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2009 Storms of 2009 - specific weather events posted by date

 
 
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Old 08-25-2009, 02:42 PM
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Video Aug.20 - tornados across southern/central ontario

Aug.20 1 (F2) 5km SW of DURHAM to MARKDALE - Significant house and trailer damage, tree damage, etc.
2 (F2) S of THORNBURY to SE of THORNBURY -
3 (F2) WOODBRIDGE/VAUGHAN - several KM long, 50+ meters wide. Houses destroyed beyond repair, cars and trucks flipped upside down, hundreds of houses damaged.
4 (F1) NEWMARKET - hockey arena almost destroyed
5 (F0) GRAVENHURST - Path about 10km long and up to 1km wide
6 (F1) MILTON - damage to roofs
7 (F1) HALIBURTON - forest and wildlife damage, large swath of trees damaged
8 (F?) REDSTONE LAKE - roofs off, trees down in all directions and witnesses all reporting tornado
9 (F?) ARNSTEIN TO RESTOULE TO NORTH BAY - waterspout tornado
10 (F?) CARLOW MAYO area - large area of tree damage
11 (F?) TURNIFF (SE OF BANCROFT) - large swath of tree damage, hunting cabin damaged


AWCN11 CWTO 251345
WEATHER SUMMARY FOR ALL OF SOUTHERN ONTARIO AND
THE NATIONAL CAPITAL REGION
ISSUED BY ENVIRONMENT CANADA TORONTO AT 9:13 AM EDT TUESDAY 25
AUGUST 2009.
SUMMARY OF THE TORNADO OUTBREAK OVER ONTARIO ON AUGUST 20.
-------------------------------------------------------------
==WEATHER EVENT DISCUSSION==
..YET ANOTHER DAMAGE SURVEY TEAM HEADS OUT TO THE KENISIS LAKE AREA
NEAR HALIBURTON TODAY..
A TRIPLE BARRELLED SEVERE WEATHER OUTBREAK STRUCK ONTARIO LAST
THURSDAY.
SHORTLY AFTER NOON A SUPERCELL STORM DEVELOPED JUST SOUTH OF LAKE
HURON. THIS CELL TRACKED NORTHEASTWARD FOR A REMARKABLE 200 KM
PRODUCING THE DURHAM AND THORNBURY TORNADOES. THE STORM CELL
FINALLY WEAKENED OVER GEORGIAN BAY TOWARD EVENING.
AT THE SAME TIME A SQUALL LINE DEVELOPED OVER LOWER MICHIGAN THEN
TRACKED ACROSS SOUTHERN ONTARIO DURING THE AFTERNOON AND EVENING
HOURS. THIS FEATURE PRODUCED STRAIGHT LINE WIND DAMAGE TO SEVERAL
LOCALES FROM WINDSOR TO WELL NORTHEAST OF TORONTO AS WELL AS THE
DESTRUCTIVE VAUGHAN AND NEWMARKET TORNADOES.
FINALLY IN THE EARLY EVENING ISOLATED SUPERCELL STORMS TRACKED
TO THE EAST OF GEORGIAN BAY. ONE TRACKED NORTHEASTWARD TO PRODUCE A
PROBABLE TORNADO OVER THE AREA BETWEEN ARNSTEIN AND NORTH BAY AS
WELL AS A WATERSPOUT OVER LAKE NIPISSING.
ANOTHER TORNADO TRACKED THROUGH THE GRAVENHURST AREA BEFORE LIFTING.
IT APPEARS THIS STORM OR ONE NEAR IT PROBABLY SPAWNED A TORNADO THAT
WENT THROUGH THE REDSTONE LAKE AND KENNISIS LAKE DISTRICT. THIS
BRINGS THE TOTAL THUS FAR FOR THE AUGUST 20 STORMS TO 5 CONFIRMED
TORNADOES, 2 PROBABLE TORNADOES AND 1 POSSIBLE TORNADO.
THERE WAS ONE FATALITY WITH THE TORNADO IN THE SOUTH END OF DURHAM.
SEVERAL OF THE TORNADOES WERE RATED AS F2 DAMAGE ON THE FUJITA
SCALE. F2 DAMAGE IS EQUIVALENT TO WIND STRENGTH OF 180 TO 250 KM/H.
THE FOLLOWING IS A LIST OF TORNADOES AND ASSOCIATED DAMAGE ASSESSED
BY A TOTAL OF FIVE SEPARATE ENVIRONMENT CANADA STORM DAMAGE TEAMS.
-------------------------------------------------------------
DATE
TORNADO LOCATION/PATH DAMAGE OVERVIEW
TORNADO 1 5 KM SW OF DURHAM TO MARKDALE F2 TORNADO DAMAGE
(CONFIRMED) (ROUGHLY 20 KM) (SIGNIFICANT HOUSE
+ TRAILER DAMAGE,
TREES DOWN)
TORNADO 2 FROM SOUTH OF THORNBURY TO THE F2 TORNADO DAMAGE
(CONFIRMED) SOUTHEAST OF THORNBURY (PATH (MANY TREES SNAPPED,
LENGTH UNKNOWN) GEORGIAN PEAKS SUSTAINED
DAMAGE, ROOFS REMOVED,
HOMES DAMAGED)
TORNADO 3 WOODBRIDGE/VAUGHAN F2 TORNADO DAMAGE
(CONFIRMED) (SEVERAL KM LONG (HUNDREDS OF HOMES
+ 50 METRES WIDE) DAMAGED, TREES DOWN,
CARS FLIPPED)
TORNADO 4 NEWMARKET AREA F1 TORNADO DAMAGE
(CONFIRMED) (HOCKEY ARENA ALMOST
DEMOLISHED, ROYAL
CANADIAN RIDING ACADEMY
SUSTAINED DAMAGE)
TORNADO 5 GRAVENHURST AREA F0 TORNADO DAMAGE
(CONFIRMED) (PATH ABOUT 10 KM LONG (SHALLOW ROOTED
AND UP TO 1 KM WIDE) TREES DOWN)
TORNADO 6 MILTON F1 TORNADO DAMAGE
(CONFIRMED) (LIGHT STANDARDS DOWN,
ROOF DAMAGE OF MEDICAL
CENTRE AND NEARBY HOTEL,
TREES AND FENCES DOWN,
MINOR HOME DAMAGE)
TORNADO 7 ARNSTEIN TO RESTOULE TO NORTH WATERSPOUT/TORNADO
(PROBABLE) BAY (PATH LENGTH UNKNOWN AT SIGHTINGS (DAMAGE DETAILS
THIS TIME) UNCERTAIN AT THIS TIME)
TORNADO 8 REDSTONE LAKE / KENNISIS LAKE TORNADO SIGHTINGS (TREES
(PROBABLE) (NORTH OF HALIBURTON) DOWN/COTTAGES DAMAGED)
(INTENSITY UNCERTAIN AT
THIS TIME)
ENVIRONMENT CANADA CONTINUES TO EVALUATE THE DAMAGE FROM THE STORMS
AND WILL UPDATE THIS MESSAGE AS NECESSARY.
END/OSPC
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