As a warm front moved northeast across the upper Ohio Valley a mesoscale convective complex developed across the eastern Great Lakes and moved south across portions of eastern Ohio and western Pennsylvania. Some of these thunderstorms were severe and produced scattered wind 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 PBZ wrote it up.
As a warm front moved northeast across the upper Ohio Valley a mesoscale convective complex developed across the eastern Great Lakes and moved south across portions of eastern Ohio and western Pennsylvania. Some of these thunderstorms were severe and produced scattered wind 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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Jun 7, 6:11 AM EST, 1 hour 9 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 711 AM EDT TUE JUN 7 2011 .SYNOPSIS... A COMPLEX OF THUNDERSTORMS CROSSING THE REGION TODAY WILL BRING A THUNDERSTORMS WITH INCREASING WARMTH AND HUMIDITY. HOT AND HUMID CONDITIONS WEDNESDAY UNDER HIGH PRESSURE. AN APPROACHING FRONT WILL BRING THE CHANCE FOR THUNDERSTORMS THURSDAY INTO THE WEEKEND. && .NEAR TERM /THROUGH TONIGHT/... 7AM UPDATE... MCS OVER LAKE ERIE WILL MOVE INTO THE CWA THIS MORNING. RAISED PROBIBILITY OF PRECIP AND CHANGED WEATHER GRIDS TO REFLECT HIGH CHANCE OF THUNDERSTORMS. CLOUD COVER RAISED ALSO. FARTHER SOUTH IN THE SOUTHERN PORTIONS OF THE CWA LEFT THE CURRENT GRIDS IN PLACE REFLECTING LESS PROBIBILITY THERE. PREVIOUS NEAR TERM DISSCUSION FOLLOWS... BROAD RIDGE OVER THE CENTRAL PORTION OF THE COUNTRY WILL BE SHIFTING EASTWARD OVER THE NEXT COUPLE OF DAYS. SHORTWAVE MOVING OVER THE RIDGE TODAY HAS SPAWNED AN MCS OVER ONTARIO THIS MORNING THAT WILL MOVE SOUTHEAST TOWARD REGION ESPECIALLY I-80 CORRIDOR AND RIDGES. INSTABILITY WILL BE INCREASING AS HIGHER DEW POINTS SURGE NORTHEAST. EXTENT OF THUNDERSTORMS IS QUESTIONABLE WITH SOME CAPPING PRESENT ON FORECAST SOUNDINGS. KEPT CHC POPS HIGHEST NORTHEAST AND RIDGES. AREA REMAINS IN SLIGHT RISK WITH CAPE INCREASING TO 2000 TO 3000 J/KG THIS AFTERNOON WHILE 0-6KM BULK SHEAR IS NEAR 30KTS. STORMS THAT DO FORM POTENTIALLY SEVERE WITH DAMAGING WINDS AND WILL CONTINUE MENTION IN HWO. AS SHORTWAVE EXITS THIS EVENING UPPER RIDGE WILL BUILD IN TO END THUNDERSTORM THREAT WITH WARM AND MUGGY CONDITIONS. && .SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/... HIGH PRESSURE RIDGE WILL CONTINUE TO SHIFT EAST WEDNESDAY WITH HOT AND HUMID CONDITIONS AND ONLY AN ISOLATED AFTERNOON THUNDERSTORM AT BEST. BY THURSDAY, RIDGE EROSION IS PROGGED TO BE WELL UNDERWAY VIA CROSSING SHORTWAVE ENERGY. THE SCENARIO PULLS A SURFACE COLD FRONT OVER THE UPPER OHIO REGION AND STALLS IT. SHOWER AND THUNDERSTORM CHANCES CONTINUE INTO THURSDAY NIGHT. CONTINUED HUMID WITH TEMPERATURES WELL ABOVE NORMAL. && .LONG TERM /FRIDAY THROUGH MONDAY/... COLD FRONT IS ANTICIPATED TO MOVE INTO FORECAST AREA THURSDAY NIGHT AND THEN HANG UP ACROSS REGION INTO THE WEEKEND. THIS WILL KEEP SHOWER AND THUNDERSTORM CHANCES IN THE FORECAST WITH BEST COVERAGE AND TIMING DIFFICULT DEPENDING ON EXACT PLACEMENT OF FRONT AND WHEN ANY IMPULSES WILL MOVE ALONG IT. ABOVE NORMAL TEMPERATURES UNTIL A STRONGER SHORTWAVE MAY PUSH THE FRONT FARTHER SOUTH WITH TEMPERATURES TRENDING TOWARD NORMAL WITH LOWERING HUMIDITY SUNDAY INTO MONDAY. && .AVIATION /11Z TUESDAY THROUGH SATURDAY/... EXCEPT FOR SOME IFR RESTRICTIONS IN PATCHY FOG EARLY THIS MORNING AT KZZV...GENERALLY VFR CONDITIONS ARE FORECAST THROUGH THE TAF PERIOD. AN UPPER LEVEL IMPULSE RIDING SOUTHEAST OVER TOP OF AN UPPER RIDGE COULD TRIGGER WIDELY SCATTERED THUNDERSTORMS IN THE AFTERNOON. MUCH UNCERTAINTY EXISTS IN THE TIMING AND LOCATION...THEREFORE MENTION OF CB WAS NOT INCLUDED IN THE TERMINALS. SOUTHWEST SURFACE WINDS WILL INCREASE TO AROUND 10 KT DURING THIS AFTERNOON. AVIATION OUTLOOK /00Z WEDNESDAY THROUGH SATURDAY/... BRIEF IFR CONDITIONS ARE POSSIBLE IN SCATTERED THUNDERSTORMS THURSDAY NIGHT INTO SATURDAY AS A COLD FRONT DROPS SOUTH FROM THE GREAT LAKES. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 723 AM EDT TUE JUN 7 2011 OHZ039>041-048>050-PAZ007-008-013-014-020-WVZ001-081130- TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-MERCER- VENANGO-LAWRENCE-BUTLER-BEAVER-HANCOCK- 723 AM EDT TUE JUN 7 2011 ...SEVERE THUNDERSTORM WATCH 436 IN EFFECT UNTIL NOON EDT TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. THE MAIN THREAT WILL BE FROM DAMAGING WIND AND LARGE HAIL. .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. MDZ001-OHZ057>059-068-069-PAZ009-015-016-021>023-029-031-073>076- WVZ002>004-012-021>023-041-081130- GARRETT-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-FOREST-CLARION- JEFFERSON PA-ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-GREENE- WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-BROOKE-OHIO- MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER- 723 AM EDT TUE JUN 7 2011 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. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. THE MAIN THREAT WILL BE FROM DAMAGING WIND AND LARGE HAIL. .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.
The Pittsburgh radar (KPBZ), 81 km away, was scanning. The volume nearest the first event began at 12:18 UTC.
2 thunderstorm wind. Local standard time, as filed.
Department of transportation reported trees down in Sharon.
Department of transportation reported trees and wires down near Jamestown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2011Every state in 2011This day in weather historyWarnings in Pennsylvania, June 2011
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: 321022, 321023.