:42 PM CSTSevere Thunderstorm WarningLCHVernon63 min
Mar 10, 7:20 PM CSTSevere Thunderstorm WarningHGXMadison40 min
Mar 10, 7:42 PM CSTSevere Thunderstorm WarningSHVSabine, San Augustine, Shelby48 min
Mar 10, 7:59 PM CSTTornado WarningHGXGrimes, Walker31 min
Mar 10, 8:31 PM CSTSevere Thunderstorm WarningSHVSabine, San Augustine, Shelby44 min
Mar 10, 8:42 PM CSTSevere Thunderstorm WarningSHVAngelina48 min
Mar 10, 8:56 PM CSTSevere Thunderstorm WarningHGXGrimes, Washington49 min
Mar 10, 9:50 PM CSTSevere Thunderstorm WarningHGXWaller40 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.0 hours before the alert went out and 93 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2000-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1937 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2000-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1937 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 102129
MKC WW 102129
LAZ000-TXZ000-CWZ000-110400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 85
STORM PREDICTION CENTER NORMAN OK
329 PM CST FRI MAR 10 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHERN LOUISIANA                          
   SOUTHEAST TEXAS                              
   COASTAL WATERS                     

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 400 PM UNTIL 1000
PM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 70 MILES NORTHWEST OF HOUSTON TEXAS
TO 20 MILES SOUTHEAST OF BATON ROUGE LOUISIANA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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...  CONTINUE...WW 83...WW 84...

DISCUSSION...SQUALL LINE MOVING SEWD ACROSS THE SABINE RIVER AREA
IS EXPECTED TO PROPAGATE INTO SERN TX/SRN LA DURING THE NEXT FEW
HOURS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIJMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 27035.


...VESCIO

;291,0905 292,0960 312,0960 312,0905;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 10, 1:00 PM CSTSevere Thunderstorm WatchSPCAvoyelles, Bienville, Bossier, Caddo, Caldwell, Catahoula and 23 more6 hr
Mar 10, 2:00 PM CSTSevere Thunderstorm WatchSPCAlcorn, Attala, Benton, Calhoun, Chickasaw, Choctaw and 35 more5 hr
Mar 10, 5:45 PM CSTTornado WatchSPCAmite, Clarke, Clay, Covington, Forrest, Greene and 26 more5 hr
Mar 10, 5:15 AM CSTSevere Thunderstorm WatchSPCArcher, Clay, Collin, Cooke, Dallas, Delta and 24 more6 hr
Mar 10, 9:45 AM CSTSevere Thunderstorm WatchSPCBell, Bosque, Burnet, Collin, Coryell, Dallas and 35 more5 hr
Mar 10, 4:00 PM CSTSevere Thunderstorm WatchSPCAnderson, Austin, Bandera, Bastrop, Bell, Blanco and 42 more6 hr

Nearby

Severe Thunderstorm Watches in Louisiana, 2000Severe Thunderstorm Watches in Texas, 2000Severe Thunderstorm Watches in Mississippi, 2000Every severe thunderstorm 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; radar from the NEXRAD Level II archive.