Tornado and Damaging Winds in Pennsylvania, June 6, 2010

Name: Tornado and Damaging Winds in Pennsylvania, June 6, 2010
Start: 2010-06-06T06:05
End: 2010-06-06T07:28
Location: Pennsylvania

June 6, 2010 · NWS PBZ · 3 events in 2 counties and zones

Isolated severe thunderstorms developed in western Pennsylvania ahead of a strong cold front moving east across the upper Ohio valley. One of these storms produced a EF0 tornado in Mercer county, Pennsylvania.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $130,000
Crop damage: None recorded
Events: 3

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.

What happened

The episode as NWS PBZ wrote it up.

What forecasters said that day

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 6, 1:52 AM EST, 4 hours 13 minutes earlier.

Area forecast discussion, Jun 6, 1:52 AM EST, 4 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
252 AM EDT SUN JUN 6 2010

.SYNOPSIS...
A COLD FRONT WILL SWEEP ACROSS THE AREA TODAY...BRINGING SHOWERS
AND THUNDERSTORMS. SOME OF THE STORMS MAY BE SEVERE THROUGH THIS
MORNING WITH LOCALLY HEAVY RAINFALL POSSIBLE. SHOWERS WILL END
TONIGHT AS THE COLD FRONT EXITS TO THE EAST. HIGH PRESSURE WILL
BRING DRY...COOLER...AND LESS HUMID CONDITIONS FOR EARLY IN
THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
SCATTERED THUNDERSTORMS ARE CLIPPING NORTH OF I-80 TO THE SOUTH
OF A WARM FRONT. THE COLD FRONT IS STILL WELL OFF TO THE WEST...SO
MOST OTHER AREAS ARE DRY. WITH POTENTIAL FOR ROTATING STORMS AHEAD
AND ALONG THE COLD FRONT...A TORNADO WATCH HAS BEEN ISSUED THRU 9
AM ALONG A ZANESVILLE/WASHINGTON/LATROBE LINE NORTHWARD...INCLUDING
THE PIT METRO AREA. THE FRONT SHOULD BE MOVING THROUGH EARLY THIS
MORNING ACROSS EASTERN OHIO...AROUND SUNRISE ACROSS WESTERN
PA...EXITING EASTERN MD BY AFTN. THE THREAT OF FLASH FLOODING WILL
ALSO CONTINUE THRU THIS MORNING...SO WILL RETAIN THE WATCH UNTIL
NOON. PRECIP CHANCES WILL DIMINISH SIGNIFICANTLY AFTER THE FRONTAL
PASSAGE THIS AFTN...WITH GUSTY WINDS UP TO 30 MPH DEVELOPING IN
THE WAKE OF THE FRONT. RESIDUAL SHOWERS WILL DIMINISH THIS EVENING
ENDING FOR ALL AREAS OVERNIGHT AS UPPER LEVEL LOW PRESSURE EXITS
TO THE E/NE.

&&

.SHORT TERM /MONDAY THROUGH TUESDAY/...
HIGH PRESSURE WILL BRIEFLY CROSS THE AREA MONDAY FOR DRY...COOLER
AND MUCH LESS HUMID CONDITIONS...WITH LOWS MONDAY NIGHT IN THE
COOL 40S FOR ALL AREAS. THE NEXT SYSTEM IN ZONAL FLOW WILL ARRIVE
BY LATE TUESDAY BRINGING A CHANCE OF SHOWERS AND THUNDERSTORMS.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
LOW PRESSURE WILL CROSS THE REGION FOR MIDWEEK. WITH SOME TIMING
DIFFERENCES ON THE GREATEST FORCING...WILL LEAVE POPS CHANCE FOR
INTO THURSDAY. HIGH PRESSURE WILL BRING A DRY PERIOD FOR
LATE THURSDAY THROUGH FRIDAY. A WARM FRONT IS PROGGED TO PUSH
NORTHEAST ACROSS THE REGION SATURDAY WITH ANOTHER CHANCE OF
SHOWERS AND STORMS. NEAR NORMAL TEMPERATURES ARE EXPECTED FOR
MIDWEEK...WARMING TO AROUND 5 DEGREES NORMAL BY NEXT WEEKEND.

&&

.AVIATION /07Z SUNDAY THROUGH THURSDAY/...
A LOW PRESSURE SYSTEM WILL MOVE JUST NORTH OF THE REGION THIS
MORNING...WITH AN ASSOCIATED COLD FRONT SLIDING SOUTHEAST ACROSS
AREA TAFS. SHOWERS AND STORMS WITH REDUCED CONDITIONS CAN BE
EXPECTED WITH THIS FRONTAL PASSAGE. STRONG WINDS ALOFT COULD LEAD
TO LOW LEVEL WIND SHEAR THIS MORNING AS WELL. THE BOUNDARY SHOULD
BE EAST OF AREA TAFS BY 15Z...WITH CONDITIONS IMPROVING RAPIDLY
THEREAFTER. GUSTY WINDS WILL BE EXPECTED ALONG THIS
BOUNDARY...THEN AGAIN FOLLOWING THE BOUNDARY. CONDITIONS WILL
SLOWLY LIFT FROM IFR TO MVFR EARLY THIS AFTERNOON...THEN TO MVFR
TO VFR TOWARD THE END OF THE TAF PERIOD.

SURFACE HIGH PRESSURE WILL BUILD INTO THE REGION TONIGHT WITH MAINLY
VFR WEATHER EXPECTED SUNDAY NIGHT THROUGH TUESDAY. ANOTHER SYSTEM
WILL TRACK EAST FROM THE CENTRAL PLAINS BRINGING ANOTHER ROUND OF
SHOWERS AND THUNDERSTORM WITH THE POTENTIAL FOR RESTRICTIONS TUESDAY
NIGHT THROUGH EARLY THURSDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...FLASH FLOOD WATCH UNTIL NOON EDT TODAY FOR MDZ001.
OH...FLASH FLOOD WATCH UNTIL NOON EDT TODAY FOR OHZ039>041-048>050-
     057>059-068-069.
PA...FLASH FLOOD WATCH UNTIL NOON EDT TODAY FOR PAZ007>009-013>016-
     020>023-029>032.
WV...FLASH FLOOD WATCH UNTIL NOON EDT TODAY FOR WVZ001>004-012-
     021>023-041.

&&

Hazardous weather outlook, Jun 6, 2:08 AM EST, 3 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
308 AM EDT SUN JUN 6 2010

OHZ039>041-048>050-057>059-068-PAZ007>009-013>016-020>023-029-030-
WVZ001>003-071000-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-
MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MERCER-VENANGO-FOREST-LAWRENCE-
BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-INDIANA-
WASHINGTON-WESTMORELAND-HANCOCK-BROOKE-OHIO-
308 AM EDT SUN JUN 6 2010

...FLASH FLOOD WATCH IN EFFECT UNTIL NOON EDT TODAY...
...TORNADO WATCH 270 IN EFFECT UNTIL 9 AM EDT THIS MORNING...

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.

   TORNADO WATCH.
   FLASH FLOOD WATCH.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. THE MAIN
SEVERE THREAT WILL BE DAMAGING WINDS...BUT LARGE HAIL...HEAVY
RAIN...AND TORNADOES ARE ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

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-OHZ069-PAZ031-032-WVZ004-012-021>023-041-071000-
GARRETT-MONROE-GREENE-FAYETTE-MARSHALL-WETZEL-MARION-MONONGALIA-
PRESTON-TUCKER-
308 AM EDT SUN JUN 6 2010

...FLASH FLOOD WATCH IN EFFECT UNTIL NOON EDT TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST
CENTRAL OHIO...SOUTHWEST PENNSYLVANIA...NORTHERN WEST VIRGINIA 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.

   FLASH FLOOD WATCH.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. THE MAIN
SEVERE THREAT WILL BE DAMAGING WINDS...BUT LARGE HAIL...HEAVY
RAIN...AND TORNADOES ARE ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

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.

In the hours before

Special weather statement, Jun 6, 12:53 AM EST, 5 hours 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
153 AM EDT SUN JUN 6 2010

PAZ008-009-015-060700-
CLARION PA-FOREST PA-VENANGO PA-
153 AM EDT SUN JUN 6 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
VENANGO...FOREST AND CLARION...

AT 148 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 4 MILES WEST OF OIL CITY...MOVING EAST
AT 50 MPH. WIND GUSTS TO 50 MPH...PEA SIZED HAIL...LOCALLY HEAVY
RAINFALL IS POSSIBLE WITH THESE STORMS.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  VAN...                SENECA...             OIL CITY...
  KNOX...               OIL CREEK STATE PARK...
  FRYBURG...            TIONESTA...           WEST HICKORY...
  COOK FOREST STATE PARK...                   KELLETTVILLE...
  REDCLYFFE...          MARIENVILLE...

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

LAT...LON 4162 7895 4158 7896 4144 7901 4144 7907
      4141 7908 4136 7909 4133 7917 4134 7918
      4132 7918 4134 7920 4131 7922 4126 7936
      4120 7980 4153 7986 4164 7955

Special weather statement, Jun 6, 5:23 AM EST, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
623 AM EDT SUN JUN 6 2010

OHZ039-048-057-058-061100-
COSHOCTON OH-GUERNSEY OH-MUSKINGUM OH-TUSCARAWAS OH-
623 AM EDT SUN JUN 6 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
MUSKINGUM...GUERNSEY...COSHOCTON AND TUSCARAWAS...

AT 618 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS NEAR NEW GUILFORD...MOVING EAST AT 50
MPH. WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

IN ADDITION...HEAVY RAIN WITH THESE STORMS CAN CAUSE PONDING OF
WATER ON ROADS AND IN LOW LYING AREAS.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  NEW GUILFORD...       DILLON STATE PARK...  NELLIE...
  COOPERDALE...         WARSAW...             DRAKE...
  CONESVILLE...         ADAMSVILLE...         COSHOCTON...
  FERNCLIFF...          OTSEGO...             WEST LAFAYETTE...

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM EDT SUNDAY MORNING FOR
EAST CENTRAL OHIO AND WESTERN PENNSYLVANIA AND NORTHERN WEST
VIRGINIA.

&&

LAT...LON 4021 8218 4022 8218 4023 8219 4030 8220
      4037 8219 4039 8218 4041 8146 3996 8150
      4002 8220

Special weather statement, Jun 6, 5:52 AM EST, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
652 AM EDT SUN JUN 6 2010

PAZ007-008-014-061130-
BUTLER PA-MERCER PA-VENANGO PA-
652 AM EDT SUN JUN 6 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
BUTLER...VENANGO AND MERCER...

AT 645 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS NEAR SHARON...MOVING EAST AT 50 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

IN ADDITION...HEAVY RAIN WITH THESE STORMS CAN CAUSE PONDING OF
WATER ON ROADS AND IN LOW LYING AREAS.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  SHARON...             HERMITAGE...          FARRELL...
  FREDONIA...           MERCER...
  MAURICE K GODDARD STATE PARK...             STONEBORO...
  GROVE CITY...         POLK...

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM EDT SUNDAY MORNING FOR
EAST CENTRAL OHIO AND WESTERN PENNSYLVANIA AND NORTHERN WEST
VIRGINIA.

&&

LAT...LON 4145 7989 4111 7995 4115 8053 4130 8053
      4131 8052 4145 8052 4146 8052

Special weather statement, Jun 6, 6:03 AM EST, 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
703 AM EDT SUN JUN 6 2010

OHZ048-057-058-061145-
COSHOCTON OH-GUERNSEY OH-MUSKINGUM OH-
703 AM EDT SUN JUN 6 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
MUSKINGUM...GUERNSEY AND COSHOCTON...

AT 700 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS NEAR PLAINFIELD...MOVING EAST AT 50
MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

IN ADDITION...HEAVY RAIN WITH THESE STORMS CAN CAUSE PONDING OF
WATER ON ROADS AND IN LOW LYING AREAS.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  WEST LAFAYETTE...     OTSEGO...             FERNCLIFF...
  COSHOCTON...          ADAMSVILLE...         PLAINFIELD...
  BODEN...              CAMBRIDGE...          KIMBOLTON...
  SALT FORK STATE PARK...                     BIRMINGHAM...
  OLD WASHINGTON...

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM EDT SUNDAY MORNING FOR
EAST CENTRAL OHIO AND WESTERN PENNSYLVANIA AND NORTHERN WEST
VIRGINIA.

&&

LAT...LON 4030 8188 4029 8161 4021 8161 4021 8133
      4016 8133 4016 8131 3997 8128 4000 8189

The radar

The Pittsburgh radar (KPBZ), 93 km away, was scanning. The volume nearest the first event began at 11:04 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind, 1 tornado. Local standard time, as filed.

Tornado, Mercer

When: June 6, 6:05 AM EST to 6:08 AM EST
Where: Mercer County, 1.63 mi S of Shenango to 1.25 mi WNW of Kremis
Rating: EF0
Path length: 3 mi
Path width: 80 yd
Property damage: $100,000
Reported by: NWS Storm Survey
Coordinates: 41.356, -80.398

An NWS storm survey found an EF0 tornado touched down about 3 miles south of Greenville just east of the Shenango River and had a path length of close to 3 miles east along Kidds Mill Road before dissipating. Numerous trees were snapped or toppled as well as power lines and power poles. 3 homes suffered minor roof damage. The maximum winds were estimated at 70 MPH with a maximum width of about 80 yards.

Thunderstorm Wind, Mercer

When: June 6, 6:15 AM EST
Where: Mercer County, 0.86 mi SE of Fredonia
Measured: 50 kt (58 mph) estimated gust
Property damage: $30,000
Reported by: Trained Spotter
Coordinates: 41.320, -80.260

A trained spotter reported trees and power lines down in Fredonia.

Thunderstorm Wind, Clarion

When: June 6, 7:28 AM EST
Where: Clarion County, 1.7 mi WSW of Lucinda
Measured: 52 kt (60 mph) measured gust
Reported by: Trained Spotter
Coordinates: 41.310, -79.360

A trained spotter reported a measured wind gust of 60 MPH.

What these are

Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Pennsylvania in 2010 Every state in 2010 This day in weather history The tornado archive for Pennsylvania, 2010 Warnings in Pennsylvania, June 2010

Sources

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: 229832, 230637, 230638.