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.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 283
NWS STORM PREDICTION CENTER NORMAN OK
840 PM EDT THU MAY 8 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN MARYLAND
NORTH CENTRAL NORTH CAROLINA
CENTRAL VIRGINIA
COASTAL WATERS
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 840 PM
UNTIL 300 AM 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 30 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH OF RICHMOND
VIRGINIA TO 55 MILES SOUTHWEST OF ROANOKE RAPIDS NORTH CAROLINA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).
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 280...WW 281...WW 282...
DISCUSSION...SEVERE THUNDERSTORMS EXPECTED TO CONTINUE SPREADING EWD
INTO WW THIS EVENING ALONG INCREASING LLJ. VERY IMPRESSIVE SHEAR
PROFILES ON EVENING SOUNDINGS AND AREA VWP/S WILL MAINTAIN THREATS
OF ISOLATED SUPERCELLS AS WELL AS SMALL BOWING SEGMENTS. POTENTIAL
FOR TORNADOES WILL ACCOMPANY THREATS OF LARGE HAIL AND DAMAGING
WINDS WITH THE STRONGER STORMS TONIGHT.
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
400. MEAN STORM MOTION VECTOR 24035.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 283 TORNADO MD NC VA CW 090040Z - 090700Z
AXIS..30 STATUTE MILES EAST AND WEST OF LINE..
60N RIC/RICHMOND VA/ - 55SW RZZ/ROANOKE RAPIDS NC/
..AVIATION COORDS.. 25NM E/W /31ESE CSN - 18E RDU/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 24035.
LAT...LON 38367676 35867787 35867894 38367786
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 283 Status Report Messages:
STATUS REPORT #5 ON WW 283
VALID 090640Z - 090740Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
PORTIONS OF WW 283 /AND PERHAPS EXTENDED WW 280 AND WW 282/ ARE
LIKELY TO BE REPLACED SOON. FOR ADDITIONAL INFORMATION
SEE MESOSCALE DISCUSSION 834
..GUYER..05/09/08
ATTN...WFO...LWX...RAH...AKQ...
&&
STATUS REPORT FOR WT 283
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MDC009-017-037-090740-
MD
. MARYLAND COUNTIES INCLUDED ARE
CALVERT CHARLES ST. MARYS
$$
NCC063-069-077-181-185-090740-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
DURHAM FRANKLIN GRANVILLE
VANCE WARREN
$$
VAC007-025-033-036-041-053-057-081-085-087-097-099-101-109-111-
117-127-135-149-159-177-179-183-193-570-595-630-670-730-760-
090740-
VA
. VIRGINIA COUNTIES INCLUDED ARE
AMELIA BRUNSWICK CAROLINE
CHARLES CITY CHESTERFIELD DINWIDDIE
ESSEX GREENSVILLE HANOVER
HENRICO KING AND QUEEN KING GEORGE
KING WILLIAM LOUISA LUNENBURG
MECKLENBURG NEW KENT NOTTOWAY
PRINCE GEORGE RICHMOND SPOTSYLVANIA
STAFFORD SUSSEX WESTMORELAND
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
COLONIAL HEIGHTS EMPORIA FREDERICKSBURG
HOPEWELL PETERSBURG RICHMOND
$$
ANZ533-534-535-536-537-090740-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA
$$
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.
$$
STATUS REPORT #4 ON WW 283
VALID 090430Z - 090540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 NNW AVC
TO 35 WNW RIC TO 35 ENE CHO.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 832.
..GRAMS..05/09/08
ATTN...WFO...LWX...RAH...AKQ...
&&
STATUS REPORT FOR WT 283
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MDC009-017-037-090540-
MD
. MARYLAND COUNTIES INCLUDED ARE
CALVERT CHARLES ST. MARYS
$$
NCC063-069-077-181-183-185-090540-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
DURHAM FRANKLIN GRANVILLE
VANCE WAKE WARREN
$$
VAC007-025-033-036-041-053-057-081-085-087-097-099-101-109-111-
117-127-135-149-159-177-179-183-193-570-595-630-670-730-760-
090540-
VA
. VIRGINIA COUNTIES INCLUDED ARE
AMELIA BRUNSWICK CAROLINE
CHARLES CITY CHESTERFIELD DINWIDDIE
ESSEX GREENSVILLE HANOVER
HENRICO KING AND QUEEN KING GEORGE
KING WILLIAM LOUISA LUNENBURG
MECKLENBURG NEW KENT NOTTOWAY
PRINCE GEORGE RICHMOND SPOTSYLVANIA
STAFFORD SUSSEX WESTMORELAND
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
COLONIAL HEIGHTS EMPORIA FREDERICKSBURG
HOPEWELL PETERSBURG RICHMOND
$$
ANZ533-534-535-536-537-090540-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 283
VALID 090335Z - 090440Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GRAMS..05/09/08
ATTN...WFO...LWX...RAH...AKQ...
&&
STATUS REPORT FOR WT 283
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MDC009-017-037-090440-
MD
. MARYLAND COUNTIES INCLUDED ARE
CALVERT CHARLES ST. MARYS
$$
NCC063-069-077-181-183-185-090440-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
DURHAM FRANKLIN GRANVILLE
VANCE WAKE WARREN
$$
VAC007-025-033-036-041-049-053-057-065-075-081-085-087-097-099-
101-109-111-117-127-135-145-147-149-159-177-179-183-193-570-595-
630-670-730-760-090440-
VA
. VIRGINIA COUNTIES INCLUDED ARE
AMELIA BRUNSWICK CAROLINE
CHARLES CITY CHESTERFIELD CUMBERLAND
DINWIDDIE ESSEX FLUVANNA
GOOCHLAND GREENSVILLE HANOVER
HENRICO KING AND QUEEN KING GEORGE
KING WILLIAM LOUISA LUNENBURG
MECKLENBURG NEW KENT NOTTOWAY
POWHATAN PRINCE EDWARD PRINCE GEORGE
RICHMOND SPOTSYLVANIA STAFFORD
SUSSEX WESTMORELAND
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
COLONIAL HEIGHTS EMPORIA FREDERICKSBURG
HOPEWELL PETERSBURG RICHMOND
$$
ANZ533-534-535-536-537-090440-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA
$$
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.
$$
STATUS REPORT #2 ON WW 283
VALID 090235Z - 090340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 831.
..GRAMS..05/09/08
ATTN...WFO...LWX...RAH...AKQ...
&&
STATUS REPORT FOR WT 283
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MDC009-017-037-090340-
MD
. MARYLAND COUNTIES INCLUDED ARE
CALVERT CHARLES ST. MARYS
$$
NCC063-069-077-105-181-183-185-090340-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
DURHAM FRANKLIN GRANVILLE
LEE VANCE WAKE
WARREN
$$
VAC007-025-033-036-041-049-053-057-065-075-081-085-087-097-099-
101-109-111-117-127-135-145-147-149-159-177-179-183-193-570-595-
630-670-730-760-090340-
VA
. VIRGINIA COUNTIES INCLUDED ARE
AMELIA BRUNSWICK CAROLINE
CHARLES CITY CHESTERFIELD CUMBERLAND
DINWIDDIE ESSEX FLUVANNA
GOOCHLAND GREENSVILLE HANOVER
HENRICO KING AND QUEEN KING GEORGE
KING WILLIAM LOUISA LUNENBURG
MECKLENBURG NEW KENT NOTTOWAY
POWHATAN PRINCE EDWARD PRINCE GEORGE
RICHMOND SPOTSYLVANIA STAFFORD
SUSSEX WESTMORELAND
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
COLONIAL HEIGHTS EMPORIA FREDERICKSBURG
HOPEWELL PETERSBURG RICHMOND
$$
ANZ533-534-535-536-537-090340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 283
VALID 090140Z - 090240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..EVANS..05/09/08
ATTN...WFO...LWX...RAH...AKQ...
&&
STATUS REPORT FOR WT 283
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MDC009-017-037-090240-
MD
. MARYLAND COUNTIES INCLUDED ARE
CALVERT CHARLES ST. MARYS
$$
NCC063-069-077-105-181-183-185-090240-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
DURHAM FRANKLIN GRANVILLE
LEE VANCE WAKE
WARREN
$$
VAC007-025-033-036-041-049-053-057-065-075-081-085-087-097-099-
101-109-111-117-127-135-145-147-149-159-177-179-183-193-570-595-
630-670-730-760-090240-
VA
. VIRGINIA COUNTIES INCLUDED ARE
AMELIA BRUNSWICK CAROLINE
CHARLES CITY CHESTERFIELD CUMBERLAND
DINWIDDIE ESSEX FLUVANNA
GOOCHLAND GREENSVILLE HANOVER
HENRICO KING AND QUEEN KING GEORGE
KING WILLIAM LOUISA LUNENBURG
MECKLENBURG NEW KENT NOTTOWAY
POWHATAN PRINCE EDWARD PRINCE GEORGE
RICHMOND SPOTSYLVANIA STAFFORD
SUSSEX WESTMORELAND
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
COLONIAL HEIGHTS EMPORIA FREDERICKSBURG
HOPEWELL PETERSBURG RICHMOND
$$
ANZ533-534-535-536-537-090240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA
$$
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
|
Mod (40%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
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 (50%)
|
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 (80%)
|
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.