WOCN11 CWTO 292144
Special weather statement
Updated by Environment Canada
At 4:44 PM EST Tuesday 29 November 2011.
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Special weather statement for:
=new= Windsor – Essex – Chatham-Kent
=new= Sarnia – Lambton
=new= Elgin
=new= London – Middlesex
City of Toronto
Simcoe – Delhi – Norfolk
Dunnville – Caledonia – Haldimand
Oxford – Brant
Niagara
City of Hamilton
Halton – Peel
York – Durham
Huron – Perth
Waterloo – Wellington
Dufferin – Innisfil
Grey – Bruce
Barrie – Orillia – Midland
Belleville – Quinte – Northumberland
Kingston – Prince Edward
Peterborough – Kawartha Lakes
Stirling – Tweed – South Frontenac
Bancroft – Bon Echo Park
Brockville – Leeds and Grenville
City of Ottawa
Gatineau
Prescott and Russell
Cornwall – Morrisburg
Smiths Falls – Lanark – Sharbot Lake
Renfrew – Arnprior – Calabogie.

Heaviest rain moving into Eastern Ontario.
A changeover at least briefly to snow is expected before the
precipitation ends Wednesday.

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==discussion==
A slow moving and moisture laden low pressure system near Erie
Pennsylvania will move over Lake Ontario into Southern Quebec by
Wednesday morning.

Most of the heavier rain has moved out of Southern Ontario into
Eastern Ontario where further rainfalls of 15 to 25 mm are
Expected tonight, bringing rainfall totals in many areas up to 40 mm
by morning. A rainfall warning for Sarnia and Lambton County remains
in effect but is expected to be ended by this evening.

Occasional rain or drizzle over Southern Ontario will change over
To wet snow by Wednesday morning before ending as the low moves away
over Quebec. Snowfall amounts will vary from 1 cm or less in regions
near Lake Erie and Ontario to a couple cm over northern parts of the
greater Toronto area across Kitchener and London to Windsor. Higher
amounts of 5 to 10 cm are expected near Lake Huron and Georgian Bay
where the cold air will get in a little sooner, resulting in an
earlier changeover from rain or mixed precipitation to snow.

Note that freezing rain is likely along and north of a line from
Muskoka to Pembroke where freezing rain warnings are in effect.

Motorists should be prepared for poor driving conditions as periods
of heavier rain will result in reduced visibility tonight.
Hazardous winter driving conditions are possible over northern
sections, and in areas east of Georgian Bay to Renfrew County where
freezing rain warnings are in effect. Difficult winter driving
conditions may spread into much of Southern Ontario as the snow
Moves in by Wednesday morning.

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

END/OSPC

AWCN11 CWTO 291847
Weather summary for all of Southern Ontario and the
National Capital Region issued by Environment Canada
At 1:47 PM EST Tuesday 29 November 2011.

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==weather event discussion==

A moisture laden low pressure area that originated over the
southeastern states and is tracking up near lakes Erie and Ontario
today has brought a large and well organized area of rain with it.
Freezing rain has appeared as expected over areas east of Northern
Georgian Bay into Algonquin Park.

Below are some unofficial total rain amounts as of 1.00 PM today
unless otherwise noted.

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Location rainfall amount (mm)

Windsor 59.4
Harrow 61.4
Sarnia 37.8
Thedford (S Grand Bend) 21.0 (as of 8 AM)
Goderich 23.2
Mount Forest 31.3
Ridgetown 65.0 (as of noon)
New Glasgow (se Rodney) 47.0
London 48.1
Tillsonburg 25.6 (as of 8 AM)
Dorchester 24.6 (as of 8 AM)
Delhi 42.2
Waterloo intl airport 36.3
Elora 32.7
Hamilton 36.2
Hamilton botanical gardens 33.4
Grimsby mountain 22.6 (as of 7 AM)
Toronto Pearson 29.4
Buttonville airport 27.8
Toronto Island 30.1
Toronto city 29.2
Oshawa 25.8
Collingwood 25.8
Barrie 24.6
Muskoka 24.1
Bancroft 23.9
Peterborough 24.6

This weather summary contains preliminary information
And may not constitute an official or final report.

END/OSPC

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