Weather summary for all of Southern Ontario and
The national Capital region
Issued by Environment Canada Toronto at 5:59 AM EDT Friday 21 August
2009.

 A severe thunderstorm outbreak over Southern Ontario
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==weather event discussion==

A line of severe thunderstorms roared eastward across southern and
Central Ontario Thursday afternoon and evening. There were numerous
reports of torrential downpours intense lightning and funnel clouds
from this line.  In the gta rainfall amounts out of this line was on
average reported around 30 mm.

Reports of severe or near severe weather events and/or damage
received by Environment Canada as of 2.00 AM are found in the table
below.

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Date
Time(lcl)       location        event description

1:00 PM         Sarnia          trees uprooted. Debris on lakeshore
                                Rd .

4:15 PM         township of     roof ripped of the centre of home
                Durham          hardware building.
                                Large trees down.
                                Siding, eaves torn from the sides of
                                Homes opposite in direction of the
                                Storm.
                                Trailer overturned.

4:40 PM         Thornbury/      tornado sightings, trees and
                Craigleith      power lines down.

5:10 PM         Markdale        many trees and power lines down.

5:39 PM         London          trees down, high winds.

6:15 PM         401 west of     pea sized hail.
                Milton

6:15 PM         Vaughan         tornado sighted near Vaughan mills
                                Shopping centre.

6:17 PM         Newmarket       cars flipped over.
                Davis dr/Hwy 48

6:30 PM         Davis dr/mccowan house damaged.

6:30 PM         arnstein/       swath of trees down in woods
                Sw of north     behind home.
                Bay

6:45 PM         Maple           funnel cloud observed.
                N of Major
                Mackenzie

6:50 PM         Woodbridge      many houses damaged, cars flipped,
                                Trees down everywhere.

6:57 PM         North Bay/      waterspout sighting. Moved over land.
                Lake nippissing

7:15 PM         North Bay       funnel cloud to the nw.

7:16 PM         Gravenhurst     trees uprooted. Debris.

7:20 PM         east gwillimbury barn destroyed.

7:22 PM         waterdown       30 mm rain.

7:44 PM         stouffville     funnel cloud sighted.

7:44 PM         Orillia         trees uprooted. Flooding on
                                Sideroads.