Alert archive / Alabama / Tornado Watches in 2000

Tornado Watch 790

November 8, 200027 counties in Alabama; 9 counties in Georgia; 25 counties in Tennessee

The Storm Prediction Center issued this tornado watch at Nov 8, 2000, 11:30 PM CST for 27 counties in Alabama; 9 counties in Georgia; 25 counties in Tennessee. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Nov 8, 2000, 11:30 PM CST (05:30 UTC)
Expired
Nov 9, 2000, 5:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 61 counties

Autauga County, AL, Bibb County, AL, Blount County, AL, Calhoun County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Greene County, AL, Hale County, AL, Jackson County, AL, Jefferson County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Perry County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Gordon County, GA, Murray County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Cannon County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Franklin County, TN, Grundy County, TN, Hamilton County, TN, Knox County, TN, Lincoln County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Sequatchie County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Birmingham radar (KBMX), 85 km from the middle of the area, began a volume at 05:29 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

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

IssuedProductOfficeCountiesLasted
Nov 8, 11:30 PM CSTTornado WarningBMXBibb, Perry45 min
Nov 8, 11:37 PM CSTSevere Thunderstorm WarningBMXJackson38 min
Nov 8, 11:37 PM CSTTornado WarningBMXTuscaloosa23 min
Nov 8, 11:52 PM CSTTornado WarningBMXFayette, Walker23 min
Nov 8, 11:57 PM CSTTornado WarningBMXJefferson33 min
Nov 8, 11:58 PM CSTTornado WarningBMXShelby32 min
Nov 9, 12:17 AM CSTSevere Thunderstorm WarningBMXJackson43 min
Nov 9, 12:25 AM CSTSevere Thunderstorm WarningMRXMarion50 min
Nov 9, 12:27 AM CSTTornado WarningBMXShelby33 min
Nov 9, 12:45 AM CSTTornado WarningBMXJefferson30 min
Nov 9, 1:01 AM CSTTornado WarningBMXSt. Clair29 min
Nov 9, 1:11 AM CSTSevere Thunderstorm WarningMRXMarion34 min
Nov 9, 1:31 AM CSTTornado WarningBMXPerry29 min
Nov 9, 1:56 AM CSTTornado WarningBMXEtowah34 min
Nov 9, 1:57 AM CSTTornado WarningBMXDeKalb48 min
Nov 9, 2:23 AM CSTTornado WarningBMXCherokee37 min
Nov 9, 2:40 AM CSTSevere Thunderstorm WarningFFCChattooga, Floyd35 min

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.5 hours before the alert went out and 84 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 00:00Z on 2000-11-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 158 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2000-11-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 261 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
158 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
261 m²/s²
0-3 km storm-relative helicity
382 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

228 
WWUS9 KMKC 090520
SEL0  

SEL0  
MKC WW 090515
ALZ000-GAZ000-TNZ000-091100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 790
STORM PREDICTION CENTER NORMAN OK
1115 PM CST WED NOV 8 2000

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

   CENTRAL..NORTHERN AND EASTERN ALABAMA                          
   NORTHWEST GEORGIA                            
   MIDDLE AND EAST TENNESSEE                          

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1130 PM
UNTIL 500 AM CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF CENTREVILLE ALABAMA TO
20 MILES EAST NORTHEAST OF CROSSVILLE TENNESSEE.

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...  CONTINUE...WW 788...WW 789...

DISCUSSION...THREAT WILL CONTINUE FOR LEWPS/BOWS AND ISOLATED
TORNADOES...BOTH ALONG MAIN NNE/SSW-ORIENTED SQUALL LINE ATTM IN
WRN/NRN AL...AND WITH ISOLATED CELLS AHEAD OF LINE.  LOW-LEVEL SRH
WILL CONTINUE TO BE ENHANCED INVOF BOUNDARY STALLED NW/SE ACROSS
CNTRL/NRN AL....WHERE GREATEST TORNADIC THREAT WILL EXIST. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 50 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 21035.

...CORFIDI

360,0833 322,0861 322,0883 360,0860

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 8, 8:00 PM CSTTornado WatchSPCChoctaw, Colbert, Cullman, Fayette, Franklin, Greene and 15 more6 hr
Nov 9, 12:00 AM CSTTornado WatchSPCAutauga, Baldwin, Butler, Choctaw, Clarke, Conecuh and 11 more5 hr
Nov 9, 3:15 AM CSTTornado WatchSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 21 more5 hr
Nov 9, 4:30 AM CSTTornado WatchSPCBarbour, Butler, Coffee, Conecuh, Covington, Crenshaw and 8 more6 hr
Nov 9, 10:00 AM CSTTornado WatchSPCHenry, Houston5 hr
Nov 9, 11:00 AM CSTTornado WatchSPCBedford, Bledsoe, Bradley, Cannon, Cheatham, Clay and 30 more5 hr
Nov 9, 2:00 PM CSTTornado WatchSPCAnderson, Blount, Campbell, Claiborne, Cocke, Grainger and 15 more5 hr

Nearby

Tornado Watches in Alabama, 2000Tornado Watches in Tennessee, 2000Tornado Watches in Georgia, 2000Every 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; radar from the NEXRAD Level II archive.