Tornado Watch 149

Issued

Apr 16, 2011, 5:57 AM EDT (09:57 UTC)

Expired

Apr 16, 2011, 1:51 PM EDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Greer radar (KGSP), 90 km from the middle of the area, began a volume at 09:59 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

30%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

5%

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

80%

• Mesoscale Discussion 450Apr 16, 5:09 AM EDT
• Mesoscale Discussion 452Apr 16, 10:39 AM EDT

996 
WWUS20 KWNS 161003
SEL9
SPC WW 161003
GAZ000-NCZ000-SCZ000-161700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 149
NWS STORM PREDICTION CENTER NORMAN OK
600 AM EDT SAT APR 16 2011

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

       CENTRAL AND EASTERN GEORGIA
       WESTERN NORTH CAROLINA
       WESTERN AND CENTRAL SOUTH CAROLINA

EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 600 AM UNTIL
100 PM EDT.

TORNADOES...HAIL TO 1.5 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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF
CHARLOTTE NORTH CAROLINA TO 55 MILES SOUTH SOUTHEAST OF MACON
GEORGIA.  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 147. WATCH NUMBER 147 WILL NOT BE IN EFFECT AFTER
600 AM EDT. CONTINUE...WW 148...

DISCUSSION...SATELLITE AND VWP DATA SHOW AN UPR LVL IMPULSE ENTERING
MIDDLE TN ATTM...ROUNDING BASE OF SLOWLY-PROGRESSIVE IL UPR LOW.
ASCENT DOWNSTREAM OF THIS FEATURE...COUPLED WITH INCREASINGLY MOIST
LOW-LVL INFLOW UP THE SAVANNAH RVR VLY AND GA/SC CSTL PLN...MAY
SUPPORT SUSTENANCE OF EXISTING TSTMS MOVING INTO/ACROSS WW
AREA...AND/OR SUPPORT NEW DEVELOPMENT.  COUPLED WITH STRENGTH AND
CHARACTER OF WIND FIELD...AND EVENTUAL ONSET OF DAYTIME HEATING...
SETUP MAY YIELD A FEW SUPERCELLS POSING A THREAT FOR TORNADOES...
ADDITION TO LOCALLY DMGG WIND.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24040.


...CORFIDI

Tornado Watches in Georgia, 2011Tornado Watches in South Carolina, 2011Tornado Watches in North Carolina, 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.