Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 280
NWS STORM PREDICTION CENTER NORMAN OK
650 PM EDT THU MAY 8 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHWESTERN NORTH CAROLINA
WESTERN VIRGINIA
WEST VIRGINIA PANHANDLE
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 650 PM
UNTIL 100 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF STAUNTON
VIRGINIA TO 60 MILES WEST OF GREENSBORO NORTH CAROLINA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).
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 278...WW 279...
DISCUSSION...BROKEN LINE OF STORMS WILL CONTINUE TO INCREASE IN
COVERAGE AND INTENSITY AS DEEP ASCENT AHEAD OF APPROACHING UPPER
SYSTEM SPREADS INTO GREATER INSTABILITY EAST OF THE APPALACHIANS.
WITH INCREASING SSWLY LLJ THIS EVENING...SHEAR PARAMETERS WILL
BECOME MORE FAVORABLE FOR SUPERCELLS AND POSSIBLY ISOLATED
TORNADOES. OTHERWISE...THREATS OF DAMAGING WINDS AND ISOLATED LARGE
HAIL WILL ACCOMPANY STRONGER CORES THIS EVENING.
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.
SAW0
WW 280 TORNADO NC VA WV 082250Z - 090500Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
35N SHD/STAUNTON VA/ - 60W GSO/GREENSBORO NC/
..AVIATION COORDS.. 60NM E/W /49W CSN - 50W GSO/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 24035.
LAT...LON 38777759 36097975 36098226 38778019
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 280 Status Report Messages:
STATUS REPORT #5 ON WW 280
VALID 090430Z - 090500Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W GSO TO
25 NNW GSO TO 25 SSE LYH.
WW 280 IS SCHEDULED TO EXPIRE AT 090500Z.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 832.
..GRAMS..05/09/08
ATTN...WFO...RNK...LWX...
&&
STATUS REPORT FOR WT 280
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC033-157-169-090500-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
CASWELL ROCKINGHAM STOKES
$$
VAC037-083-143-590-090500-
VA
. VIRGINIA COUNTIES INCLUDED ARE
CHARLOTTE HALIFAX PITTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
DANVILLE
$$
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.
$$
STATUS REPORT #4 ON WW 280
VALID 090330Z - 090440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W GSO TO
25 NNW DAN TO 40 S MRB.
..GRAMS..05/09/08
ATTN...WFO...RNK...LWX...
&&
STATUS REPORT FOR WT 280
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC033-157-090440-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
CASWELL ROCKINGHAM
$$
VAC011-029-031-037-047-083-137-143-590-090440-
VA
. VIRGINIA COUNTIES INCLUDED ARE
APPOMATTOX BUCKINGHAM CAMPBELL
CHARLOTTE CULPEPER HALIFAX
ORANGE PITTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
DANVILLE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 280
VALID 090230Z - 090340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 ENE HKY
TO 20 NW LYH TO 40 NNE SHD.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 831.
..GRAMS..05/09/08
ATTN...WFO...RNK...LWX...
&&
STATUS REPORT FOR WT 280
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC033-157-169-197-090340-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
CASWELL ROCKINGHAM STOKES
YADKIN
$$
VAC003-009-011-015-019-029-031-037-047-067-079-083-089-113-125-
137-139-141-143-157-165-187-515-540-590-660-680-690-790-820-
090340-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE AMHERST APPOMATTOX
AUGUSTA BEDFORD BUCKINGHAM
CAMPBELL CHARLOTTE CULPEPER
FRANKLIN GREENE HALIFAX
HENRY MADISON NELSON
ORANGE PAGE PATRICK
PITTSYLVANIA RAPPAHANNOCK ROCKINGHAM
WARREN
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BEDFORD CHARLOTTESVILLE DANVILLE
HARRISONBURG LYNCHBURG MARTINSVILLE
STAUNTON WAYNESBORO
$$
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.
$$
STATUS REPORT #2 ON WW 280
VALID 090140Z - 090240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNE HKY
TO 25 SSW ROA TO 30 NE ROA TO 35 W SHD TO 35 SW MRB.
..EVANS..05/09/08
ATTN...WFO...RNK...LWX...
&&
STATUS REPORT FOR WT 280
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC033-157-169-171-197-090240-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
CASWELL ROCKINGHAM STOKES
SURRY YADKIN
$$
VAC003-009-011-015-019-023-029-031-037-047-063-067-079-083-089-
113-125-137-139-141-143-157-161-163-165-171-187-515-530-540-590-
660-678-680-690-770-775-790-820-090240-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE AMHERST APPOMATTOX
AUGUSTA BEDFORD BOTETOURT
BUCKINGHAM CAMPBELL CHARLOTTE
CULPEPER FLOYD FRANKLIN
GREENE HALIFAX HENRY
MADISON NELSON ORANGE
PAGE PATRICK PITTSYLVANIA
RAPPAHANNOCK ROANOKE ROCKBRIDGE
ROCKINGHAM SHENANDOAH WARREN
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BEDFORD BUENA VISTA CHARLOTTESVILLE
DANVILLE HARRISONBURG LEXINGTON
LYNCHBURG MARTINSVILLE ROANOKE
SALEM STAUNTON WAYNESBORO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 280
VALID 090030Z - 090140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..05/09/08
ATTN...WFO...RNK...LWX...
&&
STATUS REPORT FOR WT 280
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC005-009-033-157-169-171-189-193-197-090140-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ALLEGHANY ASHE CASWELL
ROCKINGHAM STOKES SURRY
WATAUGA WILKES YADKIN
$$
VAC003-005-009-011-015-017-019-021-023-029-031-035-037-045-047-
063-067-071-077-079-083-089-091-113-121-125-137-139-141-143-155-
157-161-163-165-171-173-185-187-197-515-530-540-580-590-640-660-
678-680-690-750-770-775-790-820-090140-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE ALLEGHANY AMHERST
APPOMATTOX AUGUSTA BATH
BEDFORD BLAND BOTETOURT
BUCKINGHAM CAMPBELL CARROLL
CHARLOTTE CRAIG CULPEPER
FLOYD FRANKLIN GILES
GRAYSON GREENE HALIFAX
HENRY HIGHLAND MADISON
MONTGOMERY NELSON ORANGE
PAGE PATRICK PITTSYLVANIA
PULASKI RAPPAHANNOCK ROANOKE
ROCKBRIDGE ROCKINGHAM SHENANDOAH
SMYTH TAZEWELL WARREN
WYTHE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BEDFORD BUENA VISTA CHARLOTTESVILLE
COVINGTON DANVILLE GALAX
HARRISONBURG LEXINGTON LYNCHBURG
MARTINSVILLE RADFORD ROANOKE
SALEM STAUNTON WAYNESBORO
$$
WVC023-025-031-055-063-071-089-090140-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
GRANT GREENBRIER HARDY
MERCER MONROE PENDLETON
SUMMERS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (40%)
|
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
|
Low (10%)
|
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.