Microburst event confirmed in Amherstburg

AWCN11 CWTO 251907
Weather summary for all of Southern Ontario and
The national Capital region
Issued by Environment Canada Toronto at 2:59 PM EDT Friday 25 June
2010.

Microburst event confirmed in Amherstburg area

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==weather event discussion==

The damage that occurred in a campground to the east of Amherstburg
around 10:50 PM on Wednesday June 23 has been determined to have been
caused by a microburst which is a very localized gust of damaging
winds. The damage to the campground included a camper trailer flipped
over and a large tent and small sheds being severely damaged. The
damage occurred in a localized area approximately 60 metres wide by
600 metres long. Based on the type of damage that occurred the winds
were estimated to be between 120 and 140 km/h which is the lower end
of the Fujita one range. The Fujita scale uses damage to estimate the
strength of winds in tornadoes and severe wind gusts and goes from
zero (weakest) to five (strongest).

Environment Canada earlier confirmed that a Fujita scale 2 tornado
(peak winds between 180 and 240 km/h) occurred in the Midland area
around 6:30 PM Wednesday evening. The tornado began in the rowntree
beach area west of Midland and ended just west of waubaushene for a
total length of approximately 25 km. The maximum width of damage was
around 300 metres. The most significant damage noted with this
tornado was numerous mobile homes severely damaged or destroyed in a
trailer park at the south end of the town of Midland. Damage outside
of the Midland area was intermittent.

A second tornado spawned from the same thunderstorm that moved over
the Midland area occurred at approximately 7:00 PM. This tornado
began around the Maple Valley area approximately 10 km west of
Washago and ended just east of Washago. This tornado was rated as a
Fujita scale one tornado (peak winds between 120 and 170 km/h). The
total length of the damage was approximately 12 km but was
intermittent in nature. The maximum width was approximately 60
metres. The most significant damage from this tornado was to farm
buildings (i.E. A barn and silo) and a garage.

With the confirmation of two tornadoes from Wednesday evening, the
total count of tornadoes for this year so far in Ontario stands at
four. Ontario normally gets around 11 tornadoes each season with the
summer severe weather season beginning in late April and ending in
early October.

Please note that this summary contains the observations at the time
of broadcast and does not constitute an official and final report of
the weather events or the high impact events attributed to the
weather events.

END/OSPC