Tornado Watch 241

Issued

Apr 27, 2011, 5:52 PM CDT (22:52 UTC)

Expired

Apr 28, 2011, 2:35 AM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Particularly dangerous situation

Yes

Largest hail expected

2 in

Strongest gust expected

60 kt

The Atlanta radar (KFFC), 146 km from the middle of the area, began a volume at 22:55 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

80%

One or more EF2 to EF5 tornadoes

70%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

60%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 627Apr 27, 2:22 PM CDT
• Mesoscale Discussion 629Apr 27, 2:56 PM CDT
• Mesoscale Discussion 634Apr 27, 5:01 PM CDT
• Mesoscale Discussion 637Apr 27, 5:41 PM CDT
• Mesoscale Discussion 640Apr 27, 6:39 PM CDT
• Mesoscale Discussion 642Apr 27, 7:55 PM CDT
• Mesoscale Discussion 646Apr 27, 9:20 PM CDT
• Mesoscale Discussion 648Apr 27, 11:09 PM CDT
• Mesoscale Discussion 649Apr 27, 11:27 PM CDT
• Mesoscale Discussion 655Apr 28, 2:30 AM CDT

230 
WWUS20 KWNS 272252
SEL1
SPC WW 272252
ALZ000-GAZ000-NCZ000-SCZ000-280600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 241
NWS STORM PREDICTION CENTER NORMAN OK
650 PM EDT WED APR 27 2011

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

       EASTERN ALABAMA
       NORTHERN AND CENTRAL GEORGIA
       WESTERN NORTH CAROLINA
       UPSTATE SOUTH CAROLINA

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 650 PM
UNTIL 200 AM EDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 2 INCHES 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 35 MILES NORTHWEST OF HICKORY
NORTH CAROLINA TO 35 MILES EAST SOUTHEAST OF MONTGOMERY ALABAMA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

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 232...WW 234...WW
235...WW 236...WW 237...WW 238...WW 239...WW 240...

DISCUSSION...LONG-LIVED SUPERCELLS WITH A HISTORY OF DESTRUCTIVE
TORNADOES OVER PORTIONS OF ERN TN AND AL ARE EXPECTED TO RAPIDLY
MOVE EWD INTO THE WW AREA THIS EVENING.  EWD MIGRATION OF 50-60+ KT
LLJ AXIS WILL SUPPORT CONTINUED AIR MASS DESTABILIZATION WITH MLCAPE
VALUES REMAINING IN THE 1000-2000 J/KG RANGE.  WHEN COUPLED WITH
50-70 KT EFFECTIVE BULK SHEAR AND STEADILY STRENGTHENING LOW-LEVEL
SHEAR...SETUP WILL REMAIN QUITE SUPPORTIVE OF SIGNIFICANT
TORNADOES...SOME OF WHICH COULD BE LONG-TRACKED.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24045.


...MEAD

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