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View Full Version : ANOTHER CONFIRMED TORNADO FROM THE AUGUST 20TH OUTBREAK


DarkSky
10-08-2009, 04:57 AM
AWCN11 CWTO 071706
WEATHER SUMMARY FOR ALL OF SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA TORONTO AT 1:05 PM EDT WEDNESDAY
7 OCTOBER 2009.
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==WEATHER EVENT DISCUSSION==
..ANOTHER CONFIRMED TORNADO FROM THE AUGUST 20TH OUTBREAK..
ADDITIONAL INVESTIGATIONS INTO THE TORNADO OUTBREAK OF AUGUST 20TH
HAS LED TO THE CONFIRMATION OF AN 18TH TORNADO FROM THAT EVENT.
THE TORNADO OCCURRED AROUND 8 PM ON THE 20TH OF AUGUST TO THE
NORTHEAST OF ORONO WHICH IS ABOUT 25 KM EAST OF OSHAWA. THE DAMAGE
PATH WAS ABOUT 3.5 KILOMETRES LONG AND ABOUT 100 METRES AT ITS
WIDEST. SOME TREES WERE BLOWN DOWN AND THERE WAS MINOR DAMAGE DONE TO
A HOME AND BARN. BASED ON THIS DAMAGE, THIS TORNADO WAS RATED AS A
FUJITA SCALE ZERO TORNADO WITH PEAK WINDS AROUND 115 KILOMETRES PER
HOUR. THIS IS THE WEAKEST RATING ON THE FUJITA WIND DAMAGE SCALE
WHICH GOES FROM ZERO TO 5.
THE AUGUST 20TH OUTBREAK HAS NOW YIELDED 18 TORNADOES. THIS IS A
RECORD FOR THE MOST TORNADOES TO OCCUR IN ONTARIO AND IN CANADA ON
ONE DAY. THE PREVIOUS RECORD WAS 17 TORNADOES WHICH OCCURRED IN
ONTARIO ON AUGUST 2ND 2006.
THE TOTAL NUMBER OF TORNADOES FOR THIS SEASON NOW STANDS AT 28. IN
AN AVERAGE YEAR ONTARIO HAS 11 TORNADOES. THE GREATEST NUMBER OF
TORNADO EVENTS IN ONE YEAR IN ONTARIO IS 29 WHICH OCCURRED IN 2006.
THE SUMMER SEVERE WEATHER SEASON NORMALLY BEGINS IN LATE APRIL AND
CONTINUES UNTIL EARLY OCTOBER.
ENVIRONMENT CANADA CONTINUES TO INVESTIGATE REPORTS CONCERNING THE
EVENTS OF AUGUST 20TH. FUTURE STORM SUMMARIES WILL BE ISSUED AS
REQUIRED OVER THE COURSE OF THE COMING WEEKS.
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TORNADO LOCATION/PATH DAMAGE OVERVIEW
TORNADO 1 14 KM SW OF DURHAM TO MARKDALE F2 TORNADO DAMAGE
(ROUGHLY 36 KM) (SIGNIFICANT HOUSE
+ TRAILER DAMAGE,
TREES DOWN)
TORNADO 2 FROM SOUTH OF THORNBURY TO THE F2 TORNADO DAMAGE
SOUTHEAST OF THORNBURY (MANY TREES SNAPPED,
(INTERMITTENT DAMAGE PATH OF GEORGIAN PEAKS SUSTAINED
OF 9 KM) DAMAGE, ROOFS REMOVED,
HOMES DAMAGED)
TORNADO 3 WOODBRIDGE (SOUTHWESTERN F2 TORNADO DAMAGE
VAUGHAN) (DOZENS OF HOMES
(3.5 KM LONG & 100 METRES WIDE) SIGNIFICANTLY DAMAGED,
TREES DOWN, CARS FLIPPED)
TORNADO 4 MAPLE (NORTHEASTERN VAUGHAN) F2 TORNADO DAMAGE
(2.7 KM LONG & 100 METRES WIDE) (DOZENS OF HOMES
SIGNIFICANTLY DAMAGED,
TREES DOWN)
TORNADO 5 NEWMARKET AREA F1 TORNADO DAMAGE
(HOCKEY ARENA ALMOST
DEMOLISHED, ROYAL
CANADIAN RIDING ACADEMY
SUSTAINED DAMAGE)
TORNADO 6 GRAVENHURST AREA F0 TORNADO DAMAGE
(PATH ABOUT 10 KM LONG (SHALLOW ROOTED
AND UP TO 900 METRES WIDE) TREES DOWN)
TORNADO 7 MILTON F1 TORNADO DAMAGE
(LIGHT STANDARDS DOWN,
ROOF DAMAGE OF MEDICAL
CENTRE AND NEARBY HOTEL,
TREES AND FENCES DOWN,
MINOR HOME DAMAGE)
TORNADO 8 HALIBURTON FOREST AND WILDLIFE F1 TORNADO DAMAGE (VERY
CENTRE(NORTHWEST OF HALIBURTON) LARGE SWATH OF TREES
DAMAGED)
TORNADO 9 REDSTONE LAKE F0 TORNADO DAMAGE
(MINOR ROOF DAMAGE)
TORNADO 10 NEW LOWELL TO EDENVALE F1 TORNADO DAMAGE
(WEST OF BARRIE) (TWO ROOFS PARTIALLY
(PATH 12.6 KM LONG) REMOVED, FARM SHED
COLLAPSED, 1000 POUND
TRAILER MOVED 300 FT)
TORNADO 11 ARNSTEIN AREA F1 TORNADO DAMAGE
WATERSPOUT/TORNADO
SIGHTINGS (LARGE SWATH OF
TREE DAMAGE, SHED MOVED,
MINOR HOUSE DAMAGE)
TORNADO 12 BANCROFT/CARLOW MAYO AREA F1 TORNADO DAMAGE
(SE OF BANCROFT) FUNNEL CLOUD SIGHTING
(LARGE AREAS OF TREE
DAMAGE)
TORNADO 13 RICE LAKE F1 TORNADO DAMAGE
(SE OF PETERBOROUGH) (ROOF AND TREE DAMAGE,
(PATH ABOUT 12 KM LONG) CAR MOVED)
TORNADO 14 BUCKSHOT LAKE F1 TORNADO DAMAGE
(NW OF PLEVNA) (TREES DOWN AND COTTAGE
(1.2 KM LONG & 400 METRES WIDE) DAMAGED)
TORNADO 15 DOLLARS LAKE F0 TORNADO DAMAGE
(NE OF BRITT) (TREES DOWN)
TORNADO 16 MOONSTONE F0 TORNADO DAMAGE
(NW OF ORILLIA) TORNADO SIGHTINGS
(PATH ABOUT 3 KM LONG) (TREES DOWN, COTTAGES/
HOMES MINOR DAMAGE)
TORNADO 17 RIL LAKE F1 TORNADO DAMAGE
(SE OF HUNTSVILLE) (NUMEROUS TREES DOWN)
TORNADO 18 NORTHEAST OF ORONO F0 TORNADO DAMAGE
(APPROX. 25 KM EAST OF OSHAWA) (SOME TREE AND MINOR
(PATH APPROX. 3.5 KM LONG) BARN DAMAGE)
END/OSPC