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 480
NWS Storm Prediction Center Norman OK
735 PM EDT Tue Aug 31 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Extreme north-central North Carolina
Western and central Virginia
* Effective this Tuesday night and Wednesday morning from 735 PM
until 300 AM EDT.
* Primary threats include...
A couple tornadoes possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...One supercell formed and quickly became tornadic in the
Blacksburg area in the past hour, and overall tornado potential
should increase through the evening. The threat should spread
northeastward over the watch area, as additional thunderstorms
develop in a favorably unstable air mass and interact with a
warm-frontal zone, where low-level shear is maximized.
The tornado watch area is approximately along and 40 statute miles
either side of a line from 30 miles southwest of Roanoke VA to 40
miles east northeast of Charlottesville VA. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23025.
...Edwards
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 480
NWS Storm Prediction Center Norman OK
735 PM EDT Tue Aug 31 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Extreme north-central North Carolina
Western and central Virginia
* Effective this Tuesday night and Wednesday morning from 735 PM
until 300 AM EDT.
* Primary threats include...
A couple tornadoes possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...One supercell formed and quickly became tornadic in the
Blacksburg area in the past hour, and overall tornado potential
should increase through the evening. The threat should spread
northeastward over the watch area, as additional thunderstorms
develop in a favorably unstable air mass and interact with a
warm-frontal zone, where low-level shear is maximized.
The tornado watch area is approximately along and 40 statute miles
either side of a line from 30 miles southwest of Roanoke VA to 40
miles east northeast of Charlottesville VA. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23025.
...Edwards
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 480 TORNADO NC VA 312335Z - 010700Z
AXIS..40 STATUTE MILES EITHER SIDE OF LINE..
30SW ROA/ROANOKE VA/ - 40ENE CHO/CHARLOTTESVILLE VA/
..AVIATION COORDS.. 35NM EITHER SIDE /17ESE PSK - 18SSE CSN/
WIND GUSTS..60 KNOTS.
MAX TOPS TO 500.MEAN STORM MOTION VECTOR 23025.
LAT...LON 37538068 38877808 37837744 36498005
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 480 Status Report Messages:
STATUS REPORT #5 ON WW 480
VALID 010425Z - 010540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 NNW RIC
TO 15 NNE LYH TO 10 NW SSU.
..LEITMAN..09/01/21
ATTN...WFO...RNK...LWX...AKQ...
&&
STATUS REPORT FOR WT 480
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
VAC003-005-009-015-017-047-065-079-109-113-125-137-139-157-163-
165-171-177-530-540-580-660-678-790-820-010540-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE ALLEGHANY AMHERST
AUGUSTA BATH CULPEPER
FLUVANNA GREENE LOUISA
MADISON NELSON ORANGE
PAGE RAPPAHANNOCK ROCKBRIDGE
ROCKINGHAM SHENANDOAH SPOTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BUENA VISTA CHARLOTTESVILLE COVINGTON
HARRISONBURG LEXINGTON 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 #4 ON WW 480
VALID 010345Z - 010440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE LYH TO
25 SE BKW.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1665
..LEITMAN..09/01/21
ATTN...WFO...RNK...LWX...AKQ...
&&
STATUS REPORT FOR WT 480
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
VAC003-005-007-009-011-015-017-019-023-029-031-045-047-049-065-
075-079-109-113-125-137-139-145-147-157-161-163-165-171-177-530-
540-580-660-678-680-770-775-790-820-010440-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE ALLEGHANY AMELIA
AMHERST APPOMATTOX AUGUSTA
BATH BEDFORD BOTETOURT
BUCKINGHAM CAMPBELL CRAIG
CULPEPER CUMBERLAND FLUVANNA
GOOCHLAND GREENE LOUISA
MADISON NELSON ORANGE
PAGE POWHATAN PRINCE EDWARD
RAPPAHANNOCK ROANOKE ROCKBRIDGE
ROCKINGHAM SHENANDOAH SPOTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BUENA VISTA CHARLOTTESVILLE COVINGTON
HARRISONBURG LEXINGTON LYNCHBURG
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 #3 ON WW 480
VALID 010240Z - 010340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SE LYH TO
20 N PSK.
..LEITMAN..09/01/21
ATTN...WFO...RNK...LWX...AKQ...
&&
STATUS REPORT FOR WT 480
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
VAC003-005-007-009-011-015-017-019-023-029-031-045-047-049-065-
075-079-109-113-125-137-139-145-147-157-161-163-165-171-177-530-
540-580-660-678-680-770-775-790-820-010340-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE ALLEGHANY AMELIA
AMHERST APPOMATTOX AUGUSTA
BATH BEDFORD BOTETOURT
BUCKINGHAM CAMPBELL CRAIG
CULPEPER CUMBERLAND FLUVANNA
GOOCHLAND GREENE LOUISA
MADISON NELSON ORANGE
PAGE POWHATAN PRINCE EDWARD
RAPPAHANNOCK ROANOKE ROCKBRIDGE
ROCKINGHAM SHENANDOAH SPOTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BUENA VISTA CHARLOTTESVILLE COVINGTON
HARRISONBURG LEXINGTON LYNCHBURG
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 #2 ON WW 480
VALID 010140Z - 010240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEITMAN..09/01/21
ATTN...WFO...RNK...LWX...AKQ...
&&
STATUS REPORT FOR WT 480
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC033-157-169-010240-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
CASWELL ROCKINGHAM STOKES
$$
VAC003-005-007-009-011-015-017-019-023-029-031-035-037-045-047-
049-063-065-067-071-075-079-083-089-109-113-121-125-137-139-141-
143-145-147-155-157-161-163-165-171-177-530-540-580-590-640-660-
678-680-690-750-770-775-790-820-010240-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE ALLEGHANY AMELIA
AMHERST APPOMATTOX AUGUSTA
BATH BEDFORD BOTETOURT
BUCKINGHAM CAMPBELL CARROLL
CHARLOTTE CRAIG CULPEPER
CUMBERLAND FLOYD FLUVANNA
FRANKLIN GILES GOOCHLAND
GREENE HALIFAX HENRY
LOUISA MADISON MONTGOMERY
NELSON ORANGE PAGE
PATRICK PITTSYLVANIA POWHATAN
PRINCE EDWARD PULASKI RAPPAHANNOCK
ROANOKE ROCKBRIDGE ROCKINGHAM
SHENANDOAH SPOTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BUENA VISTA CHARLOTTESVILLE COVINGTON
DANVILLE GALAX HARRISONBURG
LEXINGTON LYNCHBURG MARTINSVILLE
RADFORD ROANOKE SALEM
STAUNTON WAYNESBORO
$$
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.
$$
STATUS REPORT #1 ON WW 480
VALID 010035Z - 010140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEITMAN..09/01/21
ATTN...WFO...RNK...LWX...AKQ...
&&
STATUS REPORT FOR WT 480
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NCC033-157-169-010140-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
CASWELL ROCKINGHAM STOKES
$$
VAC003-005-007-009-011-015-017-019-023-029-031-035-037-045-047-
049-063-065-067-071-075-079-083-089-109-113-121-125-137-139-141-
143-145-147-155-157-161-163-165-171-177-530-540-580-590-640-660-
678-680-690-750-770-775-790-820-010140-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE ALLEGHANY AMELIA
AMHERST APPOMATTOX AUGUSTA
BATH BEDFORD BOTETOURT
BUCKINGHAM CAMPBELL CARROLL
CHARLOTTE CRAIG CULPEPER
CUMBERLAND FLOYD FLUVANNA
FRANKLIN GILES GOOCHLAND
GREENE HALIFAX HENRY
LOUISA MADISON MONTGOMERY
NELSON ORANGE PAGE
PATRICK PITTSYLVANIA POWHATAN
PRINCE EDWARD PULASKI RAPPAHANNOCK
ROANOKE ROCKBRIDGE ROCKINGHAM
SHENANDOAH SPOTSYLVANIA
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BUENA VISTA CHARLOTTESVILLE COVINGTON
DANVILLE GALAX HARRISONBURG
LEXINGTON LYNCHBURG MARTINSVILLE
RADFORD ROANOKE SALEM
STAUNTON WAYNESBORO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Low (20%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Low (<5%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (30%)
|
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% (EF2-EF5 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.
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