Isolated severe thunderstorms developed along a cold front that moved across east central Ohio and northern Pennsylvania. These thunderstorms produced both both hail and wind damage across the region.
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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 PBZ wrote it up.
Isolated severe thunderstorms developed along a cold front that moved across east central Ohio and northern Pennsylvania. These thunderstorms produced both both hail and wind damage across the region.
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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Sep 7, 1:52 PM EST, 5 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 252 PM EDT TUE SEP 7 2010 .SYNOPSIS... A COLD FRONT WILL CROSS THE REGION TONIGHT...BRINGING A CHANCE OF SHOWERS. THIS FRONT WILL BRING MUCH COOLER TEMPERATURES INTO LATE WEEK. && .NEAR TERM /THROUGH WEDNESDAY/... COLD FRONT ACROSS NORTHWEST OHIO WILL WORK ACROSS REGION THIS EVENING WITH A SCATTERED BAND OF SHOWERS AND A FEW THUNDERSTORMS EXPECTED. BEHIND THE FRONT MUCH COOLER AIR WILL ARRIVE BY MORNING WITH LOWS IN THE MID TO UPPER 50S. WITH NORTHWEST WINDS WEDNESDAY EXPECT SOME CLOUDS ACROSS THE NORTHERN TIER OFF THE LAKES AND POSSIBLY A SPRINKLE. TEMPERATURES WILL BE MUCH COOLER WITH UPPER 60S NORTH UNDER CLOUDS TO MID 70S SOUTH WHERE SUNSHINE PREVAILS. SPS ISSUED FOR ELEVATED FIRE DANGER INTO THIS EVENING BEFORE RELATIVE HUMIDITY RISES AS FRONT APPROACHES. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... UPPER LEVEL LOW WILL SPIN ACROSS THE NORTHERN LAKES TO NEW ENGLAND THROUGH THE PERIOD WITH NORTHWEST FLOW TO DOMINATE WEATHER. EXPECT CLOUDS OFF OF THE LAKES TO BE ACROSS THE NORTH IN A DIURNAL FASHION WITH A SPRINKLE OR TWO POSSIBLE FAR NORTH. OTHERWISE SEASONABLY COOL THROUGH THE PERIOD. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... STORM SYSTEM IN THE NORTHERN PLAINS WILL PUSH A WARM FRONT ACROSS REGION SATURDAY WITH WARMING TEMPERATURES ALONG WITH INCREASING MOISTURE AND SHOWER CHANCES. COLD FRONT WILL MOVE ACROSS REGION SUNDAY WITH MILD CONDITIONS AND SHOWERS. CLOSE TO HPC PROGS THROUGH PERIOD. AFTER FRONTAL PRECIP MOVES OUT FAIR AND DRY BEYOND THOUGH END OF FORECAST PERIOD. && .AVIATION /19Z TUESDAY THROUGH SUNDAY/... WINDS S/SW AT 10-14KT WITH GUSTS TO 25KT THIS AFTN. CLOUDS WILL INCREASE BY EARLY THIS EVENING AS A COLD FRONT APPROACHES. EXPECT A 2-4 HOUR PERIOD OF SHWRS ALONG THE BOUNDARY...THUS HAVE INCLUDED VFR SHWRS FROM 01-04Z AT ZZV...03-07Z AT HLG/FKL/AGC/PIT/BVI...AND 06-09Z FOR LBE/MGW/DUJ. ANY RESTRICTIONS WILL BE VERY SHORT LIVED AND NOT INCLUDED IN THE TERMINALS. LINGERING STRATOCUMULUS WILL PREVAIL WEDNESDAY IN THE WAKE OF THE COLD FRONT...WITH AN ISOLATED SHWR POSSIBLE NORTH OF PIT...WITH SOME MVFR RESTRICTIONS POSSIBLE. GUSTY WEST WINDS 10-15KTS GUSTING 20-25KTS MIXING DOWN BY EARLY AFTERNOON. VFR CONDITIONS AREA WIDE ARE EXPECTED THURSDAY/FRIDAY UNDER HIGH PRESSURE...WITH A CHANCE OF SHWRS AND RESTRICTIONS RETURNING FOR SATURDAY AND SUNDAY AS THE NEXT FRONTAL SYSTEM IS PROGGED TO AFFECT THE AREA. CLEARING MONDAY AND BEYOND. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 856 AM EDT TUE SEP 7 2010 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-081300- GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO- FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY- ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-GREENE-FAYETTE-HANCOCK- BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER- 856 AM EDT TUE SEP 7 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. SCATTERED THUNDERSTORMS ALONG A COLD FRONT LATE THIS AFTERNOON INTO EARLY TONIGHT MAY BE STRONG WITH ISOLATED SEVERE THUNDERSTORMS POSSIBLE. THE MAIN THREAT FROM ANY SEVERE STORM WOULD BE DAMAGING WINDS WITH SMALL HAIL POSSIBLE. AHEAD OF THE COLD FRONT...THE COMBINATION OF LOW FUEL MOISTURE...RISING TEMPS...RELATIVELY LOW DEW POINTS...AND GUSTY WINDS COULD PRODUCE A FIRE HAZARD. ALTHOUGH...THE RED FLAG CRITERIA IS NOT FORECAST TO BE MET...THIS SITUATION SHOULD BE MONITORED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 238 PM EDT TUE SEP 7 2010 MDZ001-PAZ016-021>023-029>032-WVZ003-004-012-021>023-041-080045- GARRETT-JEFFERSON PA-ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON- WESTMORELAND-GREENE-FAYETTE-OHIO-MARSHALL-WETZEL-MARION- MONONGALIA-PRESTON-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... PUNXSUTAWNEY...BROOKVILLE...REYNOLDSVILLE...BROCKWAY... PITTSBURGH METRO AREA...KITTANNING...FORD CITY...LEECHBURG... FREEPORT...APOLLO...INDIANA...WASHINGTON...CANONSBURG...DONORA... CALIFORNIA...CHARLEROI...MONONGAHELA...MCMURRAY...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...WAYNESBURG... FAIRDALE...UNIONTOWN...CONNELLSVILLE...OHIOPYLE...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 238 PM EDT TUE SEP 7 2010 ...ELEVATED FIRE DANGER THIS AFTERNOON... RECENT DRY WEATHER COMBINED WITH THIS AFTERNOONS LOW HUMIDITY AND GUSTY WINDS HAS BROUGHT AND ELEVATED FIRE RISK TO PORTIONS OF THE REGION THIS AFTERNOON. OPEN BURNING INTO THIS EVENING CAN BE CONSIDERED HAZARDOUS. ACCIDENTAL ESCAPED DEBRIS COULD CAUSE ANY FIRE TO SPREAD. IN WILD LAND AREAS BE CAREFUL WITH HEAT AND SPARKS WHILE OPERATING ANY EQUIPMENT...OR SMOKING. A COLD FRONT WILL CROSS THE REGION EARLY TONIGHT BRINGING SHOWERS FOLLOWED BY COOLER CONDITIONS WEDNESDAY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 627 PM EDT TUE SEP 7 2010 OHZ039>041-048>050-PAZ007-013-080030- TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH- MERCER-LAWRENCE- INCLUDING THE CITIES OF...NEW PHILADELPHIA...DOVER... UHRICHSVILLE...CARROLLTON...EAST LIVERPOOL...SALEM...COLUMBIANA... EAST PALESTINE...WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ... HOPEDALE...STEUBENVILLE...SHARON...HERMITAGE...GROVE CITY... GREENVILLE...FARRELL...NEW CASTLE...ELLWOOD CITY 627 PM EDT TUE SEP 7 2010 ...THUNDERSTORMS WITH GUSTY WINDS... A LINE OF SCATTERED THUNDERSTORMS WILL MOVE INTO PORTIONS OF EASTERN OHIO AND WESTERN PENNSYLVANIA DURING THE EVENING HOURS. THESE STORMS COULD PRODUCE WIND GUSTS UP TO 50 MPH AND SOME SMALL HAIL. IN ADDITION...RAINFALL UP TO ONE INCH IS POSSIBLE.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
654 PM EDT TUE SEP 07 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0653 PM HAIL SALEM 40.90N 80.86W
09/07/2010 E0.50 INCH COLUMBIANA OH TRAINED SPOTTER
&&
TGREENThe Pittsburgh radar (KPBZ), 100 km away, was scanning. The volume nearest the first event began at 23:56 UTC.
1 thunderstorm wind. Local standard time, as filed.
Law enforcement reported trees down in Greenville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2010Every state in 2010This day in weather historyWarnings in Pennsylvania, September 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: 258050.