Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 456
NWS STORM PREDICTION CENTER NORMAN OK
140 AM EDT THU JUN 18 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHWEST TO SOUTHEAST GEORGIA
SOUTHWEST SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS THURSDAY MORNING FROM 140 AM UNTIL 700 AM EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH
SOUTHWEST OF ROME GEORGIA TO 30 MILES SOUTH SOUTHEAST OF SAVANNAH
GEORGIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 447...WW 448...WW
453...WW 454...WW 455...
DISCUSSION...CLUSTERS/LINES OF INTENSE CONVECTION OVER EASTERN
GA/WESTERN SC WILL CONTINUE TRACKING SOUTHWARD ACROSS THE WATCH AREA
FOR ANOTHER FEW HOURS. AMPLE MOISTURE/INSTABILITY AND NORTHERLY
FLOW ALOFT MAY ALLOW SEVERE THREAT TO SPREAD ALL THE WAY TO THE
COAST LATE TONIGHT.
AVIATION...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 34035.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 456 SEVERE TSTM GA SC CW 180540Z - 181100Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
20SSW RMG/ROME GA/ - 30SSE SAV/SAVANNAH GA/
..AVIATION COORDS.. 60NM N/S /51WNW ATL - 26SSE SAV/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 34035.
LAT...LON 35098530 32748100 30718100 33068530
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 456 Status Report Messages:
STATUS REPORT #3 ON WW 456
VALID 180935Z - 181100Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW AYS
TO 25 NE SAV.
WW 456 WILL BE ALLOWED TO EXPIRE ON OR BEFORE 181100Z.
..CARBIN..06/18/09
ATTN...WFO...JAX...FFC...CHS...
&&
STATUS REPORT FOR WS 456
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC001-005-025-029-051-127-179-183-191-229-305-181100-
GA
. GEORGIA COUNTIES INCLUDED ARE
APPLING BACON BRANTLEY
BRYAN CHATHAM GLYNN
LIBERTY LONG MCINTOSH
PIERCE WAYNE
$$
SCC013-019-029-053-181100-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT CHARLESTON COLLETON
JASPER
$$
AMZ330-350-352-354-181100-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHARLESTON HARBOR
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20
NM
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM
...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 456
VALID 180800Z - 180940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SW MCN TO
45 SE AGS.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1197
..CARBIN..06/18/09
ATTN...WFO...JAX...FFC...CHS...
&&
STATUS REPORT FOR WS 456
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC001-005-023-025-029-031-043-051-069-091-103-107-109-127-153-
161-165-167-175-179-183-191-209-229-235-251-267-271-279-283-289-
305-309-315-180940-
GA
. GEORGIA COUNTIES INCLUDED ARE
APPLING BACON BLECKLEY
BRANTLEY BRYAN BULLOCH
CANDLER CHATHAM COFFEE
DODGE EFFINGHAM EMANUEL
EVANS GLYNN HOUSTON
JEFF DAVIS JENKINS JOHNSON
LAURENS LIBERTY LONG
MCINTOSH MONTGOMERY PIERCE
PULASKI SCREVEN TATTNALL
TELFAIR TOOMBS TREUTLEN
TWIGGS WAYNE WHEELER
WILCOX
$$
SCC005-013-015-019-029-035-049-053-180940-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
ALLENDALE BEAUFORT BERKELEY
CHARLESTON COLLETON DORCHESTER
HAMPTON JASPER
$$
AMZ330-350-352-354-180940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHARLESTON HARBOR
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20
NM
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM
...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 456
VALID 180700Z - 180840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 ESE CHA
TO 40 N MCN TO 45 SW AGS TO 25 SE AGS.
..CARBIN..06/18/09
ATTN...WFO...JAX...FFC...CHS...
&&
STATUS REPORT FOR WS 456
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC001-005-009-021-023-025-029-031-043-051-069-091-103-107-109-
127-153-161-165-167-169-175-179-183-191-209-225-229-235-251-267-
271-279-283-289-303-305-309-315-319-180840-
GA
. GEORGIA COUNTIES INCLUDED ARE
APPLING BACON BALDWIN
BIBB BLECKLEY BRANTLEY
BRYAN BULLOCH CANDLER
CHATHAM COFFEE DODGE
EFFINGHAM EMANUEL EVANS
GLYNN HOUSTON JEFF DAVIS
JENKINS JOHNSON JONES
LAURENS LIBERTY LONG
MCINTOSH MONTGOMERY PEACH
PIERCE PULASKI SCREVEN
TATTNALL TELFAIR TOOMBS
TREUTLEN TWIGGS WASHINGTON
WAYNE WHEELER WILCOX
WILKINSON
$$
SCC005-013-015-019-029-035-049-053-180840-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
ALLENDALE BEAUFORT BERKELEY
CHARLESTON COLLETON DORCHESTER
HAMPTON JASPER
$$
AMZ330-350-352-354-180840-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHARLESTON HARBOR
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20
NM
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM
...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
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 (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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.
weather.gov 
