A line of showers and thunderstorms developed in advance of a front moving across the area. At least one segment of the line 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 line of showers and thunderstorms developed in advance of a front moving across the area. At least one segment of the line 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 Jul 11, 12:39 PM EST, 1 hour 58 minutes earlier.
Area Forecast Discussion National Weather Service Cleveland OH 139 PM EDT Tue Jul 11 2017 .SYNOPSIS... A cold front slipping south across the area will become nearly stationary today. The stationary front will lift back north as a warm front Wednesday as low pressure moves northeast into the western Great Lakes to New York state by Thursday. Another wave of low pressure will move east into the central Great Lakes by Thursday night and to Quebec by Friday night. A large area of high pressure will build southeast out of Canada by early next week into the local area. && .NEAR TERM /THROUGH WEDNESDAY/... No major changes to the forecast with the midday update. Isolated shower activity beginning to develop across the area per latest sat/radar imagery. Hi-res guidance continues to indicated widely scattered convection, however there may be a focus for some more organized/widespread activity along a northward racing outflow boundary, currently from Findlay southeast to Mt. Vernon. Any storms that develop may have a low end severe risk with them, with 2000-3000 j/kg SBCAPE, 1000-1100 j/kg DCAPE and around 20-30 kts of effective bulk shear supportive of damaging winds/microbursts. Convective activity should diminish quickly after 00Z, but may redevelop after 06Z as low level jet noses into the western part of the forecast along a lifting warm front. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY NIGHT/... Timing and coverage of precip remains a challenge as the models have differing ideas. The NAM is generally faster with the progression of the main features on Wednesday night and Thursday. The NAM tracks a low north of the area on Wednesday night with precip surging southeast across the area ahead of the trailing cold front. The GFS has a similar solution but is about 12 hours slower than the NAM bringing the main area of precip back into the area. The ECMWF has timing in between the two but is slightly further north with the surface low which slows the arrival of the precip and front down. Will trend toward the slower solutions and based on this have limited likely pops to the northern couple tiers of counties through daybreak Thursday. Likely pops all areas Thursday seems reasonable. Given the slower frontal movement have also had to bump chances up Thursday night and Friday. Yesterday it appeared most of Friday would be dry but that is no longer the case. Much of the area should see between an inch and a inch and a half of precip during the period. Have used a blend of guidance for temps. && .LONG TERM /SATURDAY THROUGH MONDAY/... Am going to try to start the weekend off dry but the models remain in flux so confidence remains lows. Right now the preferred solution is for weak ridging across the area on Saturday. The models are still hinting at weak front sagging south across the area late Saturday night and Sunday. The GFS is faster with this front than the ECMWF. Will bump up precip chances slightly for Sunday...especially in the east. It looks like high pressure will return for Monday and will again dry things out. Temperatures Saturday through Monday will be within a degree or two of normal values. && .AVIATION /18Z Tuesday THROUGH Sunday/... Isolated to scattered SHRA/TSRA expected across the region this afternoon. Coverage is expected to be scattered enough, and confidence too low to pinpoint organized storm activity, to preclude anything more than VCTS mention through 00Z. A brief MVFR ceiling may linger at the terminals through 21Z or so until better mixing/forcing from northward racing outflow helps lift/mix out the ceilings. VFR conditions expected this evening, with possible MVFR ceilings returning, along with scattered TSRA, as a warm front lifts north through the region after 06Z. Only confident enough in a VCTS mention overnight at KFDY. Winds will remain 10kts or less through the period. OUTLOOK...Non-VFR on and off through Friday morning in showers and thunderstorms. && .MARINE... Light...mainly southwest winds will continue today on the lake. Southwest flow is also expected on Wednesday and Wednesday night with speeds gradually increasing during those periods. Low pressure will pass close to Lake Erie on Thursday. Winds will vary depending on the exact track of the low but right now it appears mainly southwest flow is expected during the day with west to northwest flow developing behind a trailing cold front on Thursday night. West to northwest flow is then expected through the end of the period. Chances for small craft conditions from the gradient winds appear minimal during the period but repeated rounds of thunderstorms the next few days will lead to locally windy and rough conditions. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None. && SYNOPSIS...Lombardy NEAR TERM...Greenawalt SHORT TERM...Kubina LONG TERM...Kubina AVIATION...Greenawalt MARINE...Kubina
Hazardous Weather Outlook National Weather Service Cleveland OH 612 AM EDT Tue Jul 11 2017 LEZ061-142>149-162>169-OHZ003-006>014-017>019-089-PAZ001-002-121015- 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-Ashtabula Lakeshore-Northern Erie-Southern Erie- 612 AM EDT Tue Jul 11 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...Wednesday through Monday. There is a slight risk for severe thunderstorms on Wednesday. The main threat will be strong damaging wind gusts and large hail. Heavy rain is also possible Wednesday as the air mass becomes quite moist across the region. There is the possibility for more localized flooding; especially in poor drainage areas. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed Wednesday. OHZ020>023-027>033-036>038-047-PAZ003-121015- Medina-Summit-Portage-Trumbull-Wyandot-Crawford-Richland-Ashland- Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox- 612 AM EDT Tue Jul 11 2017 This Hazardous Weather Outlook is for north central Ohio, northeast Ohio, northwest Ohio and northwest Pennsylvania. .DAY ONE...Today and Tonight. A marginal risk for severe thunderstorms is expected today. The main threat will be damaging wind gusts. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. There is a marginal risk for severe thunderstorms Wednesday with the potential for damaging wind gusts. Heavy rain is also possible Wednesday as the air mass becomes quite moist across the region. There is the possibility for more localized flooding; especially in poor drainage areas. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Lombardy
Special Weather Statement
National Weather Service Cleveland OH
230 PM EDT TUE JUL 11 2017
OHZ018-027>029-036-037-047-111900-
Crawford-Seneca-Wyandot-Marion-Richland-Morrow-Knox-
230 PM EDT TUE JUL 11 2017
...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT RICHLAND...
SOUTHEASTERN SENECA...NORTHEASTERN MARION...NORTHEASTERN WYANDOT...
MORROW...CRAWFORD AND KNOX COUNTIES...
At 226 PM EDT, strong thunderstorms were clusters from near
Chatfield, to southeast of Mount Vernon near Martinsburg. moving
northeast at 20 mph.
Winds in excess of 30 mph and half inch hail are possible with
some of these storms and locally heavy rainfall.
Locations impacted include...
Mansfield, Mount Vernon, Bucyrus, Mount Gilead, Galion, Shelby,
Ontario, Lexington, Crestline, Fredericktown, Gambier, Cardington,
Bellville, Plymouth, Centerburg, Danville, New Washington, Sycamore,
Chesterville and Chatfield.
LAT...LON 4025 8248 4027 8248 4028 8271 4033 8275
4035 8275 4035 8277 4093 8321 4106 8284
4100 8282 4099 8263 4063 8234 4056 8234
4056 8228 4043 8218 4024 8220
TIME...MOT...LOC 1826Z 244DEG 16KT 4097 8297
ThompsonThe Cleveland radar (KCLE), 68 km away, was scanning. The volume nearest the first event began at 19:35 UTC.
3 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds downed several trees across the central and southern portions of Wooster.
Thunderstorm winds downed a few trees south of Dalton near State Route 94.
Thunderstorm winds downed a few trees in Orrville.
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, July 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: 714283, 714284, 714285.