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.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 421
NWS STORM PREDICTION CENTER NORMAN OK
325 PM EDT MON JUN 15 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PARTS OF EASTERN NORTH CAROLINA
MUCH OF EASTERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 325 PM UNTIL
1100 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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF
SOUTHERN PINES NORTH CAROLINA TO 30 MILES SOUTH SOUTHWEST OF
CHARLESTON SOUTH CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
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 419...WW 420...
DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY
ACROSS THE WATCH AREA WITHIN A MDTLY UNSTABLE AND SHEARED AIR MASS.
PRIMARY THREAT WILL BE PULSE SEVERE WITH A FEW CLUSTERS ENHANCING
WIND DAMAGE POTENTIAL.
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 550. MEAN STORM
MOTION VECTOR 33015.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 421 SEVERE TSTM NC SC CW 151925Z - 160300Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
50NE SOP/SOUTHERN PINES NC/ - 30SSW CHS/CHARLESTON SC/
..AVIATION COORDS.. 60NM E/W /9S RDU - 25SSW CHS/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 33015.
LAT...LON 35727750 32497902 32498143 35728000
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 421 Status Report Messages:
STATUS REPORT #6 ON WW 421
VALID 160225Z - 160300Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE CRE TO
20 WSW OGB TO 50 WNW FLO TO 35 NE FLO TO 30 E CRE.
WW 421 IS SCHEDULED TO EXPIRE AT 160300Z.
..GRAMS..06/16/09
ATTN...WFO...RAH...ILM...CHS...CAE...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SCC015-017-027-031-041-043-051-061-067-075-085-089-160300-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BERKELEY CALHOUN CLARENDON
DARLINGTON FLORENCE GEORGETOWN
HORRY LEE MARION
ORANGEBURG SUMTER WILLIAMSBURG
$$
AMZ254-160300-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
$$
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.
$$
STATUS REPORT #5 ON WW 421
VALID 160145Z - 160240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SE CRE TO
35 NNE CHS TO 30 SW OGB TO 45 NE CAE TO 20 WSW OAJ.
..GRAMS..06/16/09
ATTN...WFO...RAH...ILM...CHS...CAE...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC047-160240-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
COLUMBUS
$$
SCC015-017-027-031-033-041-043-051-061-067-075-085-089-160240-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BERKELEY CALHOUN CLARENDON
DARLINGTON DILLON FLORENCE
GEORGETOWN HORRY LEE
MARION ORANGEBURG SUMTER
WILLIAMSBURG
$$
AMZ254-160240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
$$
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.
$$
STATUS REPORT #4 ON WW 421
VALID 152335Z - 160040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSE CRE
TO 40 NE CHS TO 35 WNW CHS TO 30 NW SAV.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1144.
..GRAMS..06/15/09
ATTN...WFO...RAH...ILM...CHS...CAE...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC007-017-047-051-085-093-125-153-155-163-165-160040-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ANSON BLADEN COLUMBUS
CUMBERLAND HARNETT HOKE
MOORE RICHMOND ROBESON
SAMPSON SCOTLAND
$$
SCC015-017-025-027-031-033-039-041-043-051-055-057-061-063-067-
069-075-079-085-089-160040-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BERKELEY CALHOUN CHESTERFIELD
CLARENDON DARLINGTON DILLON
FAIRFIELD FLORENCE GEORGETOWN
HORRY KERSHAW LANCASTER
LEE LEXINGTON MARION
MARLBORO ORANGEBURG RICHLAND
SUMTER WILLIAMSBURG
$$
AMZ254-160040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
$$
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.
$$
STATUS REPORT #3 ON WW 421
VALID 152250Z - 152340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSE CRE
TO 35 NE CHS TO 30 WNW CHS TO 25 NNW SAV.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1114.
..GRAMS..06/15/09
ATTN...WFO...RAH...ILM...CHS...CAE...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC007-017-047-051-085-093-125-153-155-163-165-152340-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ANSON BLADEN COLUMBUS
CUMBERLAND HARNETT HOKE
MOORE RICHMOND ROBESON
SAMPSON SCOTLAND
$$
SCC015-017-025-027-031-033-039-041-043-051-055-057-061-063-067-
069-075-079-085-089-152340-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BERKELEY CALHOUN CHESTERFIELD
CLARENDON DARLINGTON DILLON
FAIRFIELD FLORENCE GEORGETOWN
HORRY KERSHAW LANCASTER
LEE LEXINGTON MARION
MARLBORO ORANGEBURG RICHLAND
SUMTER WILLIAMSBURG
$$
AMZ254-152340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
$$
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.
$$
STATUS REPORT #2 ON WW 421
VALID 152130Z - 152240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GRAMS..06/15/09
ATTN...WFO...RAH...ILM...CHS...CAE...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC007-017-037-047-051-085-093-101-105-125-153-155-163-165-183-
191-195-152240-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ANSON BLADEN CHATHAM
COLUMBUS CUMBERLAND HARNETT
HOKE JOHNSTON LEE
MOORE RICHMOND ROBESON
SAMPSON SCOTLAND WAKE
WAYNE WILSON
$$
SCC015-017-019-025-027-029-031-033-035-039-041-043-051-055-057-
061-063-067-069-075-079-085-089-152240-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BERKELEY CALHOUN CHARLESTON
CHESTERFIELD CLARENDON COLLETON
DARLINGTON DILLON DORCHESTER
FAIRFIELD FLORENCE GEORGETOWN
HORRY KERSHAW LANCASTER
LEE LEXINGTON MARION
MARLBORO ORANGEBURG RICHLAND
SUMTER WILLIAMSBURG
$$
AMZ254-256-330-350-152240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
COASTAL WATERS FROM MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT
20 NM
CHARLESTON HARBOR
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20
NM
$$
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.
$$
STATUS REPORT #1 ON WW 421
VALID 152050Z - 152140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SPC..06/15/09
ATTN...WFO...RAH...ILM...CHS...CAE...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC007-017-037-047-051-085-093-101-105-125-153-155-163-165-183-
191-195-152140-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ANSON BLADEN CHATHAM
COLUMBUS CUMBERLAND HARNETT
HOKE JOHNSTON LEE
MOORE RICHMOND ROBESON
SAMPSON SCOTLAND WAKE
WAYNE WILSON
$$
SCC015-017-019-025-027-029-031-033-035-039-041-043-051-055-057-
061-063-067-069-075-079-085-089-152140-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
BERKELEY CALHOUN CHARLESTON
CHESTERFIELD CLARENDON COLLETON
DARLINGTON DILLON DORCHESTER
FAIRFIELD FLORENCE GEORGETOWN
HORRY KERSHAW LANCASTER
LEE LEXINGTON MARION
MARLBORO ORANGEBURG RICHLAND
SUMTER WILLIAMSBURG
$$
AMZ254-256-330-350-152140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM
COASTAL WATERS FROM MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT
20 NM
CHARLESTON HARBOR
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20
NM
$$
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 (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
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.