Scattered thunderstorms developed over northern Ohio during the afternoon of May 27th. A couple of the stronger storms became severe and caused minor damage.
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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.
Scattered thunderstorms developed over northern Ohio during the afternoon of May 27th. A couple of the stronger storms became severe and caused 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 May 27, 12:43 PM EST, 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 143 PM EDT THU MAY 27 2010 .SYNOPSIS... A WEAK COLD FRONT TO THE WEST WILL PUSH INTO WESTERN OHIO TODAY AND CONTINUE WEAKENING. A BACKDOOR COLD FRONT MOVING SOUTH THROUGH WESTERN NEW YORK WILL APPROACH AREAS OF NORTHWEST PENNSYLVANIA AND NORTHEAST OHIO ON FRIDAY. HIGH PRESSURE WILL BUILD INTO THE AREA FOR THE WEEKEND...BUT ANOTHER LOW PRESSURE IS EXPECTED TO IMPACT THE AREA ON MONDAY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... TWO AREA OF FOCUS FOR TODAY WILL BE WEAK UPPER LEVEL DISTURBANCE MOVING INTO THE AREA WITH WEAKENING COLD FRONT. LOOKS LIKE BEST CHANCES FOR ANY SHOWERS/THUNDERSTORMS WILL BE ACROSS THE WESTERN HALF OF THE AREA MAINLY THIS AFTERNOON AND EVENING. GUIDANCE POPS SPLIT WITH GFS AT LEAST SHOWING LOW CHC POPS WHILE NAM VALUES CONSIDERABLY LOWER. LEANED TOWARDS GFS POPS TO MENTION SOME CHC ESPECIALLY ACROSS SOUTHWEST AREAS LATER THIS AFTERNOON. ACROSS NW PA AND NE OH...MODELS SHOWING BACKDOOR COLD FRONT REMAINING TO THE NORTHEAST TODAY OVER WESTERN NEW YORK. ELSEWHERE ONLY MENTIONED A SLIGHT CHANCE MAINLY FOR THE POTENTIAL FOR AN ISOLATED SHOWER OR THUNDERSTORM. AS FOR TEMPS TODAY...LOOKS LIKE ANOTHER GOOD DAY FOR A LAKE BREEZE SET UP. RATHER IMPRESSIVE TEMPS YESTERDAY ESPECIALLY FOR TOL WHICH HIT 90. FOR TODAY WENT WITH HIGHS CLOSE TO YESTERDAY/S VALUES. ALONG THE LAKESHORE WITH PLENTY OF SUNSHINE TEMPS WILL HAVE A GOOD RUN NEAR MAXES AROUND MIDDAY THEN FALL BACK INTO THE AFTERNOON WITH LAKE BREEZE INFLUENCE. && .SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY NIGHT/... WEAKENING DISTURBANCE MAY ALLOW FOR SOME ISOLATED SHOWERS OR THUNDERSTORMS ACROSS SOUTHWEST AREAS INTO THE EVENING BUT ARE EXPECTED TO DISSIPATE SHORTLY AFTER SUNSET. TRENDED SLIGHTLY WARMER THAN GUIDANCE VALUES FOR TEMPS TONIGHT. BACKDOOR COLD FRONT PROGRESSES FARTHER SOUTH AND WEST INTO NORTHEAST OHIO AND NW PA ON FRIDAY ALLOWING FOR SOME CHANCE POPS OF SHOWERS AND THUNDERSTORMS. TRENDED TEMPS SLIGHTLY COOLER IN EASTERN AREAS TO ACCOUNT FOR ADDITIONAL CLOUDS AND PRECIP CHANCES WHILE CONTINUED WARMER FOR WESTERN LOCATIONS. HIGH PRESSURE BUILDING IN FROM THE WEST BEGINNING FRIDAY EVENING WILL WEAKEN THIS SYSTEM AND DRY THINGS OUT FOR SATURDAY. HIGH PRESSURE WILL CONTINUE OVER THE AREA ON SUNDAY. OVER THE WEEKEND WENT WITH A BLEND OF GUIDANCE VALUES WITH OVERALL HIGHS IN LOWER TO MID 80S BOTH DAYS. MAINLY CLEAR SKIES AT NIGHT COULD ALLOW FOR SOME RADIATING BUT LINGERING MOISTURE AND SHORT NIGHTS WOULD MAKE FOR LOWS MID 50S TO AROUND 60 SEEM REASONABLE. && .LONG TERM /MONDAY THROUGH WEDNESDAY/... GFS CONTINUES TO BE THE FASTEST MODEL BRINGING THE NEXT COLD FRONT ACROSS THE AREA QUICKLY ON MONDAY. THE GEM IS A LITTLE SLOWER AND THE ECMWF CONTINUES TO BE THE SLOWEST BRINGING A VERY WEAK VERSION OF THE FRONT THROUGH ON MONDAY NIGHT. WITH THE UNCERTAINTY... WILL CONTINUE TO MENTION A CHANCE OF SHOWERS/STORMS MONDAY AFTERNOON INTO TUESDAY ALTHOUGH IT CERTAINLY WILL NOT RAIN A LOT OF THE TIME. GETTING TO BE THAT TIME OF YEAR WHERE THE REFRESHING COOL AIR JUST BRUSHES THE AREA AND I HAVE A FEELING THE WEAKENING FRONT ON MONDAY/MONDAY NIGHT WILL TAKE ITS TIME GETTING SOUTH OF THE AREA ON TUESDAY. HOPEFULLY THE SURFACE HIGH PRESSURE WILL BUILD ACROSS THE GREAT LAKES BY WEDNESDAY. THE GFS BECOMES LITTERED WITH CONVECTIVE FEEDBACK BY WEDNESDAY. TEMPERATURES WILL GRADUALLY COOL DOWN THROUGH THE PERIOD AS THE SURFACE HIGH BUILDS IN. OUR FORECAST WILL BE A LITTLE SLOWER TO BRING IN THE COOLER AIR GIVEN THE POTENTIAL FOR A WEAK AND SLOWER COLD FRONT. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... THE BEST CHANCE FOR CONVECTION THROUGH THIS EVENING IS OVER WESTERN OHIO WHERE THE AIR MASS IS MOIST AND UNSTABLE ENOUGH AND CONVECTION HAS STARTED TO DEVELOP. IT IS POSSIBLE THAT SOME ISOLATED SHOWERS OR THUNDERSTORMS COULD OCCUR OVER THE SOUTHEAST PORTION OF THE FORECAST AREA THROUGH THIS EVENING. CONFIDENCE IS LOWER IN THAT AREA. FOR THE TAF SITES WILL ONLY MENTION TSRA OR CB FOR TOL...FDY AND MFD. THE SHOWERS/THUNDERSTORMS SHOULD DECREASE QUICKLY AFTER SUNSET. SOME AREAS OF MVFR FOG MAY DEVELOP AND BURN OFF BY 14Z. FOR FRIDAY THE MAIN THREAT OF CONVECTION WILL BE OVER THE EASTERN PORTION OF THE FORECAST AREA AS THE BACKDOOR COLD FRONT MOVES TOWARD THE REGION. THE AIR MASS IS NOT REAL MOIST SO THE THREAT OF CONVECTION WILL BE LIMITED. THE TAF SITES THAT HAVE THE BEST CHANCE TO BE IMPACTED WILL BE YNG AND CAK. .OUTLOOK...SOME MVFR BR POSSIBLE LATE FRIDAY NIGHT...SATURDAY NIGHT AND SUNDAY NIGHT. NON VFR MONDAY AND TUESDAY IN SHOWERS/THUNDERSTORMS. && .MARINE... A DISSIPATING COLD FRONT WILL SAG SOUTH ACROSS LAKE ERIE TODAY WITH ONLY A SLIGHT INCREASE IN WIND EXPECTED FROM THE WEST OR NORTHWEST AND VIRTUALLY NO WEATHER. A WEAK BACKDOOR COLD FRONT OVER UPSTATE NEW YORK IS EXPECTED TO STAY TO THE NORTHWEST OF LAKE ERIE. THE MAIN WEATHER PRODUCER THROUGH THE WEEKEND WILL CONTINUE TO BE A LARGE AREA OF HIGH PRESSURE STRETCHING FROM THE NORTHERN PLAINS TO EASTERN CANADA. THIS WILL KEEP THE WIND FROM THE NORTH TO NORTHEAST BUT THE GRADIENT IS LIGHT ENOUGH THAT THE WIND/WAVES ALONG THE SOUTH SHORE OF LAKE ERIE SHOULD REMAIN IN CHECK. BY EARLY NEXT WEEK THE HIGH PRESSURE AREA WILL MOVE OFF TO THE EAST AND WE WILL GET BACK INTO MORE NORMAL PATTERN OF SOUTHWEST FLOW ON THE LAKE. A WEAKENING COLD FRONT IS EXPECTED TO CROSS THE LAKE LATE MONDAY OR MONDAY NIGHT. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...NONE. && SYNOPSIS...ABE NEAR TERM...ABE SHORT TERM...ABE LONG TERM...KOSARIK AVIATION...KIELTYKA MARINE...KOSARIK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CLEVELAND OH 448 AM EDT THU MAY 27 2010 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-280900- LAKE ERIE OPEN WATERS FROM RIPLEY TO BUFFALO NY- 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- 448 AM EDT THU MAY 27 2010 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...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Northern Indiana radar (KIWX), 164 km away, was scanning. The volume nearest the first event began at 18:23 UTC.
2 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds toppled three utility poles.
Thunderstorm winds toppled a few trees.
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, May 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: 228922, 228923.