Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 248
NWS STORM PREDICTION CENTER NORMAN OK
100 AM EDT THU APR 28 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
GEORGIA
WESTERN NORTH CAROLINA
WESTERN AND CENTRAL SOUTH CAROLINA
EFFECTIVE THIS THURSDAY MORNING FROM 100 AM UNTIL 800 AM EDT.
TORNADOES...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 25 MILES NORTH NORTHWEST OF
HICKORY NORTH CAROLINA TO 55 MILES SOUTHEAST OF COLUMBUS GEORGIA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).
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 238...WW 239...WW
241...WW 242...WW 244...WW 245...WW 246...WW 247...
DISCUSSION...SUPERCELLS ONGOING FROM THE BLUE RIDGE TO NW OF MCN
WILL CONTINUE NEWD THROUGH A MOIST AND MODERATELY UNSTABLE AIR MASS
WITH MLCAPE OF 1000-2000 J/KG. AREA VWPS AND RUC DIAGNOSTIC DATA
INDICATE A VERY STRONGLY SHEARED ENVIRONMENT WITH EFFECTIVE SRH
VALUES AS HIGH AS 500-700 M2/S2. AS SUCH...ENVIRONMENT WILL REMAIN
QUITE SUPPORTIVE OF LONG-LIVED SUPERCELLS CAPABLE OF SIGNIFICANT
TORNADOES...LARGE HAIL AND DAMAGING WINDS.
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
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 248 TORNADO GA NC SC 280500Z - 281200Z
AXIS..90 STATUTE MILES EAST AND WEST OF LINE..
25NNW HKY/HICKORY NC/ - 55SE CSG/COLUMBUS GA/
..AVIATION COORDS.. 80NM E/W /36SE HMV - 18N ABY/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24045.
LAT...LON 36047994 31958273 31958580 36048316
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 248 Status Report Messages:
STATUS REPORT #2 ON WW 248
VALID 280740Z - 280840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 ENE TOI
TO 30 ENE LGC TO 25 SE AND TO 30 NW HKY.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 655
..GRAMS..04/28/11
ATTN...WFO...FFC...CAE...GSP...
&&
STATUS REPORT FOR WT 248
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC009-021-023-033-035-053-073-079-081-091-093-105-107-125-133-
141-153-159-163-167-169-171-175-181-189-193-197-207-215-221-225-
231-235-237-245-249-259-261-263-265-269-283-289-293-301-303-307-
315-317-319-280840-
GA
. GEORGIA COUNTIES INCLUDED ARE
BALDWIN BIBB BLECKLEY
BURKE BUTTS CHATTAHOOCHEE
COLUMBIA CRAWFORD CRISP
DODGE DOOLY ELBERT
EMANUEL GLASCOCK GREENE
HANCOCK HOUSTON JASPER
JEFFERSON JOHNSON JONES
LAMAR LAURENS LINCOLN
MCDUFFIE MACON MARION
MONROE MUSCOGEE OGLETHORPE
PEACH PIKE PULASKI
PUTNAM RICHMOND SCHLEY
STEWART SUMTER TALBOT
TALIAFERRO TAYLOR TREUTLEN
TWIGGS UPSON WARREN
WASHINGTON WEBSTER WILCOX
WILKES WILKINSON
$$
NCC003-023-025-027-035-045-059-071-097-109-119-159-179-280840-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ALEXANDER BURKE CABARRUS
CALDWELL CATAWBA CLEVELAND
DAVIE GASTON IREDELL
LINCOLN MECKLENBURG ROWAN
UNION
$$
SCC001-003-021-023-037-039-047-055-057-059-063-065-071-079-081-
087-091-280840-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
ABBEVILLE AIKEN CHEROKEE
CHESTER EDGEFIELD FAIRFIELD
GREENWOOD KERSHAW LANCASTER
LAURENS LEXINGTON MCCORMICK
NEWBERRY RICHLAND SALUDA
UNION YORK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 248
VALID 280640Z - 280740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNE LGC
TO 15 N AND TO 35 ESE TYS.
..GRAMS..04/28/11
ATTN...WFO...FFC...CAE...GSP...
&&
STATUS REPORT FOR WT 248
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC009-011-013-021-023-033-035-053-059-063-073-077-079-081-091-
093-105-107-113-119-125-133-141-145-147-151-153-157-159-163-167-
169-171-175-181-189-193-195-197-199-207-211-215-217-219-221-225-
231-235-237-245-247-249-255-259-261-263-265-269-283-285-289-293-
297-301-303-307-315-317-319-280740-
GA
. GEORGIA COUNTIES INCLUDED ARE
BALDWIN BANKS BARROW
BIBB BLECKLEY BURKE
BUTTS CHATTAHOOCHEE CLARKE
CLAYTON COLUMBIA COWETA
CRAWFORD CRISP DODGE
DOOLY ELBERT EMANUEL
FAYETTE FRANKLIN GLASCOCK
GREENE HANCOCK HARRIS
HART HENRY HOUSTON
JACKSON JASPER JEFFERSON
JOHNSON JONES LAMAR
LAURENS LINCOLN MCDUFFIE
MACON MADISON MARION
MERIWETHER MONROE MORGAN
MUSCOGEE NEWTON OCONEE
OGLETHORPE PEACH PIKE
PULASKI PUTNAM RICHMOND
ROCKDALE SCHLEY SPALDING
STEWART SUMTER TALBOT
TALIAFERRO TAYLOR TREUTLEN
TROUP TWIGGS UPSON
WALTON WARREN WASHINGTON
WEBSTER WILCOX WILKES
WILKINSON
$$
NCC003-011-021-023-025-027-035-045-059-071-087-089-097-099-109-
111-115-119-121-149-159-161-175-179-199-280740-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ALEXANDER AVERY BUNCOMBE
BURKE CABARRUS CALDWELL
CATAWBA CLEVELAND DAVIE
GASTON HAYWOOD HENDERSON
IREDELL JACKSON LINCOLN
MCDOWELL MADISON MECKLENBURG
MITCHELL POLK ROWAN
RUTHERFORD TRANSYLVANIA UNION
YANCEY
$$
SCC001-003-007-021-023-037-039-045-047-055-057-059-063-065-071-
077-079-081-083-087-091-280740-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
ABBEVILLE AIKEN ANDERSON
CHEROKEE CHESTER EDGEFIELD
FAIRFIELD GREENVILLE GREENWOOD
KERSHAW LANCASTER LAURENS
LEXINGTON MCCORMICK NEWBERRY
PICKENS RICHLAND SALUDA
SPARTANBURG UNION YORK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
High (70%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (50%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.