Tornado Watch 890

Issued

Nov 16, 2011, 12:35 PM CST (18:35 UTC)

Expired

Nov 16, 2011, 8:00 PM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 2331Nov 16, 9:59 AM CST
• Mesoscale Discussion 2332Nov 16, 12:17 PM CST
• Mesoscale Discussion 2333Nov 16, 3:06 PM CST
• Mesoscale Discussion 2335Nov 16, 4:35 PM CST
• Mesoscale Discussion 2336Nov 16, 5:48 PM CST

371 
WWUS20 KWNS 161838
SEL0
SPC WW 161838
ALZ000-FLZ000-GAZ000-SCZ000-170200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 890
NWS STORM PREDICTION CENTER NORMAN OK
135 PM EST WED NOV 16 2011

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

       FAR SOUTHEAST ALABAMA
       WESTERN AND CENTRAL FLORIDA PANHANDLE
       GEORGIA
       WESTERN SOUTH CAROLINA

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 135 PM UNTIL
900 PM EST.

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 APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES WEST OF MOULTRIE
GEORGIA TO 20 MILES WEST NORTHWEST OF GREENVILLE SOUTH CAROLINA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 889...

DISCUSSION...PRE-FRONTAL CONVECTIVE BAND --COMPOSED OF SUPERCELLS
AND BOWING STRUCTURES-- IS EXPECTED TO MOVE/DEVELOP ACROSS THE WATCH
AREA THIS AFTERNOON AND EVENING.  AMBIENT INFLOW AIR MASS IS
CHARACTERIZED BY A MOIST BOUNDARY LAYER /I.E. DEWPOINTS IN THE
MID-UPPER 60S/ AND WARMING TEMPERATURES WITH MLCAPE VALUES OF
500-1500 J/KG.  VERTICAL SHEAR /BOTH IN THE LOW LEVELS AND THROUGH A
DEEP LAYER/ WILL REMAIN SUPPORTIVE OF CURRENTLY OBSERVED ORGANIZED
STORM MODES WITH ATTENDANT THREATS FOR DAMAGING WINDS AND A FEW
TORNADOES.

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 450.
MEAN STORM MOTION VECTOR 24035.


...MEAD

Tornado Watches in Georgia, 2011Tornado Watches in South Carolina, 2011Tornado Watches in Alabama, 2011Every tornado watch in 2011

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.