Alert archive / Alabama / Tornado Watches in 2003

Tornado Watch 960

November 18, 200344 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida; George County, Greene County, Jackson County, Mississippi

The Storm Prediction Center issued this tornado watch at Nov 18, 2003, 11:25 AM CST for 44 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida; George County, Greene County, Jackson County, Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Nov 18, 2003, 11:25 AM CST (17:25 UTC)
Expired
Nov 18, 2003, 5:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 50 counties

Autauga County, AL, Baldwin County, AL, Bibb County, AL, Blount County, AL, Butler County, AL, Calhoun County, AL, Cherokee County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Cullman County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lowndes County, AL, Marengo County, AL, Marion County, AL, Marshall County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Washington County, AL, Wilcox County, AL, Winston County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, George County, MS, Greene County, MS, Jackson County, MS

The radar

The Birmingham radar (KBMX), 152 km from the middle of the area, began a volume at 17:27 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
Nov 18, 11:48 AM CSTSevere Thunderstorm WarningMOBGeorge, Greene27 min
Nov 18, 11:53 AM CSTTornado WarningBMXTuscaloosa52 min
Nov 18, 11:57 AM CSTTornado WarningBMXDallas48 min
Nov 18, 11:58 AM CSTTornado WarningBMXFayette, Walker47 min
Nov 18, 12:06 PM CSTSevere Thunderstorm WarningBMXMarengo39 min
Nov 18, 12:13 PM CSTSevere Thunderstorm WarningHUNCullman, Limestone, Morgan47 min
Nov 18, 12:13 PM CSTSevere Thunderstorm WarningLIXJackson47 min
Nov 18, 12:18 PM CSTSevere Thunderstorm WarningMOBMobile, Washington57 min
Nov 18, 12:20 PM CSTTornado WarningBMXJefferson40 min
Nov 18, 12:24 PM CSTTornado WarningBMXChilton51 min
Nov 18, 12:40 PM CSTTornado WarningHUNCullman50 min
Nov 18, 12:43 PM CSTSevere Thunderstorm WarningBMXShelby47 min
Nov 18, 12:55 PM CSTTornado WarningBMXJefferson35 min
Nov 18, 1:02 PM CSTSevere Thunderstorm WarningHUNMarshall58 min
Nov 18, 1:03 PM CSTTornado WarningBMXBlount, St. Clair, Shelby42 min
Nov 18, 1:11 PM CSTTornado WarningBMXChilton34 min
Nov 18, 1:18 PM CSTTornado WarningBMXPerry27 min
Nov 18, 2:08 PM CSTSevere Thunderstorm WarningMOBBaldwin37 min
Nov 18, 2:50 PM CSTSevere Thunderstorm WarningMOBBaldwin40 min
Nov 18, 3:13 PM CSTSevere Thunderstorm WarningBMXAutauga, Chilton32 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, 5.4 hours before the alert went out and 153 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 2003-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2003-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1123 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 181725
SEL0  
SPC WW 181725
ALZ000-FLZ000-MSZ000-CWZ000-182300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 960 
NWS STORM PREDICTION CENTER NORMAN OK 
1125 AM CST TUE NOV 18 2003

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

       MUCH OF ALABAMA
       EXTREME WESTERN FLORIDA
       SOUTHEAST MISSISSIPPI
       COASTAL WATERS

EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 1125 AM UNTIL
500 PM 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 EAST AND WEST
OF A LINE FROM 40 MILES NORTHWEST OF GADSDEN ALABAMA TO 30 MILES
WEST SOUTHWEST OF PENSACOLA FLORIDA.

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 958. WATCH NUMBER 958 WILL NOT BE IN EFFECT AFTER
1125 AM CST. CONTINUE...WW 959...


DISCUSSION...LINE OF STRONG/SEVERE STORMS CONTINUES TO TRACK
EASTWARD ACROSS WESTERN/CENTRAL AL AND WESTERN FL PANHANDLE THROUGH
THE AFTERNOON. VERY STRONG WIND FIELDS AND INCREASING LOW LEVEL
MOISTURE INDICATE A THREAT OF DAMAGING WINDS AND ISOLATED TORNADOES.
 THREAT WILL ALSO EXIST WITH ISOLATED STORMS AHEAD OF LINE SPREADING
NORTHWARD FROM THE GULF OF MEXICO INTO THE WESTERN FL PANHANDLE.

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 23040.


...HART

342,0851 301,0862 301,0885 342,0875

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 18, 6:08 AM CSTMesoscale DiscussionSPCChoctaw, Colbert, Franklin, Lamar, Marion, Pickens and 1 more2 hr
Nov 18, 6:55 AM CSTTornado WatchSPCChoctaw, Colbert, Fayette, Franklin, Greene, Lamar and 9 more5 hr
Nov 18, 8:58 AM CSTMesoscale DiscussionSPCBaldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 4 more92 min
Nov 18, 10:30 AM CSTMesoscale DiscussionSPCBaldwin, Bibb, Blount, Butler, Chilton, Choctaw and 26 more90 min
Nov 18, 1:33 PM CSTMesoscale DiscussionSPCDeKalb, Jackson, Madison57 min
Nov 18, 1:55 PM CSTTornado WatchSPCDeKalb, Jackson5 hr
Nov 18, 1:59 PM CSTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Calhoun, Chambers and 23 more91 min
Nov 18, 4:31 PM CSTMesoscale DiscussionSPCBarbour, Bullock, Butler, Chambers, Clay, Cleburne and 16 more29 min
Nov 18, 4:55 PM CSTTornado WatchSPCBarbour, Bullock, Chambers, Coffee, Covington, Crenshaw and 11 more5 hr
Nov 18, 1:29 AM CSTMesoscale DiscussionSPCBolivar, Coahoma, DeSoto, Leflore, Marshall, Panola and 5 more3 hr
Nov 18, 1:55 AM CSTTornado WatchSPCBolivar, Coahoma, DeSoto, Holmes, Humphreys, Leflore and 7 more6 hr
Nov 18, 2:08 AM CSTMesoscale DiscussionSPCAdams, Amite, Claiborne, Copiah, Franklin, Hinds and 9 more97 min
Nov 18, 2:25 AM CSTTornado WatchSPCAdams, Amite, Claiborne, Copiah, Franklin, Hinds and 18 more6 hr
Nov 18, 4:48 AM CSTMesoscale DiscussionSPCAdams, Amite, Attala, Carroll, Claiborne, Copiah and 29 more117 min
Nov 18, 2:50 PM CSTSevere Thunderstorm WatchSPCBolivar, Washington5 hr

Nearby

Tornado Watches in Alabama, 2003Tornado Watches in Florida, 2003Tornado Watches in Mississippi, 2003Every tornado watch in 2003

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.