Tornado Watch 889

Issued

Nov 16, 2011, 9:46 AM CST (15:46 UTC)

Expired

Nov 16, 2011, 4:51 PM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

The Birmingham radar (KBMX), 66 km from the middle of the area, began a volume at 15:47 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.

Two or more tornadoes

60%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 2330Nov 16, 7:25 AM CST
• Mesoscale Discussion 2331Nov 16, 9:59 AM CST
• Mesoscale Discussion 2332Nov 16, 12:17 PM CST

256 
WWUS20 KWNS 161547
SEL9
SPC WW 161547
ALZ000-FLZ000-GAZ000-NCZ000-TNZ000-CWZ000-170000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 889
NWS STORM PREDICTION CENTER NORMAN OK
945 AM CST WED NOV 16 2011

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

       ALABAMA
       WESTERN FLORIDA PANHANDLE
       WESTERN AND NORTHERN GEORGIA
       FAR WESTERN NORTH CAROLINA
       FAR SOUTHEAST TENNESSEE
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 945 AM UNTIL
600 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 APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH OF ROME GEORGIA
TO 30 MILES SOUTH SOUTHEAST OF EVERGREEN ALABAMA.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU9).

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 887. WATCH NUMBER 887 WILL NOT BE IN EFFECT AFTER
945 AM CST. CONTINUE...WW 888...

DISCUSSION...SFC LOW VICINITY OF HUN AS OF 15Z WILL CONTINUE TO
DEVELOP ENEWD ALONG LOW-LEVEL BAROCLINIC ZONE TODAY.
WAA/ISALLOBARIC FORCING IN ADVANCE OF THIS FEATURE WILL PROMOTE AN
INCREASE IN TORNADIC SUPERCELL POTENTIAL INTO THE SRN APPALACHIANS
WITHIN A STRONGLY SHEARED AND WEAKLY UNSTABLE ENVIRONMENT.  FARTHER
S...A CLUSTER OF SUPERCELLS IS ONGOING ACROSS CNTRL/SRN AL WITHIN A
VERY MOIST AND MODERATELY UNSTABLE ENVIRONMENT.  HERE TOO...LOW- AND
DEEP-LAYER SHEAR WILL REMAIN MORE THAN SUFFICIENT TO SUPPORT
ROTATING STORMS CAPABLE OF TORNADOES AND DAMAGING WINDS.

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 24035.


...MEAD

Tornado Watches in Alabama, 2011Tornado Watches in Georgia, 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; radar from the NEXRAD Level II archive.