A cold front moved through northwest Pennsylvania during the late afternoon hours of the 26th. Some of the thunderstorms ahead of the cold front became severe.
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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 cold front moved through northwest Pennsylvania during the late afternoon hours of the 26th. Some of the thunderstorms ahead of the cold front became severe.
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 26, 2:02 PM EST, 1 hour 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 302 PM EDT WED SEP 26 2007 .SYNOPSIS... COLD FRONT SLOWLY SINKING SOUTHEAST ACROSS THE NORTHERN AREAS AND WILL BECOME NEARLY STATIONARY OVER THE AREA AS A WEAK WAVE OF LOW PRESSURE MOVES NORTHEAST ON THE FRONT. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT AND REMAIN IN PLACE THROUGH THE WEEKEND. ANOTHER COLD FRONT WILL MOVE THROUGH THE AREA TUESDAY EVENING FOLLOWED BY ANOTHER HIGH PRESSURE. && .NEAR TERM /THROUGH THURSDAY/... TRAINING THUNDERSTORMS WILL CONTINUE THROUGH THE REST OF THE AFTERNOON INTO THIS EVENING. COLD FRONT HAS VIRTUALLY STALLED OVER THE AREA JUST IN TIME FOR THE WAVE OF LOW PRESSURE TO MOVE NORTHEAST ACROSS THE AREA. THE COMBINATION OF THE UPPER LEVEL SHORTWAVE...SURFACE WAVE...AND COPIOUS AMOUNTS OF MOISTURE OVER THE AREA AND LIGHT WIND FLOW...I EXPECT THERE WILL BE PERIODS OF LOCALLY HEAVY DOWNPOURS DURING THE NIGHT. AREAS THAT HAD SIGNIFICANT FLOODING LAST MONTH AROUND THE FINDLAY AREA HAVE SINCE RECOVERED AND AT THIS TIME...WE BELIEVE THAT THE RIVERS AND MOST STREAMS SHOULD BE ABLE TO HANDLE THE WATER. HOWEVER...WE WILL CONTINUE TO MONITOR THE FLOOD POTENTIAL THROUGH THE NIGHT ACROSS THE AREA. WAVE OF LOW PRESSURE WILL PULL OUT TO THE NORTHEAST THURSDAY MORNING AND DRAG THE PRECIPITATION WITH IT. SOME WEAK WRAP AROUND MOISTURE WILL PUSH INTO THE AREA BY THURSDAY AFTERNOON BUT THE HEAVIEST PRECIPITATION SHOULD PUSH OFF TO THE EAST LEAVING BEHIND ONLY A SLIGHT CHANCE OF RAIN INTO THURSDAY AFTERNOON IN THE EAST. HIGH PRESSURE WILL BEGIN TO BUILD INTO THE WESTERN HALF OF THE AREA THURSDAY AFTERNOON SETTING UP FOR A NICE WEEKEND WEATHERWISE. ADJUSTED MAV TEMPERATURES LOOK REASONABLE SO WILL LEAN TOWARD THEM DURING THE FIRST TWO PERIODS. && .SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY/... FAIR WEATHER AND GRADUALLY IMPROVING SKIES RETURN THURSDAY NIGHT INTO FRIDAY AS A LARGE AREA OF HIGH PRESSURE BUILDS EAST AND DOMINATES THE FORECAST AREA. JUST SOME MINOR TWEAKS TO CURRENT FORECAST TEMPERATURES THURSDAY NIGHT AND FRIDAY AS COLD AIR ADVECTION TAKES PLACE AHEAD OF THE HIGH PRESSURE. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... TRANSITIONAL PATTERN CONTINUES WITH ALTERNATING WEAK RIDGES AND TROUGHS MOVING THROUGH THE AREA OVER THE NEXT SEVERAL DAYS. WEAK RIDGE BUILDS IN FRIDAY NIGHT SETTING UP FOR A NICE WEEKEND WEATHER WISE. CENTER OF SURFACE HIGH PRESSURE WILL PASS OVER THE AREA AND WINDS WILL LIKELY GO LIGHT AND VARIABLE BY FRIDAY NIGHT INTO SATURDAY. WARM AIR ADVECTION WILL DEVELOP DURING THE DAY SATURDAY INTO SATURDAY NIGHT IN ADVANCE OF THE NEXT WEAK TROUGH AND ASSOCIATED SHORTWAVE MOVING EAST INTO THE AREA. SURFACE LOW TRACKS NORTHEAST ACROSS THE WESTERN LAKES WITH A COLD FRONT PASSING THROUGH THE AREA SOME TIME ON MONDAY. COLD FRONT APPEARS TO BE VERY WEAK AS PACIFIC AIR MASS IN THE WAKE OF THE FRONT MODIFIES OVER TIME. RIDGE SHIFTS EAST OFF THE ATLANTIC COAST BY TUESDAY MORNING AND ANOTHER ROUND OF SOUTH TO SOUTHWEST FLOW DEVELOPS WITH INCREASING DEW POINTS. ANOTHER GRADUALLY WEAKENING COLD FRONT SHIFTS EAST TOWARD THE AREA TUESDAY NIGHT. FRONT APPEARS TO WASH OUT BY WEDNESDAY MORNING SOUTHEAST OF THE AREA. HIGH PRESSURE TAKES OVER ON WEDNESDAY. TEMPERATURES APPEAR TO BE ON THE COOL SIDE THROUGH THE PERIOD AND WILL LEAN TOWARD THE MIDDLE OF THE ROAD TO HIGH END OF THE ENSEMBLE TEMPERATURE GUIDANCE. THIS IS BASED ON GENERAL AGREEMENT BETWEEN THE GFS AND THE EUROPEAN SHOWING MUCH STRONGER LOW LEVEL WARM AIR ADVECTION PATTERNS DEVELOPING IN THE WAKE OF THE HIGH PRESSURE CENTERS MOVING EAST AND COLD FRONTS WEAKENING AND MODIFYING BY THE TIME THEY REACH THE FORECAST AREA. MOISTURE APPEARS TO BE LIMITED WITH THE FRONTS SO WILL KEEP CHANCES OF PRECIPITATION AT A MINIMUM FOR NOW. && .AVIATION /19Z WEDNESDAY THROUGH MONDAY/... COLD FRONT EXTENDS FROM WESTERN LAKE ERIE ACROSS NORTHWEST OHIO THROUGH A POINT SOUTHEAST OF KTOL. NOT A LOT OF PRECIP ACROSS THE AREA AT THIS TIME BUT WOULD EXPECT NMRS SHWRS AND A FEW THUNDERSTORMS TO DEVELOP EARLY THIS AFTERNOON JUST GIVEN HEATING. ANOTHER PROBLEM HOWEVER WILL BE THE AREA OF MODERATE TO HEAVY RAIN AND EMBEDDED THUNDERSTORMS MOVING NORTHEAST ALONG THE FRONT IN SOUTHERN INDIANA. CONDITIONS ARE MVFR ACROSS MOST OF THE AREA AND THIS SHOULD PERSIST THROUGH MUCH OF THE AFTERNOON AND INTO THE EVENING...BECOMING IFR OVERNIGHT AND EVENTUALLY LIFR CIGS AND FOG TOWARDS MORNING. AS FOR THE PRECIPITATION ACROSS INDIANA. HAVE TIMED THIS INTO FDY BY 20Z AND MFD AT 21Z AND KCLE AND CAK BY 23Z. AGAIN WITH THE FRONT IN THE AREA AND THE AMOUNT OF MOISTURE ACROSS THE AREA EXPECT CIGS AS VSBYS DROPPING TO LIFR BY 06-09Z. EXPECT COLDER AND DRIER FOR THE WKND ALTHOUGH THERE MAY BE SOME LAKE CLOUDS THU NIGHT-FRI WITH CYCLONIC FLOW AND COOL TEMPS AT 850MB. && .MARINE... COLD FRONT APPEARS TO BE ACROSS MOST OF THE LAKE ALREADY AND SHOULD MOVE INTO NORTHERN OHIO AND NORTHWESTERN PENNSYLVANIA AND STALL OUT NEXT COUPLE OF HOURS. THERE WILL LIKELY BE SEVERAL ROUNDS OF SHOWERS AND STORMS OVERNIGHT AS A WEAK LOW RIDES NE ALONG THE FRONT. LINGERING SHOWERS WILL CONTINUE THURSDAY MORNING. HIGH PRES SHOULD BEGIN TO BUILD OVER THE LAKE TOMORROW AFTERNOON AND THEN WILL LINGER OVER THE REGION INTO SUNDAY. ANOTHER COLD FRONT WILL TRY TO CROSS THE LAKE AT THE END OF THE PERIOD. WINDS AND WAVES SHOULD BE MINIMAL MOST OF THE PERIOD. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE. PA...NONE. MARINE...NONE. && SYNOPSIS...LOMBARDY NEAR TERM...LOMBARDY SHORT TERM...LOMBARDY LONG TERM...LOMBARDY AVIATION...TK MARINE...KUBINA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CLEVELAND OH 515 AM EDT WED SEP 26 2007 LEZ142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047-089- PAZ001>003-270915- MAUMEE BAY TO RENO BEACH OHIO-RENO BEACH TO THE ISLANDS OHIO- THE ISLANDS TO VERMILION OHIO-VERMILION TO AVON POINT OHIO- AVON POINT TO WILLOWICK OHIO-WILLOWICK TO GENEVA-ON-THE LAKE OHIO- GENEVA-ON-THE-LAKE TO CONNEAUT OHIO-CONNEAUT OHIO TO RIPLEY NY- MAUMEE BAY TO RENO BEACH OHIO BEYOND 5 NM OF SHORE- RENO BEACH TO THE ISLANDS OHIO BEYOND 5 NM OF SHORE- THE ISLANDS TO VERMILION OHIO BEYOND 5 NM OF SHORE- VERMILION TO AVON POINT OHIO BEYOND 5 NM OF SHORE- AVON POINT TO WILLOWICK OHIO BEYOND 5 NM OF SHORE- WILLOWICK TO GENEVA-ON-THE-LAKE OHIO BEYOND 5 NM OF SHORE-GENEVA-ON- THE-LAKE TO CONNEAUT OHIO BEYOND 5 NM OF SHORE- CONNEAUT OHIO TO RIPLEY NY BEYOND 5 NM OF SHORE-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- 515 AM EDT WED SEP 26 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ERIE...NORTH CENTRAL OHIO...NORTHEAST OHIO...NORTHWEST OHIO AND NORTHWEST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT A COLD FRONT WILL MOVE FROM CHICAGO TO NORTHWEST OHIO THIS AFTERNOON. SHOWERS AND THUNDERSTORMS WILL DEVELOP AHEAD OF THIS FRONT...SOME POSSIBLY SEVERE WITH LARGE HAIL AND DAMAGING WINDS. LOCALLY HEAVY RAIN WILL BE POSSIBLE AS WELL THIS AFTERNOON AS THE FRONT SLOWLY MOVES INTO PENNSYLVANIA TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED IF STORMS BECOME SEVERE THIS AFTERNOON AND TONIGHT.
The Pittsburgh radar (KPBZ), 111 km away, was scanning. The volume nearest the first event began at 20:47 UTC.
2 thunderstorm wind. Local standard time, as filed.
Numerous trees were reported down within and around Cochranton.
Several trees were reported down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2007Every state in 2007This day in weather historyWarnings in Pennsylvania, September 2007
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: 60708, 60709.