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.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 179
NWS STORM PREDICTION CENTER NORMAN OK
315 PM EDT MON APR 20 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN GEORGIA
EASTERN NORTH CAROLINA
EASTERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
1000 PM 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 55
STATUTE MILES EITHER SIDE OF A LINE FROM 55 MILES NORTH NORTHWEST
OF CAPE HATTERAS NORTH CAROLINA TO 45 MILES SOUTH SOUTHWEST OF
SAVANNAH GEORGIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
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 178...
DISCUSSION...MULTIPLE BANDS OF THUNDERSTORMS ARE STRENGTHENING OVER
THE EASTERN CAROLINAS AND NORTHEAST GA. A MODERATELY UNSTABLE
AIRMASS AND FAVORABLE EFFECTIVE SHEAR PROFILES WILL PROMOTE
ORGANIZED STORMS CAPABLE OF LARGE HAIL AND DAMAGING WINDS.
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 450. MEAN STORM
MOTION VECTOR 24030.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 179 SEVERE TSTM GA NC SC CW 201915Z - 210200Z
AXIS..55 STATUTE MILES EITHER SIDE OF LINE..
55NNW HSE/CAPE HATTERAS NC/ - 45SSW SAV/SAVANNAH GA/
..AVIATION COORDS.. 50NM EITHER SIDE /20SSE ECG - 43SSW SAV/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 24030.
LAT...LON 35347537 30908091 32138208 36567662
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 179 Status Report Messages:
STATUS REPORT #5 ON WW 179
VALID 210030Z - 210140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E ILM TO
25 WSW GSB.
..DIAL..04/21/09
ATTN...WFO...CHS...MHX...ILM...RAH...
&&
STATUS REPORT FOR WS 179
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC013-031-049-055-061-079-095-103-107-117-133-137-147-177-187-
210140-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT CARTERET CRAVEN
DARE DUPLIN GREENE
HYDE JONES LENOIR
MARTIN ONSLOW PAMLICO
PITT TYRRELL WASHINGTON
$$
AMZ130-135-150-152-154-156-158-210140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
ALBEMARLE SOUND
PAMLICO SOUND
COASTAL WATERS FROM CURRITUCK BEACH LIGHT TO OREGON INLET NC OUT
20 NM
COASTAL WATERS FROM OREGON INLET TO CAPE HATTERAS NC OUT 20 NM
COASTAL WATERS FROM CAPE HATTERAS TO OCRACOKE INLET NC OUT 20 NM
COASTAL WATERS FROM OCRACOKE INLET TO CAPE LOOKOUT NC OUT 20 NM
COASTAL WATERS FROM CAPE LOOKOUT TO SURF CITY NC OUT 20 NM
$$
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.
$$
STATUS REPORT #4 ON WW 179
VALID 202345Z - 210040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SSE CRE
TO 25 E FLO TO 30 NE FLO.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 542
..DIAL..04/20/09
ATTN...WFO...CHS...MHX...ILM...RAH...
&&
STATUS REPORT FOR WS 179
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC013-017-019-031-047-049-051-055-061-079-095-101-103-107-117-
129-133-137-141-147-155-163-177-187-191-195-210040-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BLADEN BRUNSWICK
CARTERET COLUMBUS CRAVEN
CUMBERLAND DARE DUPLIN
GREENE HYDE JOHNSTON
JONES LENOIR MARTIN
NEW HANOVER ONSLOW PAMLICO
PENDER PITT ROBESON
SAMPSON TYRRELL WASHINGTON
WAYNE WILSON
$$
SCC033-051-210040-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
DILLON HORRY
$$
AMZ130-135-150-152-154-156-158-250-252-254-210040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
ALBEMARLE SOUND
PAMLICO SOUND
COASTAL WATERS FROM CURRITUCK BEACH LIGHT TO OREGON INLET NC OUT
20 NM
COASTAL WATERS FROM OREGON INLET TO CAPE HATTERAS NC OUT 20 NM
COASTAL WATERS FROM CAPE HATTERAS TO OCRACOKE INLET NC OUT 20 NM
COASTAL WATERS FROM OCRACOKE INLET TO CAPE LOOKOUT NC OUT 20 NM
COASTAL WATERS FROM CAPE LOOKOUT TO SURF CITY NC OUT 20 NM
COASTAL WATERS FROM SURF CITY TO CAPE FEAR NC OUT 20 NM
COASTAL WATERS FROM CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20
NM
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
$$
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.
$$
STATUS REPORT #3 ON WW 179
VALID 202230Z - 202340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..DIAL..04/20/09
ATTN...WFO...CHS...MHX...ILM...RAH...
&&
STATUS REPORT FOR WS 179
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC029-051-103-179-183-191-202340-
GA
. GEORGIA COUNTIES INCLUDED ARE
BRYAN CHATHAM EFFINGHAM
LIBERTY LONG MCINTOSH
$$
NCC013-017-019-031-047-049-051-055-061-079-085-093-095-101-103-
105-107-117-125-129-133-137-141-147-155-163-165-177-187-191-195-
202340-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BLADEN BRUNSWICK
CARTERET COLUMBUS CRAVEN
CUMBERLAND DARE DUPLIN
GREENE HARNETT HOKE
HYDE JOHNSTON JONES
LEE LENOIR MARTIN
MOORE NEW HANOVER ONSLOW
PAMLICO PENDER PITT
ROBESON SAMPSON SCOTLAND
TYRRELL WASHINGTON WAYNE
WILSON
$$
SCC013-015-019-029-031-033-035-041-043-049-051-053-067-069-089-
202340-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BERKELEY CHARLESTON
COLLETON DARLINGTON DILLON
DORCHESTER FLORENCE GEORGETOWN
HAMPTON HORRY JASPER
MARION MARLBORO WILLIAMSBURG
$$
AMZ130-135-150-152-154-156-158-250-252-254-256-330-350-352-354-
202340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
ALBEMARLE SOUND
PAMLICO SOUND
COASTAL WATERS FROM CURRITUCK BEACH LIGHT TO OREGON INLET NC OUT
20 NM
COASTAL WATERS FROM OREGON INLET TO CAPE HATTERAS NC OUT 20 NM
COASTAL WATERS FROM CAPE HATTERAS TO OCRACOKE INLET NC OUT 20 NM
COASTAL WATERS FROM OCRACOKE INLET TO CAPE LOOKOUT NC OUT 20 NM
COASTAL WATERS FROM CAPE LOOKOUT TO SURF CITY NC OUT 20 NM
COASTAL WATERS FROM SURF CITY TO CAPE FEAR NC OUT 20 NM
COASTAL WATERS FROM CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20
NM
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
COASTAL WATERS FROM MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT
20 NM
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 179
VALID 202145Z - 202240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..DIAL..04/20/09
ATTN...WFO...CHS...MHX...ILM...RAH...
&&
STATUS REPORT FOR WS 179
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC029-051-103-179-183-191-202240-
GA
. GEORGIA COUNTIES INCLUDED ARE
BRYAN CHATHAM EFFINGHAM
LIBERTY LONG MCINTOSH
$$
NCC013-017-019-031-047-049-051-055-061-079-085-093-095-101-103-
105-107-117-125-129-133-137-141-147-155-163-165-177-187-191-195-
202240-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BLADEN BRUNSWICK
CARTERET COLUMBUS CRAVEN
CUMBERLAND DARE DUPLIN
GREENE HARNETT HOKE
HYDE JOHNSTON JONES
LEE LENOIR MARTIN
MOORE NEW HANOVER ONSLOW
PAMLICO PENDER PITT
ROBESON SAMPSON SCOTLAND
TYRRELL WASHINGTON WAYNE
WILSON
$$
SCC013-015-019-029-031-033-035-041-043-049-051-053-067-069-089-
202240-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BERKELEY CHARLESTON
COLLETON DARLINGTON DILLON
DORCHESTER FLORENCE GEORGETOWN
HAMPTON HORRY JASPER
MARION MARLBORO WILLIAMSBURG
$$
AMZ130-135-150-152-154-156-158-250-252-254-256-330-350-352-354-
202240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
ALBEMARLE SOUND
PAMLICO SOUND
COASTAL WATERS FROM CURRITUCK BEACH LIGHT TO OREGON INLET NC OUT
20 NM
COASTAL WATERS FROM OREGON INLET TO CAPE HATTERAS NC OUT 20 NM
COASTAL WATERS FROM CAPE HATTERAS TO OCRACOKE INLET NC OUT 20 NM
COASTAL WATERS FROM OCRACOKE INLET TO CAPE LOOKOUT NC OUT 20 NM
COASTAL WATERS FROM CAPE LOOKOUT TO SURF CITY NC OUT 20 NM
COASTAL WATERS FROM SURF CITY TO CAPE FEAR NC OUT 20 NM
COASTAL WATERS FROM CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20
NM
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
COASTAL WATERS FROM MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT
20 NM
CHARLESTON HARBOR
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20
NM
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM
...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY
$$
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.
$$
STATUS REPORT #1 ON WW 179
VALID 202025Z - 202140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GUYER..04/20/09
ATTN...WFO...CHS...MHX...ILM...RAH...
&&
STATUS REPORT FOR WS 179
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC029-051-103-179-183-191-202140-
GA
. GEORGIA COUNTIES INCLUDED ARE
BRYAN CHATHAM EFFINGHAM
LIBERTY LONG MCINTOSH
$$
NCC013-017-019-031-047-049-051-055-061-079-085-093-095-101-103-
105-107-117-125-129-133-137-141-147-155-163-165-177-187-191-195-
202140-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BLADEN BRUNSWICK
CARTERET COLUMBUS CRAVEN
CUMBERLAND DARE DUPLIN
GREENE HARNETT HOKE
HYDE JOHNSTON JONES
LEE LENOIR MARTIN
MOORE NEW HANOVER ONSLOW
PAMLICO PENDER PITT
ROBESON SAMPSON SCOTLAND
TYRRELL WASHINGTON WAYNE
WILSON
$$
SCC013-015-019-029-031-033-035-041-043-049-051-053-067-069-089-
202140-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BEAUFORT BERKELEY CHARLESTON
COLLETON DARLINGTON DILLON
DORCHESTER FLORENCE GEORGETOWN
HAMPTON HORRY JASPER
MARION MARLBORO WILLIAMSBURG
$$
AMZ130-135-150-152-154-156-158-250-252-254-256-330-350-352-354-
202140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
ALBEMARLE SOUND
PAMLICO SOUND
COASTAL WATERS FROM CURRITUCK BEACH LIGHT TO OREGON INLET NC OUT
20 NM
COASTAL WATERS FROM OREGON INLET TO CAPE HATTERAS NC OUT 20 NM
COASTAL WATERS FROM CAPE HATTERAS TO OCRACOKE INLET NC OUT 20 NM
COASTAL WATERS FROM OCRACOKE INLET TO CAPE LOOKOUT NC OUT 20 NM
COASTAL WATERS FROM CAPE LOOKOUT TO SURF CITY NC OUT 20 NM
COASTAL WATERS FROM SURF CITY TO CAPE FEAR NC OUT 20 NM
COASTAL WATERS FROM CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20
NM
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
COASTAL WATERS FROM MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT
20 NM
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 (50%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
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 (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.