Alert archive / Mississippi / Tornado Watches in 2004

Tornado Watch 894

November 24, 20048 parishes in Louisiana; 21 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Nov 24, 2004, 1:45 AM CST for 8 parishes in Louisiana; 21 counties in Mississippi. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Nov 24, 2004, 1:45 AM CST (07:45 UTC)
Expired
Nov 24, 2004, 6:00 AM CST
In force
4 hr
Issued by
the Storm Prediction Center
All 29 counties

East Baton Rouge Parish, LA, East Feliciana Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Jefferson County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Madison County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Warren County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 110 km from the middle of the area, began a volume at 07:49 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

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

IssuedProductOfficeCountiesLasted
Nov 24, 1:59 AM CSTTornado WarningJANLawrence, Marion46 min
Nov 24, 2:00 AM CSTSevere Thunderstorm WarningJANScott30 min
Nov 24, 2:01 AM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana59 min
Nov 24, 2:22 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Iberville, West Baton Rouge68 min
Nov 24, 2:25 AM CSTTornado WarningJANWinston35 min
Nov 24, 2:32 AM CSTSevere Thunderstorm WarningLIXAmite58 min
Nov 24, 2:48 AM CSTTornado WarningLIXLivingston27 min
Nov 24, 2:52 AM CSTSevere Thunderstorm WarningLIXSaint Helena, Tangipahoa53 min
Nov 24, 3:17 AM CSTSevere Thunderstorm WarningLIXLivingston58 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 7.8 hours before the alert went out and 107 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, Jackson, MS at 00:00Z on 2004-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1370 joules per kilogram.LCLLFCEL10008507005003002001001 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, Jackson, MS at 00:00Z on 2004-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 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
1370 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
1.9
Supercell composite
6.1

Open this sounding in Storm Lab

The text

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

217 
WWUS20 KWNS 240746
SEL4  
SPC WW 240745
LAZ000-MSZ000-241200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 894
NWS STORM PREDICTION CENTER NORMAN OK
145 AM CST WED NOV 24 2004

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

       EAST CENTRAL LOUISIANA
       CENTRAL AND SOUTHERN MISSISSIPPI

EFFECTIVE THIS WEDNESDAY MORNING FROM 145 AM UNTIL 600 AM CST.

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

THE TORNADO WATCH AREA IS ALONG AND 45 STATUTE MILES EAST AND WEST
OF A LINE FROM 75 MILES NORTH NORTHEAST OF JACKSON MISSISSIPPI TO
75 MILES SOUTHWEST OF MC COMB MISSISSIPPI.

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 890...TORNADO WATCH NUMBER 888. WATCH NUMBER 890 888
WILL NOT BE IN EFFECT AFTER 145 AM CST. CONTINUE...WW 891...WW
892...WW 893...

DISCUSSION...INTENSE SQUALL LINE IS CROSSING THE MS RIVER INTO
MS...WHILE SEVERAL SEVERE CELLS CONTINUE AHEAD OF LINE.  POTENTIAL
FOR DAMAGING WINDS AND ISOLATED TORNADOES WILL PERSIST IN THIS
REGION FOR ANOTHER FEW HOURS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24035.


...HART

331,0884 302,0903 302,0920 331,0902

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 23, 7:50 PM CSTTornado WatchSPCSabine6 hr
Nov 23, 7:53 PM CSTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 20 more37 min
Nov 23, 8:15 PM CSTTornado WatchSPCAllen, Avoyelles, Beauregard, Caldwell, Catahoula, Concordia and 21 more6 hr
Nov 23, 9:14 PM CSTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Catahoula, Concordia, East Carroll and 7 more2 hr
Nov 23, 10:01 PM CSTMesoscale DiscussionSPCAcadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 38 more119 min
Nov 23, 11:00 PM CSTSevere Thunderstorm WatchSPCAcadia, Ascension, Assumption, Calcasieu, Cameron, Iberia and 15 more7 hr
Nov 24, 12:30 AM CSTMesoscale DiscussionSPCSaint Tammany, Tangipahoa, Washington30 min
Nov 24, 12:45 AM CSTTornado WatchSPCSaint Helena, Tangipahoa, Washington5 hr
Nov 24, 1:28 AM CSTMesoscale DiscussionSPCAvoyelles, Concordia, East Baton Rouge, East Carroll, East Feliciana, Evangeline and 9 more32 min
Nov 24, 2:43 AM CSTMesoscale DiscussionSPCTangipahoa, Washington62 min
Nov 24, 2:50 AM CSTTornado WatchSPCAscension, Assumption, East Baton Rouge, Iberville, Jefferson, Lafourche and 11 more3 hr
Nov 24, 5:35 AM CSTMesoscale DiscussionSPCJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard25 min
Nov 24, 5:55 AM CSTTornado WatchSPCPlaquemines, Saint Bernard2 hr
Nov 23, 6:35 PM CSTTornado WatchSPCAlcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 28 more7 hr
Nov 23, 9:00 PM CSTMesoscale DiscussionSPCAlcorn, Itawamba, Prentiss, Tishomingo2 hr
Nov 23, 9:20 PM CSTTornado WatchSPCItawamba, Lowndes, Monroe, Tishomingo7 hr
Nov 24, 3:35 AM CSTMesoscale DiscussionSPCLowndes25 min
Nov 24, 4:57 AM CSTMesoscale DiscussionSPCClarke, Forrest, George, Greene, Lamar, Pearl River and 3 more63 min
Nov 24, 5:20 AM CSTTornado WatchSPCGeorge, Jackson6 hr
Nov 24, 10:16 AM CSTMesoscale DiscussionSPCAlcorn, Benton, Lafayette, Marshall, Prentiss, Tippah and 1 more2 hr

Nearby

Tornado Watches in Mississippi, 2004Tornado Watches in Louisiana, 2004Every tornado watch in 2004

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.