Scattered thunderstorms developed across northern Ohio during the afternoon through the late evening hours. A weak frontal boundary was slowly moving through the area and upper level lift was provided by a mid level shortwave perturbation.
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.
Scattered thunderstorms developed across northern Ohio during the afternoon through the late evening hours. A weak frontal boundary was slowly moving through the area and upper level lift was provided by a mid level shortwave perturbation. Clusters of organized severe thunderstorms produce quite a bit of wind damage.
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 6, 9:14 AM EST, 1 hour 9 minutes earlier.
Area Forecast Discussion National Weather Service Cleveland OH 1014 AM EDT Tue Aug 6 2019 .SYNOPSIS... A slow moving trough will move east across the region through Wednesday. Another trough will swing across the area on Thursday with a cold front settling south Thursday night. High pressure will build over the region on Friday and remain through the weekend. && .NEAR TERM /THROUGH WEDNESDAY/... There will be two main areas where convective initiation will be focused: along the outflow boundary that was generated by last night's MCS and the lake breeze front, will be generated over the next few hours. Streamlines show an area of confluence extending from northeast Indiana to southern Ontario. This is likely where outflow boundary is, and we can already start to see some thunderstorm develop on radar in Henry and Putnam counties and further cumulus development out ahead in Wood and Hancock counties. NAM Nest has this development occurring but to a greater extent than what is currently ongoing. Other CAMs have additional development this afternoon along and south of the lakeshore with the lake breeze front. The highest chance for thunderstorms with this forcing will be areas areas near Sandusky. Ahead of these areas of forcing, mostly clear skies are allowing the sun to build up the instability, with low level lapse rates expected to be around 8 to 8.5 C/km and MLCAPE up to 1000 to 1500 J/kg. However, there isn't much wind shear to work with, keeping thunderstorm type to primarily multicellular. Locally strong downburst winds from thunderstorms will be the primary factor to watch for today. PWAT will be around 1.5 to 1.6 inches and DCAPE around 700 to 900, both of which are only marginally favorable for severe downburst winds. Later in the afternoon, after thunderstorm coverage increases, multiple interacting boundaries may increase the threat for flooding but only if we get thunderstorms that train over the same area. PWAT won't be especially high but storm motion is relatively low with 850-300mb mean wind only around 20 knots. Previous discussion... Regional radars show a decaying MCS moving south across Illinois while a few showers and considerable cloud cover remain over lower Michigan. This activity is ongoing ahead of a shortwave trough moving through the flow aloft and broad trough at the surface extending from Hudson Bay. As this shortwave continues east today, re-development is expected to occur. A few showers can already be seen developing across Northwest Ohio and are expected to expand in the vicinity of the Lake Breeze across Northeast Ohio into Northwest Pennsylvania. Some sun is expected before the cirrus shield thickens allowing ML CAPE values of 1000-1500 J/kg to develop. Deeper moisture and better forcing will arrive from the west by mid- afternoon bringing an expansion of showers and thunderstorms continuing into tonight. Coverage of showers and thunderstorms is expected to be fairly high and most areas can expect to see rain later today into tonight. Went above guidance for highs at location along and east of I-77 corridor where it will take longer for clouds to thicken. Thunderstorms today will produce locally heavy rain and the Storm Prediction Center has included the area in a marginal risk for severe weather. Deep layer sheer will generally be on the order of 15-25 knots but upper level support may support a few stronger storms this afternoon/evening. Another shortwave is expected to round the base of the upper trough overnight and take on a slight negative tilt across western New York/Pennsylvania on Wednesday. Additional scattered showers and thunderstorms are expected on Wednesday afternoon across the eastern half of the forecast area. Temperatures will drop back 5 degrees or more from today's highs across eastern areas on Wednesday where thunderstorms develop. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY NIGHT/... The short term begins Thursday with models showing an upper low over Ontario and a trough digging southeast into the Great Lakes region. An upper ridge will be over the Southern Plains. At the surface, a cold front will be just to our northwest and is expected to move through the region during the afternoon. Will have high chance and likely pops for showers and thunderstorms. Best chance southeast given timing of the front. Friday the upper low moves ese to James Bay involving much of Ontario and Quebec. Models show building high pressure and drier, post cold front air across the region. During the afternoon however a short wave will drop southeast across the eastern lakes and possibly bringing enough moisture to combine with lake instability with cool air aloft to create showers off the lake. Will have low chance pops for the traditional snow belt areas. Will continue the threat into Friday night before drying out for Saturday as the high moves overhead. Highs Thursday in the lower 80s. Friday and Saturday will be mostly in the mid and upper 70s. && .LONG TERM /SATURDAY THROUGH MONDAY/... Models differ significantly through the long term and for now will stick close to blended guidance and persistence which favor the drier ECMWF. Will have pops no greater than slight chance through the period with partly cloudy skies. Highs will be in the lower 80s. && .AVIATION /12Z Tuesday THROUGH Saturday/... VFR conditions in place across the area this morning with isolated showers already popping up across NW Ohio. Showers and thunderstorms still expected to develop along the lake breeze by 16-18Z. Additional showers and thunderstorms will develop ahead of the approaching trough and move from west to east during the 17-00Z window. Added Tempo groups for thunderstorms to all terminals except ERI where convection may be just south of the airport. The chance of thunderstorms does continue into tonight but with lesser confidence. MVFR likely with brief IFR possible in thunderstorms. Wind gusts of 30 knots or higher is also possible. Southwest winds initially will shift off the lake and be disrupted by thunderstorm and outflow boundaries during the afternoon, eventually becoming southwest again late in the period. OUTLOOK...Non-VFR possible in thunderstorms on Wednesday afternoon/evening in showers and thunderstorms. && .MARINE... Today expect mainly southwest flow at 5 to 10 knots ahead of an approaching cold front moving through the central lakes. The cold front will drop across the lake Wednesday. Winds will remain fairly light however and do not expect any headlines. Thursday however a stronger cold front will cross the lake. Current guidance suggests 15 to 20 knots from the west turning wnw in the afternoon with highest winds central and east. Current model forecasts for waves suggests winds and waves will remain below small craft levels but am thinking the east half will see four foot waves for a period of time through the afternoon. Thursday night through Saturday expect mainly northwest flow with building high pressure from the west. Winds Friday, especially east could be enough for 3-4 foot waves through the afternoon but otherwise, winds and waves will diminish as high pressure moves overhead. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None. && SYNOPSIS...KEC NEAR TERM...KEC/Saunders SHORT TERM...TK LONG TERM...Griffin/TK AVIATION...KEC MARINE...Griffin/TK
Hazardous Weather Outlook National Weather Service Cleveland OH 940 AM EDT Tue Aug 6 2019 OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-071345- 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- 940 AM EDT Tue Aug 6 2019 This Hazardous Weather Outlook is for north central Ohio, northeast Ohio, northwest Ohio and northwest Pennsylvania. .DAY ONE...Today and tonight. Showers and thunderstorms will expand across the area today. A few of the strongest thunderstorms may produce wind gusts to 50 mph or hail to the size of a penny. Thunderstorms will be most likely between 12 PM and 8 PM. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Thunderstorms are expected to develop ahead of a cold front on Thursday afternoon. Large hail and damaging winds will possible along with locally heavy rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. LEZ061-142>149-162>169-071345- 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- 940 AM EDT Tue Aug 6 2019 This Hazardous Weather Outlook is for Lake Erie. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Thunderstorms are expected to develop ahead of a cold front on Thursday afternoon. Large hail and damaging winds will possible along with locally heavy rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed.
Special Weather Statement
National Weather Service Cleveland OH
1023 AM EDT Tue Aug 6 2019
OHZ006-061500-
Wood-
1023 AM EDT Tue Aug 6 2019
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN WOOD COUNTY...
At 1023 AM EDT, a strong thunderstorm was located over Deshler, or 14
miles northeast of Ottawa, moving northeast at 15 mph.
Winds in excess of 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Weston, Hoytville, Custar and Milton Center.
LAT...LON 4127 8388 4136 8376 4121 8365 4116 8376
4117 8388
TIME...MOT...LOC 1423Z 234DEG 15KT 4120 8389
SaundersThe Cleveland radar (KCLE), 126 km away, was scanning. The volume nearest the first event began at 15:21 UTC.
23 thunderstorm wind, 1 tornado. Local standard time, as filed.
A tree was blown down on to a house.
There was a tree blown down across Route 2.
Numerous trees were blown down.
A barn was destroyed and some trees were blown down near Fostoria.
Several power lines were blown down along with large tree branches.
Multiple trees were blown down through Pepper Pike.
Several large tree limbs and trees were blown down.
A tree was blown down on a power line. A utility pole was snapped.
A tree fell on a sheriff vehicle.
Several tree and large branches were blown down.
A large tree was blown down.
Several power lines were knocked down on to utility poles.
Several trees and power lines were blown down throughout the city.
Multiple trees were blown down.
Multiple trees and large tree limbs were blown down. Festival tents were blown in or down around the courthouse square.
A large tree was blown on to the road.
A tree was blown down on Route 303 and Coit Road which was blocking the road.
A large tree branch was blown down on a power line causing a fire.
An EF-1 tornado briefly touched down in Huron County approximately 1.5 miles south of downtown Norwalk. The tornado started near Highway 20 approximately 0.5 miles west of Highway 250. The tornado moved northwest with a track length of 1.5 miles and a path width of 50 yards. Maximum estimated wind speeds were up to 100 mph. The tornado was one the ground for a couple minutes.
Multiple trees were snapped and uprooted on Millersburg Road.
There was tree damage observed with numerous large tree branches blown down.
At least one tree was blown down in Walnut Creek Township.
A tree was blown down on a house along with power lines.
Several large tree branches were blown down on the southbound lanes of Erie Avenue.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2019Every state in 2019This day in weather historyThe tornado archive for Ohio, 2019Warnings in Ohio, August 2019
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: 845636, 845637, 845638, 847494, 847496, 845661, 845662, 845663, 845666, 845667, 845668, 845669, 845670, 845671, 845672, 845678, 845685, 845712, 845633, 845716, 845717, 845718, 845719, 845720.