An area of low pressure located over the northern tip of the Lower Peninsula of Michigan and cold frontal system approaching from the west allowed for the development of a large convective complex to move through northern Ohio.
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 located over the northern tip of the Lower Peninsula of Michigan and cold frontal system approaching from the west allowed for the development of a large convective complex to move through northern Ohio.
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, 6:53 PM EST, 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 753 PM EDT FRI JUL 23 2010 .SYNOPSIS... HOT AND HUMID CONDITIONS WILL CONTINUE THROUGH SATURDAY. A COLD FRONT WILL MOVE ACROSS THE REGION THROUGH THE DAY ON SUNDAY. HIGH PRESSURE WILL LINGER ACROSS THE REGION INTO TUESDAY. A WARM FRONT MAY RETURN TO THE REGION TUESDAY NIGHT INTO WEDNESDAY. && .NEAR TERM /THROUGH SATURDAY/... UPDATED TO ADD SEVERE THUNDERSTORM WATCH. STRONG TO SEVERE LINE OF THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS LAKE ERIE EARLY THIS EVENING. APPEARS THAT THE STRONGEST PORTION OF THIS LINE WILL REMAIN FROM LAKE COUNTY NORTHEAST INTO ERIE COUNTY PA. SINCE THERE APPEARS TO BE PLENTY OF WIND WITH THIS LINE WILL LEAVE THE SEVERE THUNDERSTORM IN ITS CURRENT CONFIGURATION. FOR THE REMAINDER OF THE EVENING WE BELIEVE THE OUTFLOW FROM THIS CONVECTION FROM CANADA WILL ATTEMPT TO BE A FOCUS FOR ADDITIONAL CONVECTION...ESPECIALLY EAST. ALSO WILL CONTINUE TO MONITOR THE CONVERGENCE ACROSS NORTHERN INDIANA. BELIEVE THIS WILL TAKE A LITTLE TIME TO GET GOING AS WE AWAIT THE NEXT PIECE OF JET ENERGY FROM THE NORTHERN PLAINS. IN ANY EVENT WILL GO WITH LIKELY POPS ACROSS ALL OF THE NORTHERN 2/3RDS OF THE REGION THROUGH THE NIGHT. OTHERWISE EXPECT ANOTHER VERY WARM AND MUGGY NIGHT. IF WE DO NOT GET ALL THAT MUCH COOLING FROM THUNDERSTORMS THROUGH THE NIGHT IT APPEARS THAT WE SHOULD SEE LOWS SIMILAR TO LAST NIGHT. && .SHORT TERM /SATURDAY NIGHT THROUGH MONDAY NIGHT/... THE HEAT WILL CONTINUE ON SATURDAY WITH ANOTHER ROUND OF STRONG TO SEVERE THUNDERSTORMS POSSIBLE. UNCERTAINTY IS WHAT BOUNDARY WILL BE ABLE TO INITIATE THE CONVECTION. MAY ONCE AGAIN BE SOME SORT OF LAKE ENHANCED BOUNDARY ACROSS THE NORTHEASTERN CWA AS WE AWAIT THE APPROACH OF A COLD FRONT SATURDAY NIGHT INTO SUNDAY. IT WILL BE HOT AGAIN SATURDAY AND WE MAY END UP NEEDING A HEAT ADVISORY FOR SATURDAY AFTERNOON. THIS WILL ALL HINGE ON HOW MUCH RAIN COOLED AIR CAN SETTLE INTO THE AREA OVERNIGHT TONIGHT. BY SUNDAY THE COLD FRONT WILL BE MOVING SOUTHWARD ACROSS THE AREA. A FEW THUNDERSTORMS MAY BE POSSIBLE ACROSS THE SOUTHERN PORTION OF THE REGION BUT BELIEVE THEY WILL EXIT THE REGION BY MID AFTERNOON. COOLER AND DRIER AIR WILL MOVE INTO THE REGION SUNDAY AFTERNOON AND EVENING MAKING IT FEEL MUCH MORE COMFORTABLE THAN TODAY AND SATURDAY. HIGH PRESSURE WILL LINGER INTO AT LEAST TUESDAY BEFORE A WARM FRONT BEGINS TO LIFT NORTHWARD ACROSS THE AREA TUESDAY NIGHT. COOLER SUNDAY THROUGH TUESDAY WITH HIGHS BACK DOWN TO SEASONAL LEVELS. && .LONG TERM /TUESDAY THROUGH FRIDAY/... THE LONG TERM FORECAST BEGINS WEDNESDAY 12Z WITH BOTH THE GFS AND ECMWF SHOWING A NEGATIVELY TILTED UPPER RIDGE FROM THE SOUTHEASTERN STATES INTO THE CENTRAL PLAINS. AT THE SURFACE LOW PRESSURE WILL BE CENTERED OVER THE CENTRAL PLAINS. A COLD FRONT WILL BE TO OUR NORTHWEST MOVING TOWARD THE AREA. THE FRONT APPEARS TO MOVE THROUGH THE AREA THURSDAY NIGHT. HIGH PRESSURE WILL BUILD INTO THE AREA BEHIND THE FRONT WITH COOLING INTO THE AREA MOSTLY SATURDAY. AHEAD OF THE FRONT WILL EXPECT GENERAL SUMMERTIME WEATHER WITH A CHANCE OF THUNDERSTORMS. FRIDAY WILL DROP NRN COUNTIES TO A SLIGHT CHANCE. TEMPS ABOVE NORMAL WEDNESDAY AND THURSDAY AND NEAR TO SLIGHTLY ABOVE FOR FRIDAY. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... THUNDERSTORMS CONTINUE TO DEVELOP AND MOVE EAST SOUTHEAST. LATEST CLUSTER COMING OUT OF SOUTHEAST MI AND ONTARIO WILL CROSS LAKE ERIE AND IMPACT NORTHEAST OHIO/NW PA AROUND 01Z. SEVERE POTENTIAL WITH THESE STORMS. CLE HAS A BETTER CHANCE WITH THIS ROUND THAN THE ONE THIS AFTERNOON. TOLEDO WILL BE IN THE FRINGES OF THIS CLUSTER OF STORMS. COULD BE A GOOD DEAL OF OCCASIONAL THUNDER THROUGH THE OVERNIGHT AS ADDITIONAL DEVELOPMENT ACROSS SW MI AND ONGOING CHICAGO CLUSTER MOVES EASTWARD ALONG THIS W/E AREA OF CONVERGENCE. SOUTHWEST FLOW PICKS UP AGAIN FOR SATURDAY. THUNDERSTORM CHANCES HIGH AGAIN...THIS TIME WITH COLD FRONT APPROACHING FOR EVENING. WILL RUN CB FROM ABOUT 18Z ONWARD INTO THE EVENING HOURS FOR CLE EXTENDED TAF PERIOD. .OUTLOOK...NON-VFR CONDITIONS IN SCATTERED SHRA/TSRA SATURDAY AFTERNOON AND SATURDAY NIGHT AND BRIEFLY WITH EARLY MORNING FOG/HAZE. && .MARINE... WINDS AND WAVES HAVE DIMINISHED ENOUGH TO DROP THE SMALL CRAFT ADVISORY ON THE EAST END OF THE LAKE. ONCE THE WINDS DIE DOWN THIS EVENING...LAKE SHOULD SEE RELATIVELY LIGHT FLOW THROUGH THE REST OF THE FORECAST PERIOD. COLD FRONT WILL MOVE THROUGH THE LAKE SATURDAY NIGHT FOLLOWED BY HIGH PRESSURE MONDAY INTO TUESDAY AND THEN A WARM FRONT AT THE END OF THE PERIOD. I AM NOT EXPECTING ANY SMALL CRAFT ADVISORY CONDITIONS DURING THAT TIME FRAME. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...NONE. && SYNOPSIS...MULLEN NEAR TERM...KIELTYKA/MULLEN SHORT TERM...MULLEN LONG TERM...TK AVIATION...OUDEMAN MARINE...KIELTYKA/LOMBARDY
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CLEVELAND OH 755 PM EDT FRI JUL 23 2010 LEZ142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047-089- PAZ001>003-250000- MAUMEE BAY TO RENO BEACH OH-RENO BEACH TO THE ISLANDS OH- THE ISLANDS TO VERMILION OH-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 MAUMEE BAY TO RENO BEACH- LAKE ERIE OPEN WATERS FROM RENO BEACH TO THE ISLANDS- LAKE ERIE OPEN WATERS FROM THE ISLANDS TO VERMILION- 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-LUCAS-WOOD- OTTAWA-SANDUSKY-ERIE OH-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-CRAWFORD PA- 755 PM EDT FRI JUL 23 2010 ...SEVERE THUNDERSTORM WATCH 526 IN EFFECT UNTIL 3 AM EDT SATURDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ERIE...NORTH CENTRAL OHIO...NORTHEAST OHIO...NORTHWEST OHIO AND NORTHWEST PENNSYLVANIA. .DAY ONE...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...SATURDAY THROUGH THURSDAY. STRONG TO SEVERE THUNDERSTORMS ARE ALSO POSSIBLE SATURDAY NIGHT...IN ADVANCE OF A COLD FRONT THAT WILL MOVE ACROSS THE AREA. THE MAIN THREAT WILL BE DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. LEZ061-250000- LAKE ERIE OPEN WATERS FROM RIPLEY TO BUFFALO NY- 755 PM EDT FRI JUL 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ERIE. .DAY ONE...TONIGHT. SOME OF THE THUNDERSTORMS WILL BE SEVERE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. STRONG TO SEVERE THUNDERSTORMS ARE ALSO POSSIBLE SATURDAY NIGHT...IN ADVANCE OF A COLD FRONT THAT WILL MOVE ACROSS THE AREA. THE MAIN THREAT WILL BE STRONG DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED.
The Cleveland radar (KCLE), 78 km away, was scanning. The volume nearest the first event began at 00:45 UTC.
13 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds uprooted tree. The tree fell onto a house.
Thunderstorm winds downed a few large trees.
Thunderstorm winds downed a large tree limb.
Thunderstorm winds downed a large tree limb.
Thunderstorm winds downed a large tree in Pierpont Township.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds downed several large tree limbs.
Thunderstorm winds downed two large trees in Mecca Township.
Thunderstorm winds downed a large tree which fell onto a house.
Thunderstorm winds downed a few large tree limbs.
Thunderstorm winds downed two large tree limbs.
Thunderstorm winds downed a couple large tree limbs.
Thunderstorm winds downed many trees in Milton, Jackson and Poland Townships.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2010Every state in 2010This day in weather historyWarnings in Ohio, July 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: 240303, 240314, 240317, 240321, 240325, 240327, 240331, 240333, 240319, 240338, 240336, 248749, 248750.