A few areas of thunderstorms developed on September 2nd, partially a result of a weak upper level disturbance over the Ohio Valley, also due to an outflow boundary moving southeast out of Michigan. The air mass in place across the region had temperatures in the upper 80s with moderate instability.
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.
A few areas of thunderstorms developed on September 2nd, partially a result of a weak upper level disturbance over the Ohio Valley, also due to an outflow boundary moving southeast out of Michigan. The air mass in place across the region had temperatures in the upper 80s with moderate instability. The first area of wind damage was located in Stark County near Navarre where thunderstorm winds brought down 8-10 trees.
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 Sep 2, 2:51 PM EST, 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 351 PM EDT WED SEP 2 2015 .SYNOPSIS... HIGH PRESSURE OVER THE TENNESSEE VALLEY WILL DRIFT EAST AND WEAKEN. A WEAK UPPER AIR DISTURBANCE WILL DROP ACROSS THE GREAT LAKES ON THURSDAY. HIGH PRESSURE OVER EASTERN CANADA WILL BUILD ACROSS THE NORTHEAST STATES BY FRIDAY AND CONTINUE THROUGH THE WEEKEND. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE SOUTH AND EAST OF THE FORECAST AREA BY EARLY THIS EVENING WITH THE POSSIBLE EXCEPTION OF A SCATTERED SHOWER/STORM ACROSS NORTHWEST OHIO WHERE THE THETA-E IS HIGHER AND THE INSTABILITY IS REBOUNDING AFTER THE EARLIER ACTIVITY. COULD BE A FEW FOG POCKETS OVERNIGHT WHERE THERE WAS RAIN TODAY BUT EVEN IN THOSE AREAS WIDESPREAD DENSE FOG IS NOT ANTICIPATED...JUST THE USUAL FOGGY SPOTS. LOW TEMPERATURES TONIGHT A DEGREE OR TWO ABOVE GUIDANCE BASED ON PERSISTENCE. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY NIGHT/... A DECENT SHORT WAVE WILL SLIDE OVER THE TOP OF THE RIDGE AS EVIDENCED BY THE THUNDERSTORMS NEAR LAKE SUPERIOR TODAY. NOT SURE HOW THURSDAY WILL PLAY OUT. THERE MAY WELL BE SHOWERS AND THUNDERSTORMS APPROACHING NORTHWEST OHIO EARLY IN THE DAY. DOES THAT ACTIVITY WEAKEN AND NEW ACTIVITY REDEVELOP OR DOES THE NEW ACTIVITY JUST GRADUALLY DEVELOP ACROSS NORTHWEST OHIO AND SPREAD EAST? THE LAKE BREEZE BOUNDARY WILL LIKELY ALSO ENHANCE THE SHOWERS AND THUNDERSTORMS. WILL FORECAST "SCATTERED" FOR NOW WITH HIGHER POPS ACROSS NORTHWEST AND NORTH CENTRAL OHIO WHERE THE THETA-E IS HIGHER. HIGH TEMPS MAY BE A DEGREE OR TWO COOLER THAN RECENT DAYS IF THERE ARE MORE CLOUDS AND SHOWERS AROUND BUT DEW POINTS WILL BE JUST AS HIGH. THE RIDGE ALOFT WILL REMAIN FIXED OVER THE AREA THROUGH THE WEEKEND. LITTLE FLOW ALOFT AND ALL OF THE MODEL HINT AT A WEAK TROUGH AROUND 500 MB OVER THE MIDWEST ON FRIDAY. WILL KEEP A SMALL CHANCE FOR THUNDERSTORMS MAINLY ACROSS NORTHWEST OHIO ON FRIDAY. CANNOT RULE OUT A FEW AFTERNOON THUNDERSTORMS ON SATURDAY BUT WILL NOT MENTION IT ON THE FORECAST BASED ON MINIMAL COVERAGE. HIGHS MAINLY IN THE UPPER 80S/AROUND 90 AND HUMID. && .LONG TERM /SUNDAY THROUGH WEDNESDAY/... THE GFS AND EUROPEAN MODELS REMAIN IN AGREEMENT ON STRONG UPPER- LEVEL RIDGE PATTERN THAT WILL REMAIN OVER THE EASTERN UNITED STATES THROUGH MONDAY. TEMPERATURES WILL BE ABOUT 10 DEGREES ABOVE AVERAGE WITH A MINIMAL CHANCE OF RAIN THROUGH MONDAY AFTERNOON. THE MAIN QUESTION IN THE LONG TERM CONTINUES TO BE ON MONDAY NIGHT INTO TUESDAY WITH THE APPROACH OF THE NEXT WEATHER SYSTEM. TODAY'S GFS AND ECMWF STILL ARE IN DISAGREEMENT ON THE TIMING AND INTENSITY OF AN UPPER-LEVEL TROUGH AND ASSOCIATED SURFACE COLD FRONT. THE GFS HAS A STRONGER AND FASTER COLD FRONT WHILE THE ECMWF HAS A MORE DIFFUSE COLD FRONT THAT MAY NOT BE AS SIGNIFICANT. BOTH WOULD BRING SOME TYPE OF RAIN CHANCE TO THE AREA SO HAVE SLIGHT CHANCE POPS BEGINNING ON MONDAY NIGHT WITH CHANCE POPS ON TUESDAY. TEMPERATURE SOLUTIONS ARE QUITE DIFFERENT ON THE BACK SIDE OF THE COLD FRONT FOR EACH SOLUTION NOT TO MENTION THE TIMING ISSUE. GIVEN CURRENT RIDGE SETUP THOUGHTS ARE MORE ALIGNED WITH ECMWF SO TRENDED TEMPS TOWARDS THE ECMWF AND CLIMO FOR NOW. AFTER THE COLD FRONT...A SURFACE LOW WILL MOVE IN FROM THE CENTRAL PLAINS ON WEDNESDAY INTO THURSDAY AND COULD BRING ANOTHER ROUND OF WET WEATHER TO THE AREA. FOR NOW JUST CONTINUED WITH CHANCE POPS WEDNESDAY INTO THURSDAY MORNING. && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... MUCH OF THE SAME CONTINUES TODAY WITH HIGH PRESSURE IN CONTROL. A FEW POP UP SHRA/TS POSSIBLE BUT AGAIN COVERAGE WILL BE EXTREMELY LIMITED. IF THERE WAS ANYTHING THAT COULD HINT TO A SOMEWHAT BETTER CHANCE OF A SHRA/TS SUCH AS HIGH RES MODELS OR CURRENT ANALYSIS EXTRAPOLATED...A VCSH OR VCTS HAS BEEN INCLUDED. UNCERTAIN IF LAKE BREEZE WILL MAKE IT THROUGH KCLE THIS AFTERNOON...AT LEAST NOT TO TAKE IT PAST 330 DEGREES. TONIGHT INTO THURSDAY THE PATTERN SHIFTS EVER SO SLIGHTLY AND WE WILL BE ABLE TO GET A VERY DIFFUSE COLD FRONT SINK SOUTHEASTWARD ACROSS THE AREA IN THE MORNING. HAVE INCLUDED A MID DECK AND A FEW VCSH WITH THIS FEATURE. TS ARE POSSIBLE. EARLY MORNING/SUNRISE MVFR VSBY POSSIBLE TOO. OVERALL THE WINDS WHICH WILL BE WEST- SOUTHWEST FOR THE REMAINDER OF THIS AFTERNOON WILL COME AROUND TO THE NW-N ON THURSDAY BEHIND THAT FRONT. OUTLOOK...AREAS OF NON VFR EACH MORNING IN FOG AND HAZE. ISOLATED THUNDERSTORMS MAY DEVELOP EACH AFTERNOON/EVENING. && .MARINE... RATHER TRANQUIL LATE SUMMER WEATHER WILL CONTINUE WITH GENERALLY LIGHT WIND OVER THE LAKE THROUGH THE PERIOD. EXPECT THE AFTERNOON LAKE BREEZE TO SUBSIDE TOWARD SUN SET. A WEAK COLD FRONT IS EXPECTED TO CROSS THE LAKE ON THURSDAY WITH SCATTERED SHOWERS AND THUNDERSTORMS. WINDS WILL VEER TO THE NORTHEAST THURSDAY NIGHT AND FRIDAY. AS THE HIGH PRESSURE SLIPS BY TO THE EAST ON SATURDAY... WINDS WILL CONTINUE TO VEER TO THE SOUTHEAST AND THEN SOUTH ALL THE WHILE BEING LIGHT AND GENERALLY 10 KNOTS OR LESS. ON MONDAY WINDS WILL INCREASE SLIGHTLY FROM THE SOUTHWEST AS ANOTHER WEAK FRONTAL BOUNDARY APPROACHES THE LAKE FROM THE NORTHWEST. THE WEAK BOUNDARY WILL DISSIPATE OVER THE LAKE ON TUESDAY. A MORE SIGNIFICANT COLD FRONT WILL MOVE ACROSS THE LAKE ON THURSDAY. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...NONE. && SYNOPSIS...KOSARIK NEAR TERM...KOSARIK SHORT TERM... LONG TERM...LAPLANTE/SEFCOVIC AVIATION...OUDEMAN MARINE...LAPLANTE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CLEVELAND OH 311 AM EDT WED SEP 2 2015 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-030715- 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- 311 AM EDT WED SEP 2 2015 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...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
138 PM EDT WED SEP 02 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 PM TSTM WND DMG STRONGSVILLE 41.31N 81.83W
09/01/2015 CUYAHOGA OH PUBLIC
SEVERAL TREES DOWN IN THE CITY OF STRONGSVILLE NEAR THE
STILLBROOKE RESIDENTIAL DEVELOPMENT...REPORTS VIA SOCIAL
MEDIA AND BROADCAST MEDIA.
&&
SEFCOVICSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
215 PM EDT WED SEP 2 2015
OHZ036-037-021845-
MORROW-MARION-
215 PM EDT WED SEP 2 2015
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MORROW AND
SOUTHEASTERN MARION COUNTIES...
AT 215 PM EDT...A STRONG THUNDERSTORM WAS OVER ASHLEY...OR 10 MILES
NORTHEAST OF DELAWARE...MOVING SOUTHEAST AT 25 MPH. WINDS IN EXCESS
OF 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
CARDINGTON...ASHLEY...WALDO...MARENGO...FULTON AND STATE ROUTE 229 AT
US ROUTE 23.
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4036 8293 4041 8293 4042 8302 4043 8303
4044 8314 4046 8315 4054 8291 4054 8289
4035 8268
TIME...MOT...LOC 1815Z 336DEG 20KT 4043 8300
MULLENThe Cleveland radar (KCLE), 82 km away, was scanning. The volume nearest the first event began at 20:42 UTC.
2 thunderstorm wind. Local standard time, as filed.
The fire department reported 8 to 10 trees either sheared or uprooted when thunderstorms came through in the vicinity of Pidgeon Run Avenue Southwest and Poorman Street southwest in Navarre.
Law enforcement reported three trees brought down by thunderstorm winds in Marion.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2015Every state in 2015This day in weather historyWarnings in Ohio, September 2015
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: 602495, 602504.