CANADA WATCHING... ==discussion==

A low pressure system from Colorado is expected to track towards the
Great Lakes and will rapidly intensify into a significant fall storm
as it heads towards Lake Superior later on Sunday. Its associated
cold front is forecast to reach Southwestern Ontario late Sunday
afternoon then blast east across the remainder of the regions Sunday
night.

In advance of this fall storm, southerly winds will continue to pump
in mild air from the Southern United States. Hence fair weather under
various blends of sun and cloud along with mild temperatures are
expected today. On Sunday, stronger southerly winds will help
temperatures to rise well into the mid teens, with a few locales such
as Niagara and Windsor possibly getting into the upper teens. Showers
are likely Sunday, with many areas receiving a total of 15 to 25 mm
thanks to tropical moisture coming up from the Gulf of Mexico.
However there may be some rain-free periods of a couple hours
As well.

Very strong and gusty southwesterly winds are expected to herald the
arrival of the strong cold front late on Sunday. Thunderstorms may
form along and ahead of the cold front. Some of these thunderstorms
may be severe with damaging winds the main threat, especially for
Southwestern Ontario.

In the wake of the cold front, very strong winds will persist into
Monday with much colder air from the Arctic expected to blast in from
the northwest in the wake of the front by Monday night. There is
potential for snow squalls by Tuesday in the snow belt regions to the
southeast of Lake Huron and Georgian Bay as winter roars in with a
vengeance.

Environment Canada will monitor this developing situation closely.


The public is advised to monitor future forecasts and warnings as
warnings may be required or extended.

Please monitor the latest forecasts and warnings from Environment
Canada at www.weatheroffice.gc.ca