Alert archive / Alabama / Tornado Watches in 2004

Tornado Watch 868

October 19, 200422 counties in Alabama; 5 counties in Florida; 15 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Oct 19, 2004, 6:20 PM CDT for 22 counties in Alabama; 5 counties in Florida; 15 counties in Mississippi. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Oct 19, 2004, 6:20 PM CDT (23:20 UTC)
Expired
Oct 19, 2004, 10:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 42 counties

Barbour County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lowndes County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Sumter County, AL, Washington County, AL, Wilcox County, AL, Holmes County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Clarke County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Jasper County, MS, Jones County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Neshoba County, MS, Newton County, MS, Perry County, MS, Scott County, MS, Smith County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 139 km from the middle of the area, began a volume at 23:22 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
Oct 19, 6:23 PM CDTSevere Thunderstorm WarningMOBMonroe, Wilcox37 min
Oct 19, 6:42 PM CDTTornado WarningTAEGeneva33 min
Oct 19, 6:54 PM CDTSevere Thunderstorm WarningJANNewton51 min
Oct 19, 6:58 PM CDTSevere Thunderstorm WarningMOBConecuh, Monroe32 min
Oct 19, 7:08 PM CDTSevere Thunderstorm WarningMOBClarke22 min
Oct 19, 7:30 PM CDTSevere Thunderstorm WarningMOBMonroe30 min
Oct 19, 7:53 PM CDTTornado WarningMOBConecuh22 min
Oct 19, 8:32 PM CDTSevere Thunderstorm WarningJANLeake28 min
Oct 19, 9:07 PM CDTTornado WarningTAEHouston23 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

Birmingham, AL (KBMX), launched 12:00Z, 11.3 hours before the alert went out and 177 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, Birmingham, AL at 12:00Z on 2004-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1233 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, Birmingham, AL at 12:00Z on 2004-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
1233 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
574 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 192326
SEL8  
SPC WW 192320
ALZ000-FLZ000-MSZ000-200300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 868
NWS STORM PREDICTION CENTER NORMAN OK
620 PM CDT TUE OCT 19 2004

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

       SOUTHERN ALABAMA
       FLORIDA PANHANDLE
       EASTERN MISSISSIPPI

EFFECTIVE THIS TUESDAY EVENING FROM 620 PM UNTIL 1000 PM CDT.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 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 45 MILES NORTHWEST OF LAUREL MISSISSIPPI TO
20 MILES SOUTHEAST OF DOTHAN ALABAMA.

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 866...TORNADO WATCH NUMBER 867. WATCH NUMBER 866 867
WILL NOT BE IN EFFECT AFTER 620 PM CDT. 

DISCUSSION...STORMS ARE EXPECTED TO CONTINUE DEVELOPING ALONG
OUTFLOW BOUNDARY THAT STRETCHES FROM NORTH OF JAN SEWD TO NEAR MEI
AND DHN. ALTHOUGH DEEP WLY WINDS ARE LOCATED ABOVE THE BOUNDARY
LAYER...LOW LEVEL SHEAR NEAR THE BOUNDARY AND A MODERATELY UNSTABLE
AIR MASS IS FAVORABLE FOR SUPERCELLS WITH SEVERE HAIL. TORNADOES ARE
ALSO POSSIBLE...THOUGH THE THREAT WILL SLOWLY DIMINISH DURING THE
EVENING AS THE BOUNDARY LAYER SLOWLY COOLS/STABILIZES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 29025.


...IMY

330,0894 315,0851 301,0851 311,0894

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 18, 7:10 PM CDTTornado WatchSPCColbert, Fayette, Franklin, Greene, Hale, Lamar and 8 more4 hr
Oct 18, 10:33 PM CDTMesoscale DiscussionSPCColbert, Franklin, Lauderdale, Limestone117 min
Oct 18, 10:55 PM CDTTornado WatchSPCColbert, Franklin, Lauderdale, Lawrence, Limestone, Madison and 1 more5 hr
Oct 19, 2:04 AM CDTMesoscale DiscussionSPCColbert, Franklin, Jackson, Lauderdale, Lawrence, Limestone and 2 more86 min
Oct 19, 3:34 AM CDTMesoscale DiscussionSPCColbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 4 more26 min
Oct 19, 3:50 AM CDTSevere Thunderstorm WatchSPCCherokee, Colbert, Cullman, DeKalb, Etowah, Franklin and 9 more4 hr
Oct 19, 7:08 AM CDTMesoscale DiscussionSPCCherokee, Cullman, DeKalb, Etowah, Franklin, Jackson and 6 more2 hr
Oct 19, 9:05 AM CDTTornado WatchSPCAutauga, Bibb, Calhoun, Chambers, Chilton, Clay and 20 more7 hr
Oct 19, 11:06 AM CDTMesoscale DiscussionSPCBarbour, Butler, Choctaw, Clarke, Coffee, Conecuh and 10 more84 min
Oct 19, 12:00 PM CDTTornado WatchSPCBarbour, Bullock, Butler, Choctaw, Clarke, Coffee and 16 more7 hr
Oct 19, 1:15 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Calhoun, Chambers, Chilton, Clay and 20 more90 min
Oct 19, 3:08 PM CDTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Bullock, Butler, Calhoun and 43 more67 min
Oct 19, 3:30 PM CDTTornado WatchSPCAutauga, Bibb, Chilton, Clay, Coosa, Dallas and 16 more6 hr
Oct 19, 5:48 PM CDTMesoscale DiscussionSPCButler, Choctaw, Clarke, Coffee, Conecuh, Covington and 13 more117 min
Oct 18, 9:09 PM CDTMesoscale DiscussionSPCAlcorn, Benton2 hr
Oct 19, 1:35 PM CDTMesoscale DiscussionSPCAdams, Amite, Franklin, Hancock, Issaquena, Jefferson and 3 more2 hr

Nearby

Tornado Watches in Alabama, 2004Tornado Watches in Mississippi, 2004Tornado Watches in Florida, 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.