A cold front moved across northern Ohio on August 19th causing scattered showers and thunderstorms to develop. A couple of thunderstorms became severe.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CLE wrote it up.
A cold front moved across northern Ohio on August 19th causing scattered showers and thunderstorms to develop. A couple of thunderstorms became severe.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cleveland, OH wrote its last area forecast discussion before the first event at Aug 19, 12:43 PM EST, 32 minutes earlier.
Area Forecast Discussion National Weather Service Cleveland OH 143 PM EDT Sat Aug 19 2017 .SYNOPSIS... Weak low pressure associated with a disturbance aloft will drop across the lower Great Lakes and Ohio Valley today. High pressure will build across the Ohio Valley and eastern Great Lakes Sunday, then move east of the area on Monday. The next low will move northeast across the Great Lakes Tuesday and take a cold front across the local area Tuesday night. && .NEAR TERM /THROUGH SUNDAY/... Update...Expanded likely pops slightly in the south/southeast so formatters will get likely wording into the zone forecast. Previous discussion...Fairly sharp shortwave/upper trough to cross the area today. The surface reflection is rather weak though. Mid/high clouds already beginning to overspread the area before dawn. System will be working with limited moisture so expect shower/thunderstorm coverage to be scattered at best. Latest guidance brings the small cluster of storms from northern IN into northwest OH followed by a diurnal lull and then a flare up again along or just east of the I-71 corridor. Marginal instability with daytime heating and decent lapse rates with the trough could produce a few feisty storms but by the time that all comes together activity should be across eastern counties and it would not be much longer before it would be out of the county warning area. Overall this is a quick system and any one place has just a few hours for the threat for precipitation. Highs a little on either side of 80 degrees. Clearing and light/variable winds in the wake of today's disturbance for tonight. This may introduce a patchy fog for early Sunday morning. With high pressure building overhead, Sunday will be quiet with partly cloudy afternoon skies and seasonable temperatures. && .SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY NIGHT/... High pressure will drift across the region Sunday night with it east of the area on Monday. This will allow southerly winds to develop and begin the return flow of moisture. Warm advection and some weak convergence along a lake boundary may be enough to cause an isolated thunderstorm across inland NW PA and maybe over NW OH. For the most part expect to see some afternoon cumulus with highs in the mid to upper 80s. Thunderstorm chances will increase after midnight Monday night but the best chances arrive Tuesday afternoon into the evening as the cold front moves across the region. Thunderstorms will end from west to east overnight with the cold front passage. Cooler Tuesday with the added cloud cover and thunderstorms but highs will still reach the lower to mid 80s. A gradual decrease in humidity Tuesday night with lows in the lower to mid 60s. && .LONG TERM /WEDNESDAY THROUGH FRIDAY/... There could be some lingering showers across NE OH/NW PA into Wednesday afternoon. High pressure will begin to increase its influence at the surface Wednesday night into Thursday. However another upper level trough will be approaching. This trough will cross the area on Thursday but with low level moisture in question we will not place more than 20 percent POP's in the forecast. By Friday high pressure should take control of the area. Cooler temperatures area expected through the long term forecast with highs in the lower to mid 70s. Lows most locations will dip into the 50s. A few upper 40s may occur across inland NW PA by Friday night. && .AVIATION /18Z Saturday THROUGH Thursday/... Convergence increasing across inland nern OH along a developing surface trough. Satellite show cu field beginning to enhance and would anticipate showers and thunderstorm development within the next hour or two. Will carry VCTS at KCAK and KYNG through 21Z. May have to add an hour or so to that but will wait for development. Elsewhere am expecting primarily VFR conditions as drier air moves in behind the trough aloft which is moving through the region. OUTLOOK...Non-VFR possible in scattered showers/tstms on Tuesday. && .MARINE... A reinforcing surge of cooler air will move across the area this afternoon with an upper level trough. Westerly winds will persist through the day and may become strong enough to produce 2 to 4 foot waves from Willowick to Ripley. There is a possibility of waves building to 3 to 5 feet for a few hours mid afternoon into the evening. Later shifts will need to watch this potential as winds shift around to the northwest this afternoon. High pressure will then build across Lake Erie tonight into Sunday. This high will shift east of the region on Monday as the next area of low pressure moves into the Western Great Lakes by Tuesday. Southwesterly winds will increase ahead of a cold front on Tuesday. Winds will likely be the strongest in the wake of the cold front Tuesday night into Wednesday with strong cold advection anticipated. This should be enough to require small craft advisories. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None. && SYNOPSIS...Oudeman NEAR TERM...TK/Oudeman SHORT TERM...Mullen LONG TERM...Mullen AVIATION...TK MARINE...Mullen
Hazardous Weather Outlook National Weather Service Cleveland OH 446 AM EDT Sat Aug 19 2017 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-200900- Lake Erie open waters from Ripley to Buffalo NY- Lake Erie nearshore waters from Maumee Bay to Reno Beach OH- Lake Erie nearshore waters from Reno Beach to The Islands OH- Lake Erie nearshore waters from The Islands to Vermilion OH- Lake Erie nearshore waters from Vermilion to Avon Point OH- Lake Erie nearshore waters from Avon Point to Willowick OH- Lake Erie nearshore waters from Willowick to Geneva-on-the Lake OH- Lake Erie nearshore waters from Geneva-on-the-Lake to Conneaut OH- Lake Erie nearshore waters from Conneaut OH to Ripley NY- Lake Erie open waters from Maumee Bay to Reno Beach OH- Lake Erie open waters from Reno Beach to The Islands OH- Lake Erie open waters from The Islands to Vermilion OH- Lake Erie open waters from Vermilion to Avon Point OH- Lake Erie open waters from Avon Point to Willowick OH- Lake Erie open waters from Willowick to Geneva-on-the-Lake OH- Lake Erie open waters from Geneva-on-the-Lake to Conneaut OH- Lake Erie open waters from Conneaut OH to Ripley NY-Lucas-Wood- Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland- Hancock-Seneca-Huron-Medina-Summit-Portage-Trumbull-Wyandot-Crawford- Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox- Ashtabula Lakeshore-Northern Erie-Southern Erie- 446 AM EDT Sat Aug 19 2017 This Hazardous Weather Outlook is for Lake Erie, north central Ohio, northeast Ohio, northwest Ohio and northwest Pennsylvania. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement
National Weather Service Cleveland OH
152 PM EDT SAT AUG 19 2017
OHZ029-030-037-047-191845-
Richland-Ashland-Morrow-Knox-
152 PM EDT SAT AUG 19 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN RICHLAND...SOUTH
CENTRAL ASHLAND...EAST CENTRAL MORROW AND NORTHERN KNOX COUNTIES...
At 151 PM EDT, a strong thunderstorm was located near Chesterville,
or 10 miles east of Mount Gilead, moving east at 20 mph.
Winds in excess of 40 mph and dime size hail are possible with this
storm.
Locations impacted include...
Loudonville, Fredericktown, Bellville, Danville, Chesterville,
Waterford, Butler, Perrysville, Gann, North Liberty and Shauck.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4045 8272 4063 8271 4067 8222 4057 8222
4057 8218 4039 8219
TIME...MOT...LOC 1751Z 272DEG 19KT 4054 8264
SefcovicSpecial Weather Statement
National Weather Service Cleveland OH
159 PM EDT SAT AUG 19 2017
OHZ032-191845-
Stark-
159 PM EDT SAT AUG 19 2017
...A STRONG THUNDERSTORM WILL AFFECT STARK COUNTY...
At 158 PM EDT, a strong thunderstorm was located over Louisville, or
near Canton, moving east at 25 mph.
Wind gusts up to 50 mph and dime size hail are possible with this
storm.
Locations impacted include...
Canton, Massillon, Alliance, North Canton, Louisville, Minerva,
Brewster, Navarre, Waynesburg, East Sparta, Wilmot, East Canton,
Beach City, Bolivar, Meyers Lake, Hills And Dales, Robertsville,
Maximo and Perry Heights.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4077 8165 4090 8143 4091 8109 4073 8109
4072 8124 4065 8124 4065 8144 4066 8144
4065 8147 4064 8165
TIME...MOT...LOC 1758Z 277DEG 21KT 4082 8131
SefcovicThe Cleveland radar (KCLE), 118 km away, was scanning. The volume nearest the first event began at 18:16 UTC.
4 hail, 1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds downed a few trees and some power lines along Montgomery Road east of Fredericktown.
Hail the size of quarters was observed.
Penny to nickel sized hail was reported.
Hail the size of quarters was observed.
Hail the size of quarters was observed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2017Every state in 2017This day in weather historyWarnings in Ohio, August 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 719042, 719044, 719040, 719041, 719043.