Alert archive / Alabama / Tornado Watches in 2001

Tornado Watch 23

February 16, 20014 states

The Storm Prediction Center issued this tornado watch at Feb 16, 2001, 1:15 PM CST for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Feb 16, 2001, 1:15 PM CST (19:15 UTC)
Expired
Feb 16, 2001, 7:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 79 counties

Autauga County, AL, Bibb County, AL, Blount County, AL, Calhoun County, AL, Cherokee County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Cullman County, AL, Dallas County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lawrence County, AL, Limestone County, AL, Lowndes County, AL, Madison County, AL, Marengo County, AL, Marion County, AL, Marshall County, AL, Monroe County, AL, Morgan County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Washington County, AL, Wilcox County, AL, Winston County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Gordon County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA, Clarke County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Jasper County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Marion County, MS, Newton County, MS, Noxubee County, MS, Perry County, MS, Wayne County, MS, Bedford County, TN, Bradley County, TN, Coffee County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Lincoln County, TN, Marion County, TN, Marshall County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Polk County, TN, Sequatchie County, TN

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 16, 1:21 PM CSTSevere Thunderstorm WarningBMXLimestone, Madison24 min
Feb 16, 1:24 PM CSTSevere Thunderstorm WarningJANKemper, Lowndes, Noxubee51 min
Feb 16, 1:34 PM CSTSevere Thunderstorm WarningBMXLamar, Pickens41 min
Feb 16, 1:39 PM CSTTornado WarningBMXMadison51 min
Feb 16, 1:52 PM CSTTornado WarningOHXFranklin48 min
Feb 16, 1:56 PM CSTTornado WarningBMXJackson34 min
Feb 16, 1:57 PM CSTSevere Thunderstorm WarningBMXGreene, Sumter48 min
Feb 16, 2:02 PM CSTSevere Thunderstorm WarningJANJasper, Smith43 min
Feb 16, 2:05 PM CSTSevere Thunderstorm WarningBMXFayette, Tuscaloosa40 min
Feb 16, 2:20 PM CSTTornado WarningJANJasper40 min
Feb 16, 2:24 PM CSTSevere Thunderstorm WarningJANNewton36 min
Feb 16, 2:25 PM CSTSevere Thunderstorm WarningBMXWalker50 min
Feb 16, 2:25 PM CSTTornado WarningBMXTuscaloosa35 min
Feb 16, 2:28 PM CSTSevere Thunderstorm WarningMRXMarion32 min
Feb 16, 2:32 PM CSTTornado WarningBMXJefferson, Walker43 min
Feb 16, 2:36 PM CSTSevere Thunderstorm WarningJANLauderdale39 min
Feb 16, 2:39 PM CSTSevere Thunderstorm WarningBMXBibb, Jefferson, Shelby51 min
Feb 16, 2:40 PM CSTSevere Thunderstorm WarningBMXWinston50 min
Feb 16, 2:41 PM CSTTornado WarningJANClarke49 min
Feb 16, 2:45 PM CSTSevere Thunderstorm WarningBMXBlount, Cullman45 min
Feb 16, 2:53 PM CSTTornado WarningBMXHale37 min
Feb 16, 2:56 PM CSTSevere Thunderstorm WarningJANMarion39 min
Feb 16, 2:57 PM CSTSevere Thunderstorm WarningMRXMarion, Sequatchie33 min
Feb 16, 3:03 PM CSTTornado WarningJANLauderdale27 min
Feb 16, 3:08 PM CSTSevere Thunderstorm WarningBMXMorgan37 min
Feb 16, 3:08 PM CSTSevere Thunderstorm WarningBMXSt. Clair52 min
Feb 16, 3:08 PM CSTTornado WarningBMXSumter52 min
Feb 16, 3:10 PM CSTTornado WarningJANJefferson Davis, Marion35 min
Feb 16, 3:13 PM CSTTornado WarningMOBChoctaw47 min
Feb 16, 3:16 PM CSTTornado WarningBMXBlount, Cullman29 min
Feb 16, 3:16 PM CSTTornado WarningBMXPerry29 min
Feb 16, 3:19 PM CSTSevere Thunderstorm WarningMRXHamilton56 min
Feb 16, 3:22 PM CSTSevere Thunderstorm WarningBMXEtowah, Marshall38 min
Feb 16, 3:26 PM CSTSevere Thunderstorm WarningBMXBibb64 min
Feb 16, 3:29 PM CSTSevere Thunderstorm WarningBMXShelby, Talladega31 min
Feb 16, 3:29 PM CSTTornado WarningJANCovington, Lamar41 min
Feb 16, 3:32 PM CSTSevere Thunderstorm WarningBMXChilton43 min
Feb 16, 3:33 PM CSTSevere Thunderstorm WarningBMXCalhoun42 min
Feb 16, 3:33 PM CSTSevere Thunderstorm WarningJANMarion42 min
Feb 16, 3:41 PM CSTSevere Thunderstorm WarningBMXCherokee, DeKalb64 min
Feb 16, 3:41 PM CSTSevere Thunderstorm WarningJANJasper34 min
Feb 16, 3:47 PM CSTTornado WarningJANJones43 min
Feb 16, 3:50 PM CSTSevere Thunderstorm WarningBMXClay, Cleburne55 min
Feb 16, 3:58 PM CSTSevere Thunderstorm WarningBMXTalladega32 min
Feb 16, 4:06 PM CSTSevere Thunderstorm WarningJANForrest, Lamar39 min
Feb 16, 4:10 PM CSTSevere Thunderstorm WarningMRXBradley, Hamilton65 min
Feb 16, 4:10 PM CSTSevere Thunderstorm WarningMRXMcMinn65 min
Feb 16, 4:11 PM CSTTornado WarningBMXCherokee, Cleburne34 min
Feb 16, 4:14 PM CSTSevere Thunderstorm WarningFFCFloyd, Haralson, Paulding, Polk46 min
Feb 16, 4:17 PM CSTTornado WarningMOBWayne28 min
Feb 16, 4:21 PM CSTTornado WarningJANClarke, Jasper39 min
Feb 16, 4:41 PM CSTSevere Thunderstorm WarningMOBPerry, Wayne49 min
Feb 16, 4:43 PM CSTSevere Thunderstorm WarningMRXPolk47 min
Feb 16, 4:54 PM CSTTornado WarningMOBChoctaw66 min
Feb 16, 6:24 PM CSTSevere Thunderstorm WarningBMXDallas36 min
Feb 16, 6:38 PM CSTSevere Thunderstorm WarningBMXAutauga37 min

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.3 hours before the alert went out and 100 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 2001-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 111 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 12:00Z on 2001-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 square meters per square second.1939587897Sfc1 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
111 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
507 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 161854
SEL3  

SEL3  
MKC WW 161845
ALZ000-GAZ000-MSZ000-TNZ000-170100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 23
STORM PREDICTION CENTER NORMAN OK
1245 PM CST FRI FEB 16 2001

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

   ALABAMA                            
   NORTHWEST GEORGIA                            
   EAST CENTRAL AND SOUTHEAST MISSISSIPPI                        
   SOUTHERN TENNESSEE                          

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 115 PM UNTIL 700
PM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 50 MILES SOUTH SOUTHEAST OF LAUREL MISSISSIPPI TO 40
MILES NORTH NORTHWEST OF CHATTANOOGA 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 22...

DISCUSSION...LINE OF SEVERE THUNDERSTORMS WITH EMBEDDED BOW ECHOES
IS MOVING EWD ACROSS CENTRAL/SWRN MS...WITH NEW CELLS DEVELOPING
NEAR THE FRONT OVER NWRN AL.  SOUTHERLY WINDS ARE INCREASING INTO
AL WITH STRENGTHENING CONVERGENCE NOTED ALONG FRONT NEAR
CBM/HSV/CHA LINE.  SURFACE PRESSURE FALLS ARE INCREASING FROM
CENTRAL MS NEWD INTO NRN AL IN ADVANCE OF SURFACE LOW NOW NEAR
JAN...SUGGESTING LOW WILL LIFT NEWD ALONG THE BOUNDARY.  18Z
SOUNDING AT BMX SHOWS VERY STRONG SHEAR AND SUFFICIENT INSTABILITY
TO SUPPORT SEVERE STORMS...INCLUDING POSSIBLE SUPERCELLS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 23045.


...WEISS

;305,0901 353,0865 353,0840 305,0873;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 16, 4:00 PM CSTTornado WatchSPCBullock, Chambers, Elmore, Lee, Lowndes, Macon and 4 more5 hr
Feb 16, 10:00 AM CSTTornado WatchSPCAdams, Amite, Attala, Carroll, Choctaw, Claiborne and 30 more5 hr

Nearby

Tornado Watches in Alabama, 2001Tornado Watches in Tennessee, 2001Tornado Watches in Mississippi, 2001Every tornado watch in 2001

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.