A trough of low pressure moved across Ohio on July 24rd causing a broken line of showers and thunderstorms to develop. There were a couple reports of damage from the stronger thunderstorms.
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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 trough of low pressure moved across Ohio on July 24rd causing a broken line of showers and thunderstorms to develop. There were a couple reports of damage from the stronger thunderstorms.
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 23, 6:42 PM EST, 49 minutes earlier.
Area Forecast Discussion National Weather Service Cleveland OH 742 PM EDT Mon Jul 23 2018 .SYNOPSIS... An upper level trough over the region will maintain unsettled weather through Tuesday then shift east of the area by Wednesday night. A cold front will move east across the area on Thursday with a stronger upper level trough setting up over the Great Lakes region to end the week. && .NEAR TERM /THROUGH TUESDAY NIGHT/... Lake breeze boundary has been making the thunderstorms a bit interesting this evening as the storms interact with the boundary. Storms over the western portions of the forecast area are moving from east to west which brings concern for outflows traveling in the same direction and knocking trees down. Root structure typically stronger on the prevailing wind side of the trees. Activity should begin to wane with sunset as we lose day time heating. Some fog may develop from Cleveland to Knox County overnight where the rain fell. May need to include some fog in the next update so will monitor trends. Elsewhere, in the east, conditions should remain status quo overnight. Original Discussion... Lake breeze boundary and some differential heating under the upper level trough have been enough to generate some showers and isolated thunderstorms this afternoon. Outflow boundaries from this convection will likely drive additional showers/thunderstorms through the evening. Most of these will dissipate shortly after sunset. While a couple showers overnight and especially near sunrise are possible the coverage will be isolated at best. A similar scenario is expected for Tuesday afternoon for convective development. However by the evening a weak cold front will be approaching the area. This may help to keep showers and a few thunderstorms going into late Tuesday night. Slightly higher moisture levels tonight will keep lows a couple degrees warmer. Highs on Tuesday will be similar to today. Cold front will start to move across the area Tuesday night so the western half of the region should cool slightly. && .SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/... The pattern will remain unsettled through the middle part of the week as several weak systems will move through an upper level trough. On Wednesday a cold front will be exiting the eastern half of the forecast area. A few showers and thunderstorms are possible in the eastern half on Wednesday. Showers will end Wednesday night over the region. Another cold front will move across the region on Thursday with showers and a few thunderstorms possible again. A weak trough will move through the forecast area on Friday keeping scattered showers over the region. && .LONG TERM /FRIDAY THROUGH MONDAY/... Mean long wave trough persists across the east during this period with generally below normal temperatures. There could be a lingering shower early Friday night as high pressure gradually begins to build into the region. High pressure will move over the region on Saturday with 850 mb temperatures only about 10-12 C which will hold max temperatures in the 70s. Fair weather is expected. Late Sunday and Sunday night a short wave will begin to move toward the region from the central US. Showers and thunderstorms will likely spread into the region late Sunday night and persist through Monday as low pressure develops and moves into the Ohio Valley. && .AVIATION /00Z Tuesday THROUGH Saturday/... Thunderstorms continue to develop across the middle of the forecast area and some enhancement is taking place on the lake breeze boundary. The unusual nature of the storms is that they are moving east to west over the western half of the forecast area along the boundary. The thunderstorms will likely weaken considerably with sunset this evening. There is the potential for some fog from Cleveland south through Mansfield. So, will monitor those trends over the next few hours. Some areas of low clouds present in the same corridor. Expecting another round of afternoon showers and thunderstorms tomorrow so will mention VCTS again. Otherwise, VFR. OUTLOOK...Periods of non-VFR possible Monday night through Thursday. && .MARINE... A variable wind pattern is expected over the lakes for the next several days as a series of systems will move through the region. The wind direction will remain variable on Tuesday eventually becoming southwest as a cold front approaches the region Tuesday night. Winds will shift to the northwest on Wednesday as this cold front moves east of the lake. Winds will shift back to the southwest Wednesday night as another cold front approaches Lake Erie. As the front moves across the lake on Thursday winds will shift to the west to northwest. Wind speeds should remain fairly light through mid week with wind speeds approximately 10 knots or less. Wind speeds will increase to 10 to 20 knots late in the week behind the Thursday cold front. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None. && SYNOPSIS...Mullen NEAR TERM...Lombardy/Mullen SHORT TERM...Garnet LONG TERM...LaPlante AVIATION...Lombardy MARINE...Garnet
Hazardous Weather Outlook National Weather Service Cleveland OH 413 AM EDT Mon Jul 23 2018 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-240815- 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- 413 AM EDT Mon Jul 23 2018 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...Tuesday through Sunday. 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
451 PM EDT MON JUL 23 2018
OHZ009-010-020-232130-
Erie-Medina-Lorain-
451 PM EDT MON JUL 23 2018
...A STRONG THUNDERSTORM WILL AFFECT ERIE...WEST CENTRAL MEDINA AND
LORAIN COUNTIES...
At 450 PM EDT, a strong thunderstorm was located near Wellington, or
13 miles south of Elyria, moving north at 20 mph.
Winds in excess of 40 mph and half inch hail are possible with this
storm.
Locations impacted include...
Lorain, Elyria, Western Vermilion, Vermilion, Amherst, Grafton,
Wellington, Sheffield Lake, Oberlin, Sheffield, Lagrange, Penfield,
South Amherst, Pittsfield, Kipton and Birmingham.
LAT...LON 4113 8202 4109 8225 4127 8235 4128 8234
4128 8236 4142 8243 4151 8210
TIME...MOT...LOC 2050Z 164DEG 17KT 4119 8217
LaPlanteSpecial Weather Statement National Weather Service Cleveland OH 707 PM EDT MON JUL 23 2018 OHZ008-018-240000- Seneca-Sandusky- 707 PM EDT MON JUL 23 2018 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SENECA AND SOUTHEASTERN SANDUSKY COUNTIES... At 706 PM EDT, a strong thunderstorm was located near Bellevue, or 12 miles southeast of Fremont, moving west at 20 mph. Wind gusts up to 50 mph and pea size hail are possible with this storm. This storm could strengthen so be alert for rapidly changing conditions with the storm. Locations impacted include... Fremont, Bellevue, Clyde, Green Springs, Ballville and Flat Rock. LAT...LON 4136 8312 4132 8284 4122 8284 4121 8315 TIME...MOT...LOC 2306Z 095DEG 16KT 4126 8290 Lombardy
The Cleveland radar (KCLE), 21 km away, was scanning. The volume nearest the first event began at 00:31 UTC.
2 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds downed several trees and large limbs in the Brunswick and Hinckley areas. Some power lines were also reported down which caused some power outages.
Thunderstorm winds downed a couple trees and some power lines in Strongsville. A house along Deerfield Drive was damaged by a fallen tree. At least 3000 electric customers in Strongsville lost power during this event.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2018Every state in 2018This day in weather historyWarnings in Ohio, July 2018
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: 773128, 773129.