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 509
NWS Storm Prediction Center Norman OK
1155 AM EST Sun Nov 15 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central to eastern Ohio
Western Pennsylvania
Northern West Virginia Panhandle
Lake Erie
* Effective this Sunday morning and afternoon from 1155 AM until
400 PM EST.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
SUMMARY...Broken band of low-topped thunderstorms should sweep
east-northeast across Ohio into western Pennsylvania this afternoon
with a continued risk of strong to severe wind gusts.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 40 miles northwest of
Zanesville OH to 5 miles northeast of Franklin PA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
0.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 300. Mean storm motion vector
25050.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 509 SEVERE TSTM OH PA WV LE 151655Z - 152100Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
40NW ZZV/ZANESVILLE OH/ - 5NE FKL/FRANKLIN PA/
..AVIATION COORDS.. 50NM N/S /14NNE APE - 41NNE EWC/
HAIL SURFACE AND ALOFT..0.5 INCH. WIND GUSTS..65 KNOTS.
MAX TOPS TO 300. MEAN STORM MOTION VECTOR 25050.
LAT...LON 41238244 42307980 40567980 39498244
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 509 Status Report Messages:
STATUS REPORT #6 ON WW 509
VALID 152010Z - 152100Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE PIT
TO 25 N FKL.
WW 509 WILL BE ALLOWED TO EXPIRE AT 152100Z IF NOT CANCELLED
BEFOREHAND.
..SMITH..11/15/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
PAC019-039-049-121-152100-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BUTLER CRAWFORD ERIE
VENANGO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 509
VALID 151930Z - 152010Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 NNE HLG TO
5 W ERI.
..SMITH..11/15/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
PAC007-019-039-049-073-085-121-152010-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BEAVER BUTLER CRAWFORD
ERIE LAWRENCE MERCER
VENANGO
$$
WVC029-152010-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
HANCOCK
$$
LEZ149-169-152010-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CONNEAUT OH TO RIPLEY NY
CONNEAUT OH TO RIPLEY NY BEYOND 5 NM OFF SHORELINE TO US-CANADIAN
BORDER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 509
VALID 151900Z - 151940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WSW HLG
TO 35 WSW ERI.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1799
..SMITH..11/15/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC007-019-029-067-081-099-155-151940-
OH
. OHIO COUNTIES INCLUDED ARE
ASHTABULA CARROLL COLUMBIANA
HARRISON JEFFERSON MAHONING
TRUMBULL
$$
PAC007-019-039-049-073-085-121-151940-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BEAVER BUTLER CRAWFORD
ERIE LAWRENCE MERCER
VENANGO
$$
WVC029-151940-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
HANCOCK
$$
LEZ148-149-168-169-151940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
GENEVA-ON-THE-LAKE TO CONNEAUT OH
CONNEAUT OH TO RIPLEY NY
GENEVA-ON-THE-LAKE TO CONNEAUT OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
CONNEAUT OH TO RIPLEY NY BEYOND 5 NM OFF SHORELINE TO US-CANADIAN
BORDER
$$
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.
$$
STATUS REPORT #3 ON WW 509
VALID 151825Z - 151900Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 N UNI TO
30 SW CAK TO 25 NE CLE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1799
..SMITH..11/15/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC007-009-019-029-031-055-059-067-081-085-099-115-119-127-133-
151-153-155-157-151900-
OH
. OHIO COUNTIES INCLUDED ARE
ASHTABULA ATHENS CARROLL
COLUMBIANA COSHOCTON GEAUGA
GUERNSEY HARRISON JEFFERSON
LAKE MAHONING MORGAN
MUSKINGUM PERRY PORTAGE
STARK SUMMIT TRUMBULL
TUSCARAWAS
$$
PAC007-019-039-049-073-085-121-151900-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BEAVER BUTLER CRAWFORD
ERIE LAWRENCE MERCER
VENANGO
$$
WVC029-151900-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
HANCOCK
$$
LEZ147-148-149-167-168-169-151900-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
WILLOWICK TO GENEVA-ON-THE LAKE OH
GENEVA-ON-THE-LAKE TO CONNEAUT OH
CONNEAUT OH TO RIPLEY NY
WILLOWICK TO GENEVA-ON-THE-LAKE OH BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
GENEVA-ON-THE-LAKE TO CONNEAUT OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
CONNEAUT OH TO RIPLEY NY BEYOND 5 NM OFF SHORELINE TO US-CANADIAN
BORDER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 509
VALID 151750Z - 151815Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ENE CMH
TO 15 WSW CLE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1799
..SMITH..11/15/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC005-007-009-019-029-031-035-045-055-059-067-073-075-081-083-
085-089-093-099-103-115-119-127-133-151-153-155-157-169-
151815-
OH
. OHIO COUNTIES INCLUDED ARE
ASHLAND ASHTABULA ATHENS
CARROLL COLUMBIANA COSHOCTON
CUYAHOGA FAIRFIELD GEAUGA
GUERNSEY HARRISON HOCKING
HOLMES JEFFERSON KNOX
LAKE LICKING LORAIN
MAHONING MEDINA MORGAN
MUSKINGUM PERRY PORTAGE
STARK SUMMIT TRUMBULL
TUSCARAWAS WAYNE
$$
PAC007-019-039-049-073-085-121-151815-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BEAVER BUTLER CRAWFORD
ERIE LAWRENCE MERCER
VENANGO
$$
WVC029-151815-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
HANCOCK
$$
LEZ145-146-147-148-149-165-166-167-168-169-151815-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
VERMILION TO AVON POINT OH
AVON POINT TO WILLOWICK OH
WILLOWICK TO GENEVA-ON-THE LAKE OH
GENEVA-ON-THE-LAKE TO CONNEAUT OH
CONNEAUT OH TO RIPLEY NY
VERMILION TO AVON POINT OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
AVON POINT TO WILLOWICK OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
WILLOWICK TO GENEVA-ON-THE-LAKE OH BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
GENEVA-ON-THE-LAKE TO CONNEAUT OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
CONNEAUT OH TO RIPLEY NY BEYOND 5 NM OFF SHORELINE TO US-CANADIAN
BORDER
$$
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.
$$
STATUS REPORT #1 ON WW 509
VALID 151700Z - 151800Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1798
..SMITH..11/15/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC005-007-009-019-029-031-035-045-055-059-067-073-075-081-083-
085-089-093-099-103-115-119-127-133-139-151-153-155-157-169-
151800-
OH
. OHIO COUNTIES INCLUDED ARE
ASHLAND ASHTABULA ATHENS
CARROLL COLUMBIANA COSHOCTON
CUYAHOGA FAIRFIELD GEAUGA
GUERNSEY HARRISON HOCKING
HOLMES JEFFERSON KNOX
LAKE LICKING LORAIN
MAHONING MEDINA MORGAN
MUSKINGUM PERRY PORTAGE
RICHLAND STARK SUMMIT
TRUMBULL TUSCARAWAS WAYNE
$$
PAC007-019-039-049-073-085-121-151800-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BEAVER BUTLER CRAWFORD
ERIE LAWRENCE MERCER
VENANGO
$$
WVC029-151800-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
HANCOCK
$$
LEZ145-146-147-148-149-165-166-167-168-169-151800-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
VERMILION TO AVON POINT OH
AVON POINT TO WILLOWICK OH
WILLOWICK TO GENEVA-ON-THE LAKE OH
GENEVA-ON-THE-LAKE TO CONNEAUT OH
CONNEAUT OH TO RIPLEY NY
VERMILION TO AVON POINT OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
AVON POINT TO WILLOWICK OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
WILLOWICK TO GENEVA-ON-THE-LAKE OH BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
GENEVA-ON-THE-LAKE TO CONNEAUT OH BEYOND 5 NM OFF SHORELINE TO
US-CANADIAN BORDER
CONNEAUT OH TO RIPLEY NY BEYOND 5 NM OFF SHORELINE TO US-CANADIAN
BORDER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
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
|
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 (60%)
|
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.