Tornado Watch 132

Issued

Apr 11, 2011, 7:08 PM CDT (00:08 UTC)

Expired

Apr 12, 2011, 2:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

The Atlanta radar (KFFC), 131 km from the middle of the area, began a volume at 00:07 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

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

10%

Ten or more severe hail reports

10%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 415Apr 11, 3:56 PM CDT
• Mesoscale Discussion 418Apr 11, 6:42 PM CDT
• Mesoscale Discussion 419Apr 11, 8:23 PM CDT
• Mesoscale Discussion 420Apr 11, 10:00 PM CDT
• Mesoscale Discussion 421Apr 12, 1:39 AM CDT

780 
WWUS20 KWNS 120018
SEL2
SPC WW 120018
ALZ000-GAZ000-NCZ000-SCZ000-TNZ000-120700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 132
NWS STORM PREDICTION CENTER NORMAN OK
810 PM EDT MON APR 11 2011

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

       EASTERN AND SOUTHERN ALABAMA
       WESTERN AND NORTHERN GEORGIA
       WESTERN NORTH CAROLINA
       WESTERN SOUTH CAROLINA
       EASTERN TENNESSEE

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 810 PM UNTIL
300 AM EDT.

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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHEAST OF BRISTOL
TENNESSEE TO 30 MILES WEST OF EVERGREEN ALABAMA.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU2).

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 130...WW 131...

DISCUSSION...TN/AL/SE MS QLCS HAS STRENGTHENED IN THE PAST 2 HRS AND
SHOULD CONTINUE GENERALLY ENEWD WHILE EMBEDDED STORMS MOVE RAPIDLY
NNE ALONG IT.  SUB-SYNOPTIC SFC LOW NOW NEAR HUN MAY IN PART REFLECT
ARRIVAL OF STRONGER FORCING FOR ASCENT ASSOCIATED WITH UPR JET
STREAK NOW ENTERING THE LWR MS VLY.  AS THE JET STREAK CONTINUES
EWD...THE SFC LOW SHOULD MOVE NE INTO ERN TN...EXTENDING THREAT FOR
ADDITIONAL LEWP DEVELOPMENT NEWD INTO THE HIGHER TERRAIN OF THAT
STATE AND N GA.  WHILE FORCING FOR ASCENT/MID LVL COOLING  MAY
REMAIN WEAKER FARTHER S OVER SRN AL...AVAILABILITY OF RICHER
MOISTURE AND PRESENCE OF EXISTING SUSTAINED UPDRAFTS SUGGEST EWD
SPREAD OF SVR THREAT FROM SE MS INTO AL.  THE MAIN SVR THREATS
SHOULD BE DMGG WINDS/ISOLD TORNADOES FROM SMALL SCALE BOWING
SEGMENTS/LEWPS.

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 24045.


...CORFIDI

Tornado Watches in Georgia, 2011Tornado Watches in Alabama, 2011Tornado Watches in Tennessee, 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.