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 249
NWS Storm Prediction Center Norman OK
1255 PM EDT Thu Jun 4 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Ohio
Western Pennsylvania
Northern West Virginia Panhandle
* Effective this Thursday afternoon and evening from 1255 PM
until 800 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 65 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of strong to locally severe storms will likely
progress east-northeast across the Upper Ohio Valley region this
afternoon offering a risk for mainly damaging wind along with
isolated severe hail.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 45 miles west of
Zanesville OH to 30 miles north northeast of Latrobe 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
1.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25025.
...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 249 SEVERE TSTM OH PA WV 041655Z - 050000Z
AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
45W ZZV/ZANESVILLE OH/ - 30NNE LBE/LATROBE PA/
..AVIATION COORDS.. 50NM N/S /14SSW APE - 27NW JST/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..55 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25025.
LAT...LON 40748275 41487918 39887918 39158275
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 249 Status Report Messages:
STATUS REPORT #2 ON WW 249
VALID 042005Z - 042140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 819
..MOSIER..06/04/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 249
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC005-009-013-019-029-031-045-059-067-073-075-081-083-089-099-
105-111-115-117-119-121-127-139-151-157-163-167-169-042140-
OH
. OHIO COUNTIES INCLUDED ARE
ASHLAND ATHENS BELMONT
CARROLL COLUMBIANA COSHOCTON
FAIRFIELD GUERNSEY HARRISON
HOCKING HOLMES JEFFERSON
KNOX LICKING MAHONING
MEIGS MONROE MORGAN
MORROW MUSKINGUM NOBLE
PERRY RICHLAND STARK
TUSCARAWAS VINTON WASHINGTON
WAYNE
$$
PAC003-005-007-019-031-051-059-063-065-073-125-129-042140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BUTLER CLARION FAYETTE
GREENE INDIANA JEFFERSON
LAWRENCE WASHINGTON WESTMORELAND
$$
WVC009-029-051-069-042140-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
BROOKE HANCOCK MARSHALL
OHIO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 249
VALID 041830Z - 041940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..MOSIER..06/04/20
ATTN...WFO...CLE...RLX...PBZ...ILN...
&&
STATUS REPORT FOR WS 249
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC005-009-013-019-029-031-045-059-067-073-075-081-083-089-099-
105-111-115-117-119-121-127-139-151-157-163-167-169-041940-
OH
. OHIO COUNTIES INCLUDED ARE
ASHLAND ATHENS BELMONT
CARROLL COLUMBIANA COSHOCTON
FAIRFIELD GUERNSEY HARRISON
HOCKING HOLMES JEFFERSON
KNOX LICKING MAHONING
MEIGS MONROE MORGAN
MORROW MUSKINGUM NOBLE
PERRY RICHLAND STARK
TUSCARAWAS VINTON WASHINGTON
WAYNE
$$
PAC003-005-007-019-031-051-059-063-065-073-125-129-041940-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BUTLER CLARION FAYETTE
GREENE INDIANA JEFFERSON
LAWRENCE WASHINGTON WESTMORELAND
$$
WVC009-029-051-069-041940-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
BROOKE HANCOCK MARSHALL
OHIO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
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 (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% (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.
weather.gov 
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