A frontal boundary moved through northern Ohio during the early morning hours on June 13, allowing for some isolated thunderstorms to develop over the region. A decaying line of thunderstorms entered central Ohio and impacted the Mount Vernon area where a large tree fell onto a house and an adjacent vehicle.
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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 frontal boundary moved through northern Ohio during the early morning hours on June 13, allowing for some isolated thunderstorms to develop over the region. A decaying line of thunderstorms entered central Ohio and impacted the Mount Vernon area where a large tree fell onto a house and an adjacent vehicle.
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 Jun 12, 11:45 PM EST, 1 hour 5 minutes earlier.
Area Forecast Discussion National Weather Service Cleveland OH 1245 AM EDT Sat Jun 13 2020 .SYNOPSIS... A high pressure ridge should affect our region the rest of today through at least Monday of next week. Simultaneously, the embedded high pressure center should move from Manitoba to New England. && .NEAR TERM /THROUGH TODAY/... Scattered showers beginning to develop on schedule. No changes were made with this mid evening update. Upper shortwave/disturbance/jet energy will aid in the development and expansion of showers that will slip across the area/primarily focused along the US 224 and US 30 corridors. Previous discussion below still applies. Surface ridging continues building into our CWA through Saturday night as the embedded high pressure center moves from Manitoba to western Quebec. Aloft, a longwave trough persists over the Great Lakes region and Ohio Valley. One shortwave disturbance embedded in this longwave trough should move from near Lake Superior to the eastern Great Lakes region by daybreak Saturday, when a trailing shortwave disturbance should be located over Lower Michigan, northern Indiana, and vicinity. The first disturbance should move to Maine and vicinity by daybreak Sunday as the second disturbance moves toward the Mid-Atlantic states. These two shortwave disturbances are expected to be accompanied by isolated to scattered rain showers moving southeastward from about sunset this evening through late Saturday morning, with the best potential for showers southwest of the Lake County to Trumbull County corridor in Ohio. There may be enough instability for a stray thunderstorm or two to accompany these showers, but the thunderstorm potential is very low. Tonight's low temperatures should reach the mid 40's to mid 50's, with the warmest lows along the shore of approximately 66F Lake Erie. Saturday will be noticeably cooler, with afternoon highs reaching only the 60's. Saturday night should feature lows dipping into the 40's or lower 50's, with the warmest lows once again along the Lake Erie shore. A few rain showers may affect far-western portions of our CWA during the predawn hours of Sunday morning as another shortwave disturbance moves from Wisconsin toward the Mid Ohio Valley. However, at this point, rain chances are very low. && .SHORT TERM /TONIGHT THROUGH MONDAY NIGHT/... For the end of the weekend and beginning of next week, models have been inconsistent in handling the upper level trough along the East Coast. They are consistent with an amplifying ridge building into the center of the country and approaching the western Great Lakes region. Prior forecasts discussed the upper level trough shifting east of the area by Monday, however models are now suggesting the trough remaining over the eastern Great Lakes into late week. Beginning Sunday morning, a series of positive vorticity maximums move across the area, one of which does on Monday afternoon and tracks south of the area. Models have been consistent in this feature becoming a cutoff low, however the NAM and GFS now place this feature further north, just south of the CWA. This feature will continue to be monitored as it evolves for any further shifts. With the placement of this low pressure, cold air advection will result in cooler temperature for the end of the weekend and beginning of next week. Fair weather will result across much of the area, with cloudy conditions likely in the southeastern portion of the CWA associated with the low pressure. On Tuesday, the low pressure looks to shift further south, putting much of the area under a southeasterly flow and allowing warm air advection to creep into the area. Highs on Sunday and Monday will be in the low 70s and will be in the low 80s on Tuesday as that low pressure begins to shift. Low temperatures will be in the low to mid 50s. && .LONG TERM /TUESDAY THROUGH FRIDAY/... By Tuesday night, northern Ohio and NW Pennsylvania looks to be sitting right on the border between an upper level cutoff low pressure and high pressure. My midweek next week, models are not consistent very much with what will happen with this cutoff low to the south of the area. The GFS suggests an upper level trough begins to move south from Canada on Wednesday and absorbs this low. When this happens it then moves across the area for the end of the week, bringing or next chance of widespread precipitation. However, on the contrary, the ECMWF suggests that an upper level ridge amplifies over the area and pushes the low pressure further south before it is later absorbs by what appears to be a short wave trough Thursday afternoon. After this low pressure moves out, the overall pattern looks to try and become a more zonal flow by next weekend. As the low pressure shifts further south, the associated wind pattern shifts and allows strong warm air advection to set up across the area which will allow temperatures to again rise into the upper 80 and low 90s by the end of next week. Low temperatures will be in the mid 50s to low 60s. The area should remain precipitation free for most of this period until the end when the low pressure moves over the area, likely bringing showers at the end of next week, toward Thursday and Friday. Before that, the southeastern counties have the highest chance of showers due to their location on the periphery of the low pressure and the current uncertainty of location. Kept PoPs low due to the high uncertainty. && .AVIATION /06Z Saturday THROUGH Wednesday/... Short wave and upper trough over area has touched off convection in the area, mainly western and central OH. Convection was moving to the southeast. Expect several hours of showers with a few thunderstorms as well before activity shifts south and east. Saturday models have drier air moving in from the north. Expect primarily VFR conditions although brief IFR should be expected with convection. Outlook...Isolated non-VFR possible Monday through Wednesday. && .MARINE... Northwesterly flow will shift and become northeasterly by Saturday morning and will persist from this direction until Tuesday morning as high pressure will be dominant over the Great Lakes region during the period. Winds will generally remain near 10 knots through the period. Winds may approach 15 knots for a brief period Sunday afternoon in the western basin, but are not expected to persist. Not expecting winds or wave heights to support small craft criteria or other headlines during this period. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None. && SYNOPSIS...Jaszka NEAR TERM...Jaszka/Oudeman SHORT TERM...Campbell LONG TERM...Campbell AVIATION...TK MARINE...Campbell
Hazardous Weather Outlook National Weather Service Cleveland OH 530 AM EDT Fri Jun 12 2020 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-130930- 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- 530 AM EDT Fri Jun 12 2020 This Hazardous Weather Outlook is for central Lake Erie, eastern Lake Erie, western 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...Saturday through Thursday. 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
1108 PM EDT Fri Jun 12 2020
OHZ003-006>008-017-018-130415-
Seneca-Wood-Hancock-Ottawa-Sandusky-Lucas-
1108 PM EDT Fri Jun 12 2020
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT OTTAWA...SENECA...
SANDUSKY...WOOD...NORTHEASTERN HANCOCK AND WESTERN LUCAS COUNTIES...
At 1108 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Holland to near Perrysburg to near
Weston. Movement was southeast at 40 mph.
Winds in excess of 40 mph are possible with these storms.
LAT...LON 4158 8382 4173 8370 4130 8296 4102 8295
4099 8299 4100 8340 4140 8389
TIME...MOT...LOC 0308Z 312DEG 33KT 4163 8364 4149 8364 4141 8376Special Weather Statement National Weather Service Cleveland OH 1116 PM EDT Fri Jun 12 2020 OHZ003-007-130645- Lucas-Ottawa- Including the cities of Toledo and Port Clinton 1116 PM EDT Fri Jun 12 2020 ...Brief Lakeshore Flooding is expected from Toledo to Port Clinton... Northeast winds of 15 to 20 mph will bring water into the western basin of Lake Erie. Minor flooding will be possible from Port Clinton to Toledo. Water levels may peak around 75 inches above low water datum at Toledo and near 70 inches at Marblehead around 2 am. The water levels should then fall after 3 am below levels that can produce flooding.
Special Weather Statement National Weather Service Cleveland OH 1201 AM EDT Sat Jun 13 2020 OHZ027>029-036-037-130500- Crawford-Wyandot-Marion-Richland-Morrow- 1201 AM EDT Sat Jun 13 2020 ...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL RICHLAND... NORTHEASTERN MARION...NORTHEASTERN WYANDOT...NORTHEASTERN MORROW AND CRAWFORD COUNTIES... At 1201 AM EDT, a strong thunderstorm was located over New Riegel, or near Tiffin, moving southeast at 35 mph. Wind gusts up to 50 mph and small hail are possible with this storm. 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 4099 8338 4099 8284 4073 8256 4054 8281 TIME...MOT...LOC 0401Z 314DEG 32KT 4108 8327
Special Weather Statement
National Weather Service Cleveland OH
1218 AM EDT Sat Jun 13 2020
OHZ018-130445-
Seneca-
1218 AM EDT Sat Jun 13 2020
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN SENECA
COUNTY...
At 1218 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Tiffin to near Bloomville to near
Sycamore. Movement was southeast at 30 mph.
Wind gusts up to 45 mph are possible with these storms.
LAT...LON 4110 8320 4123 8324 4117 8284 4100 8283
4099 8328
TIME...MOT...LOC 0418Z 300DEG 28KT 4120 8315 4106 8309 4096 8322The Cleveland radar (KCLE), 125 km away, was scanning. The volume nearest the first event began at 05:49 UTC.
1 thunderstorm wind. Local standard time, as filed.
A large, but unhealthy, tree fell onto a house and adjacent vehicle in Mount Vernon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2020Every state in 2020This day in weather historyWarnings in Ohio, June 2020
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: 895768.