An area of low pressure moved east across the Great Lakes region during the afternoon and evening hours of June 27th. A warm front stretching southeast from the low moved across northern Ohio during the afternoon and evening hours.
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.
An area of low pressure moved east across the Great Lakes region during the afternoon and evening hours of June 27th. A warm front stretching southeast from the low moved across northern Ohio during the afternoon and evening hours. Showers and thunderstorms developed along the front with a few of the stronger storms becoming severe. Very strong winds were associated with many of the thunderstorms. A 78 mph wind gust was measured in Findlay. A tornado hit Ashtabula County during the evening hours causing some minor 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 Jun 27, 12:36 PM EST, 1 hour 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 136 PM EDT SUN JUN 27 2010 .SYNOPSIS... LOW PRESSURE LOCATED OVER THE WESTERN LAKES THIS MORNING WILL MOVE EASTWARD INTO SOUTHERN ONTARIO THIS EVENING. AS THIS AREA OF LOW PRESSURE PROGRESSES FURTHER TO THE EAST IT WILL DRAG A COLD FRONT ACROSS THE REGION TONIGHT. A SECONDARY SURGE OF COOLER AIR WILL ARRIVE BY MONDAY EVENING AS AN UPPER LEVEL TROUGH LINGERS OVER THE NORTHEASTERN UNITED STATES INTO THURSDAY. SURFACE HIGH PRESSURE WILL BUILD BACK INTO THE AREA BY THURSDAY AND PERSIST INTO NEXT WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... ABLE TO PUT A FEW MORE DETAILS INTO THE FORECAST THIS AFTERNOON. OVER THE SHORT TERM FOCUS WILL BE ON SOUTHERN MI/NORTHERN IN. OUTFLOW FROM MI STORMS TO INTERACT WITH CONVECTION MOVING OUT OF IL ALONG E/W WARM FRONT. WILL STEADILY INCREASE THUNDERSTORM CHANCES FOR TOL VICINITY THROUGH REST OF THE AFTERNOON. ELSEWHERE SCATTERED CONVECTION WILL DEVELOP LATER IN THE AFTERNOON. SEVERE POTENTIAL IS PRESENT FOR THIS AFTERNOON. WARM AND HUMID...MORE SO THAN YESTERDAY. SEVERAL LOCATIONS WILL TOUCH 90 FOR HIGHS. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY NIGHT/... BY THIS EVENING ANY ONGOING THUNDERSTORMS COULD BEGIN TO DECREASE IN COVERAGE. HOWEVER ADDITIONAL ACTIVITY LOOKS TO MOVE INTO THE AREA AHEAD OF A COLD FRONT THAT WILL BE MOVING THROUGH THE MIDWEST. THE POTENTIAL EXISTS FOR AN MCS TO DEVELOP AND MOVE TOWARD THE AREA FROM THE WEST...SWEEPING ACROSS THE AREA THROUGH THE EVENING/OVERNIGHT. FOR NOW HAVE GONE WITH CATEGORICAL POPS FOR THE OVERNIGHT BUT INFLUENCE OF THE AFTERNOON CONVECTION COULD BECOME A FACTOR. NOT A HUGE CHANGE IN THE AIR MASS BEHIND THE FRONT THAT WILL SLIDE ACROSS THE AREA LATE TONIGHT INTO MONDAY MORNING. THIS WILL ALLOW HIGHS ON MONDAY TO REACH THE LOWER TO MID 80S. STILL ENOUGH MOISTURE WILL REMAIN AHEAD OF A SECONDARY SURGE OF COOLER AIR THAT WILL ARRIVE MONDAY EVENING TO KEEP AT LEAST A MENTION OF SHOWERS/THUNDERSTORMS IN THE FORECAST...ESPECIALLY THE EASTERN HALF OF THE REGION. TUESDAY INTO WEDNESDAY WILL BE ON THE COOL SIDE WITH HIGHS RANGING FROM THE UPPER 60S TO MIDDLE 70S. COOLEST TEMPERATURES WILL BE ACROSS NE OHIO INTO NW PA WHERE SOME LAKE EFFECT CLOUD COVER AND SHOWERS MAY DEVELOP. && .LONG TERM /THURSDAY THROUGH SATURDAY/... MODELS CONTINUE TO BE IN GOOD AGREEMENT MOVING A LARGE AREA OF HIGH PRESSURE ACROSS THE GREAT LAKES LATE THIS WEEK INTO THE WEEKEND. TEMPERATURES WARM BACK INTO THE 80S BY THE WEEKEND...BUT DRY CONDITIONS SHOULD CONTINUE THROUGH SATURDAY. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... WILL BE DIFFICULT TO TIME SHOWERS/STORMS AT ANY PARTICULAR TAF SITE BUT ALL SITES SHOULD SEE SHOWERS/STORMS AT OR IN THE VICINITY BETWEEN 18Z AND 01Z EXCEPT PERHAPS KERI WHICH WILL BE PROTECTED BY THE LAKE SHADOW FOR A WHILE. STRONGER STORMS MOVING ACROSS INDIANA WILL REACH KTOL 19Z-20Z AND KFDY SOON AFTER AND THEN MOVE EAST. THERE IS THE POTENTIAL FOR STRONG TO SEVERE WIND GUSTS WITH THE STORMS AND BRIEF IFR VISIBILITY. ADDITIONAL SHOWERS AND STORMS WILL LIKELY DEVELOP TONIGHT. IT WILL TAKE UNTIL MONDAY MORNING FOR THE FRONT TO CROSS THE AREA AT WHICH TIME THE AIR WILL BEGIN TO STABILIZE. SOME MVFR CEILINGS/VSBY LIKELY WITH FRONTAL PASSAGE MONDAY MORNING. .OUTLOOK...VFR DEVELOPING MONDAY AFTERNOON AND LIKELY CONTINUING THROUGH THE REMAINDER OF THE WEEK. && .MARINE... LIGHT/VARIABLE WINDS TODAY WILL GIVE WAY TO INCREASING SW FLOW OVERNIGHT AHEAD OF APPROACHING COLD FRONT. CONDITIONS WILL APPROACH SMALL CRAFT ADVISORY CRITERIA EAST OF CLEVELAND AS WINDS APPROACH 10 TO 20 KNOTS. CHOPPY CONDITIONS CONTINUE INTO MONDAY AS FRONT FINALLY PUSHES SOUTH ACROSS THE LAKE. WINDS DIMINISH WEDNESDAY AS CANADIAN HIGH PRESSURE MOVES ACROSS THE LAKES...BUT A NW-NE FLOW WILL CONTINUE THROUGH THURSDAY. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...NONE. && SYNOPSIS...MULLEN NEAR TERM...MULLEN/OUDEMAN SHORT TERM...MULLEN LONG TERM...DJB AVIATION...KOSARIK MARINE...DJB
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE CLEVELAND OH 1155 AM EDT SUN JUN 27 2010 LEZ142>144-162>164-OHZ003-006>009-017>019-027-028-036-281100- MAUMEE BAY TO RENO BEACH OH-RENO BEACH TO THE ISLANDS OH- THE ISLANDS TO VERMILION OH- LAKE ERIE OPEN WATERS FROM MAUMEE BAY TO RENO BEACH- LAKE ERIE OPEN WATERS FROM RENO BEACH TO THE ISLANDS- LAKE ERIE OPEN WATERS FROM THE ISLANDS TO VERMILION-LUCAS-WOOD- OTTAWA-SANDUSKY-ERIE OH-HANCOCK-SENECA-HURON-WYANDOT-CRAWFORD-MARION- 1155 AM EDT SUN JUN 27 2010 ...SEVERE THUNDERSTORM WATCH 423 IN EFFECT UNTIL 7 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ERIE...NORTH CENTRAL OHIO AND NORTHWEST OHIO. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. LEZ061-145>149-165>169-OHZ010>014-020>023-029>033-037-038-047-089- PAZ001>003-281100- LAKE ERIE OPEN WATERS FROM RIPLEY TO BUFFALO NY- VERMILION TO AVON POINT OH-AVON POINT TO WILLOWICK OH- WILLOWICK TO GENEVA-ON-THE LAKE OH-GENEVA-ON-THE-LAKE TO CONNEAUT OH- CONNEAUT OH TO RIPLEY NY- LAKE ERIE OPEN WATERS FROM VERMILION TO AVON POINT- LAKE ERIE OPEN WATERS FROM AVON POINT TO WILLOWICK- LAKE ERIE OPEN WATERS FROM WILLOWICK TO GENEVA-ON-THE-LAKE- LAKE ERIE OPEN WATERS FROM GENEVA-ON-THE-LAKE TO CONNEAUT- LAKE ERIE OPEN WATERS FROM CONNEAUT OH TO RIPLEY NY-LORAIN-CUYAHOGA- LAKE-GEAUGA-ASHTABULA INLAND-MEDINA-SUMMIT-PORTAGE-TRUMBULL-RICHLAND- ASHLAND-WAYNE-STARK-MAHONING-MORROW-HOLMES-KNOX-ASHTABULA LAKESHORE- NORTHERN ERIE-SOUTHERN ERIE-CRAWFORD PA- 1155 AM EDT SUN JUN 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ERIE...NORTH CENTRAL OHIO...NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS NORTHERN OHIO AND NORTHWEST PENNSYLVANIA THIS AFTERNOON INTO TONIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON. THE MAIN THREAT WILL BE STRONG DAMAGING WINDS. HOWEVER HAIL APPROACHING THE SIZE OF QUARTERS COULD OCCUR. A COLD FRONT MOVING ACROSS THE MIDWEST WILL ALSO ASSIST IN THE DEVELOPMENT OF THUNDERSTORMS FOR THE EVENING AND EARLY OVERNIGHT. STRONG DAMAGING WINDS MAY OCCUR WITH THIS ROUND OF THUNDERSTORMS AS WELL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. OUDEMAN
The Cleveland radar (KCLE), 121 km away, was scanning. The volume nearest the first event began at 19:29 UTC.
44 thunderstorm wind, 3 hail, 1 tornado. Local standard time, as filed.
Thunderstorm winds downed a few large trees.
Thunderstorm winds downed numerous trees across Erie County.
Thunderstorm winds downed a few trees.
Penny sized hail was observed.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds toppled at least one utility pole.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds downed several trees.
Thunderstorm winds downed a large tree.
Thunderstorm winds downed a large tree and several utility poles.
Thunderstorm wind gusts were estimated at 60 mph.
Thunderstorm winds downed several large tree limbs. A large tree was also reported down across State Route 53 north of Tiffin.
Thunderstorm winds downed several large tree limbs.
Thunderstorm winds downed a few trees.
Thunderstorm winds downed several large tree limbs.
Thunderstorm winds downed a couple large tree limbs.
Thunderstorm winds downed a few trees south of Hayesville.
Thunderstorm winds downed a couple large tree limbs.
Thunderstorm winds downed several trees and large tree limbs.
Thunderstorm winds downed several large limbs and snapped a power pole. A small shed was also leveled and two large storage tanks were displaced ten feet.
Trained spotters estimated thunderstorm winds at 65 mph. Numerous trees were reported down. At least one vehicle was damaged by a fallen tree.
A trained spotter estimated thunderstorm winds at 65 mph. A couple trees were reported down.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds downed several large trees and limbs.
A thunderstorm wind gust was measured at 60 mph.
Thunderstorm winds downed a few large tree limbs.
Penny sized hail was observed.
Thunderstorm winds snapped a power pole.
A 63 mph thunderstorm wind gust was measured west of Bowling Green.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds damaged the roof of a commercial building.
Thunderstorm winds downed a few trees in Brookfield Township.
Thunderstorm winds downed a few large tree limbs west of New London.
Thunderstorm winds downed a few trees.
Thunderstorm winds downed a few trees.
Thunderstorm winds caused a small building to partially collapse.
An EF1 tornado touched down near the intersection of Lake Erie Avenue and Point Drive on the west end of Conneaut. The tornado then traveled east approximately two and a quarter miles before lifting near the Intersection of Broad and Russell Streets. The damage path was no more than 100 yards in width and consisted of mainly downed trees and limbs Some roof damage was also observed, The roof of at least one garage was completely torn off. Many vehicles were damaged by fallen trees and flying debris.
A trained spotter measured a 75 mph thunderstorm wind gust south of Findlay.
An automated sensor at the Findlay Airport measured a 78 mph thunderstorm wind gust. The strong winds downed dozens of trees and large limbs in the Findlay area south through the Arlington area. A large tree crushed a house on County Road 172 southeast of Findlay. Scattered power outages were reported.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds downed several trees. A couple homes also lost sections of siding.
Nickel sized hail was observed.
Thunderstorm winds downed a tree and a large limb.
Thunderstorm winds downed a few trees.
Thunderstorm wind gusts estimated to be at least 60 mph damaged a factory west of Mansfield. The factory had windows blown out and lost a section of roofing.
Thunderstorm winds downed several trees across Richland County.
Thunderstorm winds downed a few trees north of Wooster.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2010Every state in 2010This day in weather historyThe tornado archive for Ohio, 2010Warnings in Ohio, June 2010
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: 231785, 231751, 231718, 231719, 231804, 231753, 231720, 231723, 231779, 231752, 231721, 231769, 231754, 231730, 231805, 231726, 231739, 231803, 231771, 231810, 231772, 231773, 231806, 231780, 231729, 231770, 231775, 231774, 231732, 231807, 231787, 231809, 231742, 231741, 231790, 231733, 231737, 231715, 231734, 231735, and more.