A line of showers and thunderstorms moved across northern Ohio during the afternoon of July 17th. At least one of the thunderstorms produced some hail.
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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 line of showers and thunderstorms moved across northern Ohio during the afternoon of July 17th. At least one of the thunderstorms produced some hail.
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 17, 12:05 PM EST, 1 hour 1 minute earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 105 PM EDT FRI JUL 17 2009 .SYNOPSIS... LOW PRESSURE ALOFT WILL DEEPEN ACROSS THE GREAT LAKES LATE THIS WEEK. SEVERAL WAVES OF LOW PRESSURE WILL ROTATE SOUTHEAST ACROSS THE LOWER GREAT LAKES ON FRIDAY AND SATURDAY. COOLER AIR WILL SPREAD IN THROUGH THE WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... COLD FRONT AT 15Z WAS LOCATED ACROSS THE WESTERN PORTION OF THE COUNTY WARNING AREA(CWA) AND STRETCHES FROM PUT-IN-BAY TO NEAR FINDLAY. A LINE OF SHOWERS AND THUNDERSTORMS HAVE BEEN DEVELOPING ALONG THIS BOUNDARY AND WILL NEED TO BE MONITORED THROUGH THE AFTERNOON. CANT RULE OUT SOME STRONG THUNDERSTORMS ALONG THIS BOUNDARY ESPECIALLY IF ANY HEATING CAN OCCUR IN ADVANCE OF IT. THERE ARE A FEW BREAKS INDICATED ON SATELLITE SOUTHWEST OF THE MANSFIELD AREA AT 15Z AND IS EXPECTED TO CONTINUE TO MOVE EASTWARD THROUGH THE AFTERNOON. THIS MAY ALLOW FOR ENOUGH HEATING TO ASSIST IN THE DEVELOPMENT OF A COUPLE STRONG TO SEVERE THUNDERSTORMS AS THEY MOVE INTO WESTERN PA. CHANCES STILL LOOK TOO SLIM TO MENTION IN THE ZONES OR HWO AT THIS TIME. DEWPOINTS IN THE LOWER 50S AND SOME BRIEF CLEARING IS EXPECTED IN THE WAKE OF THE FRONT. HOWEVER THE CLOUD COVER ASSOCIATED WITH THE COLD CORE OF THE UPPER LEVEL LOW OVER THE NORTHERN GREAT LAKES WILL BEGIN TO MOVE INTO THE REGION. ONLY CHANGES TO THE CURRENT FORECAST WERE TO TWEAK THE DIURNAL TRENDS. && .SHORT TERM /6 PM THIS EVENING THROUGH MONDAY NIGHT/... UNSEASONABLY COOL AIRMASS MOVING IN WITH THE PASSAGE OF THE PRIMARY COLD FRONT THIS EVENING. BY 12Z SAT H8 TEMPERATURES DROP TO AROUND +6C. THIS IS ENOUGH FOR LAKE EFFECT/ENHANCED CLOUDS AND PRECIPITATION. NOW THAT IT IS ABOUT 24 HOURS OUT HAVE PUT WEIGHT INTO LOCAL 4KM NAM AND 12KM GFS RUNS...ESPECIALLY WITH UNSEASONABLE AIRMASS. MODELS SHOWING WNW FLOW OFF THE LAKE AND SOME CONVERGENCE. WILL NEED A VORT OR SURFACE TROUGH AS WELL...BUT HAVE INCREASED POPS TO LIKELY FOR THE SNOW BELT COUNTIES SATURDAY MORNING AND HAVE THUNDER CHANCES WITH ENOUGH INSTABILITY OVER THE LAKE. EXPECTING MORE CELLULAR ACTIVITY INTO SATURDAY AFTERNOON...AND HAVE SHOWERS/NO THUNDER AWAY FROM THE LAKE. HIGH SATURDAY WILL BE RESTRICTED TO THE MID/UPPER 60S. NIGHT LOWS THROUGH THIS PERIOD WILL BE IN THE 50S...LOCALLY DEPENDENT UPON ANY BREAKS IN THE CLOUDS...ESPECIALLY AWAY FROM THE LAKE. WORST IS OVER BY SUNDAY AS UPPER LOW BEGINS TO PULL OUT. UPPER AND SURFACE TROUGHS HANG BACK OVER THE EASTERN LAKES...BUT BY SUNDAY AFTERNOON HIGH PRESSURE IS BEGINNING TO BUILD INTO IL/IN AND THERE IS LESS MOISTURE TO WORK WITH. CHANCE POPS. MONDAY WILL BE ONE BETTER. && .LONG TERM /TUESDAY THROUGH FRIDAY/... NO SIGNIFICANT CHANGES TO THE LONG TERM FORECAST EARLY THIS MORNING. 00Z GFS STILL SUPPORTS HIGH PRESSURE RIDGE EXTENDING BACK INTO THE AREA ON TUESDAY. A CHANCE OF SHOWERS WEDNESDAY THROUGH THURSDAY AS THE AREA COMES UNDER THE INFLUENCE OF UPPER LEVEL TROUGH AND COLD FRONT APPROACHING FROM THE WEST AND EAST COAST DISTURBANCE MOVING UP INTO THE AREA. HOWEVER WITH TIMING OF THESE FEATURES IN QUESTION WILL CONTINUE WITH PREVIOUS FORECAST FOR NOW WITH JUST SLIGHT CHANCE OF POPS. TEMPERATURES STILL LOOK LIKE THEY WILL BE NEAR NORMAL TUESDAY THROUGH THURSDAY. && .AVIATION /17Z FRIDAY THROUGH TUESDAY/... A LINE OF SHOWERS AND THUNDERSTORMS HAVE DEVELOPED IN ADVANCE OF THE COLD FRONT EARLY THIS AFTERNOON. THIS LINE SHOULD START NEAR THE I-71 CORRIDOR AROUND 18Z AND PUSH EAST TO ERI-YNG AROUND 21Z. SOME CU DEVELOPING AROUND 4-5KFT BEHIND FRONT. BROKEN CU SHOULD FOLLOW THE FRONT THIS AFTERNOON. SOME LOW LEVEL MOISTURE WILL ROTATE AROUND THE UPPER LEVEL LOW OVERNIGHT. THIS COULD BRING SOME MVFR CONDITIONS OVER MOST OF THE TAF SITES 06Z-12Z. CIGS SHOULD RAISE THROUGHOUT THE MORNING TO VFR BY AFTERNOON BUT REMAIN BROKEN THROUGH 18Z. .OUTLOOK...ISOLATED NON VFR CONDITIONS EAST SECTIONS SUNDAY AND VFR CONDITIONS MONDAY AND TUESDAY. && .MARINE... SERIES OF TROUGHS/COLD FRONT WILL ROTATE SE ACROSS THE LAKE THROUGH SATURDAY NIGHT. FLOW SHOULD BE AROUND 10 TO 20 KNOTS MOST OF THE TIME JUST BELOW SMALL CRAFT ADVISORY. THE GREATEST THREAT FOR REACHING SCA WOULD BE LATE THIS AFTERNOON AND GOING INTO TONIGHT WHEN FLOW BECOME WEST TO NORTHWEST AND SPEEDS COULD REACH THE HIGHER END OF THE 10 TO 20KT RANGE BUT FOR NOW WILL LEAVE WAVES BELOW CRITERIA. HOWEVER CENTRAL AND EASTERN BASIN WITH THE WEST TO NORTHWEST FLOW LATE TODAY AND INTO SATURDAY SHOULD STILL BE RATHER CHOPPY. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...NONE. && SYNOPSIS...OUDEMAN NEAR TERM...MULLEN SHORT TERM...OUDEMAN LONG TERM...RANDEL AVIATION...GARNET MARINE...RANDEL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CLEVELAND OH 630 AM EDT FRI JUL 17 2009 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-181100- 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- 630 AM EDT FRI JUL 17 2009 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...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. OUDEMAN
The Cleveland radar (KCLE), 12 km away, was scanning. The volume nearest the first event began at 18:07 UTC.
1 hail. Local standard time, as filed.
Hail up to penny size was observed. Several homes on the south side of Strongsville sustained roof damage from the hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2009Every state in 2009This day in weather historyWarnings in Ohio, July 2009
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: 189149.