Alert archive / Mississippi / Tornado Watches in 2000

Tornado Watch 17

January 9, 200026 counties in Alabama; 28 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Jan 9, 2000, 10:30 PM CST for 26 counties in Alabama; 28 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jan 9, 2000, 10:30 PM CST (04:30 UTC)
Expired: Jan 10, 2000, 4:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 54 counties

Bibb County, AL, Blount County, AL, Calhoun County, AL, Cherokee County, AL, Cullman 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, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Attala County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Copiah County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Jasper County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jan 9, 10:58 PM CST	Severe Thunderstorm Warning	JAN	Neshoba	32 min
Jan 9, 11:10 PM CST	Severe Thunderstorm Warning	BMX	Talladega	50 min
Jan 9, 11:35 PM CST	Severe Thunderstorm Warning	JAN	Scott, Smith	25 min
Jan 9, 11:58 PM CST	Severe Thunderstorm Warning	JAN	Newton, Scott	32 min
Jan 10, 12:05 AM CST	Severe Thunderstorm Warning	JAN	Jasper	25 min
Jan 10, 12:29 AM CST	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	31 min

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 4.5 hours before the alert went out and 171 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 395 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 700 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 162 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.

247 
WWUS9 KMKC 100407
SEL7  
MKC WW 100407
ALZ000-MSZ000-101000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 17
STORM PREDICTION CENTER NORMAN OK
1007 PM CST SUN JAN 9 2000

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

   NORTHERN AND CENTRAL ALABAMA                            
   CENTRAL AND EASTERN MISSISSIPPI                        

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1030 PM UNTIL
400 AM CST.

TORNADOES...HAIL TO 1 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 30 MILES WEST OF JACKSON MISSISSIPPI TO 35
MILES NORTHEAST OF GADSDEN 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...  CONTINUE...WW 16...

DISCUSSION...THREAT FOR BOW ECHOES AND ISOLATED SUPERCELLS WILL
INCREASE OVERNIGHT AS VERY POTENT UPPER SYSTEM EJECTS EWD ACROSS
THE TN VALLEY. GREATEST THREAT FOR TORNADOES WILL BE INVOF WARM
FRONT FROM NORTH OF JACKSON MS NEWD TO NRN AL.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 25040.


...VESCIO

332,0853 312,0903 331,0903 351,0853

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 9, 10:00 PM CST	Tornado Watch	SPC	Autauga, Bibb, Butler, Calhoun, Chambers, Cherokee and 24 more	6 hr
Jan 10, 1:00 AM CST	Tornado Watch	SPC	Baldwin, Barbour, Bullock, Coffee, Conecuh, Covington and 9 more	5 hr

Nearby

Tornado Watches in Mississippi, 2000 Tornado Watches in Alabama, 2000 Every 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.