Special weather statement
Updated by Environment Canada
At 6:02 AM EST Tuesday 17 January 2012.
———————————————————————
Special weather statement for:
=new= City of Toronto
=new= Windsor – Essex – Chatham-Kent
=new= Sarnia – Lambton
=new= Elgin
=new= London – Middlesex
=new= Simcoe – Delhi – Norfolk
=new= Dunnville – Caledonia – Haldimand
=new= Oxford – Brant
=new= Niagara
=new= City of Hamilton
=new= Halton – Peel
=new= York – Durham
=new= Huron – Perth
=new= Waterloo – Wellington
=new= Belleville – Quinte – Northumberland
=new= Kingston – Prince Edward
Dufferin – Innisfil
Grey – Bruce
Barrie – Orillia – Midland
Peterborough – Kawartha Lakes
Stirling – Tweed – South Frontenac
Bancroft – Bon Echo Park
Brockville – Leeds and Grenville
Port Carling – Port Severn
Bracebridge – Gravenhurst
Haliburton – Minden – Southern Haliburton County.

Patchy dense fog over areas near the Lower Great Lakes.
Mixed precipitation over northern sections.
Sharp temperature drop to below freezing late this afternoon or evening.

———————————————————————
Special weather statement ended for:
Cornwall – Morrisburg
Smiths Falls – Lanark – Sharbot Lake
Town of Parry Sound – Rosseau – Killbear Park
Huntsville – Baysville.

———————————————————————
==discussion==

A deepening low pressure system over southern lower Michigan will reach Southern Ontario near the Sarnia area this morning then track northeast to between Toronto and Barrie by this evening. This low is then expected to keep moving across Eastern Ontario then pass over the Ottawa area into Southern Quebec tonight.

Milder air has arrived across Southern Ontario accompanied by a general 10 to 20 mm rainfall which is expected today. An isolated thunderstorm is also possible across Southwestern Ontario as the low pressure system gets close. Fog patches have also developed in the mild air and visibility may occasionally drop to a couple hundred metres or less in areas of dense fog this morning, resulting in difficult driving conditions. The fog should lift later today as the winds pick up from the southwest.

Further north, in areas extending from southern grey and Bruce counties across Simcoe County and Muskoka into the Kawarthas, temperatures will be struggling to stay just above the zero degree mark. As a result various mixtures of wet snow, rain, ice pellets and even some brief freezing rain will fall today as the low passes today. This mixed precipitation may cause untreated roads to become slippery at times. Making travelling conditions difficult.

As the low pressure area passes by later today, it will drag a sharp Arctic cold front into Southern Ontario beginning later this afternoon then into Eastern Ontario this evening. Temperatures will fall quite quickly to several degrees below freezing within about 2 to 3 hours after the front passes by. This may result in untreated surfaces quickly freezing and becoming locally icy and slippery, resulting in suddenly hazardous winter travelling conditions, especially if rain showers are falling shortly before the
Temperature drops below the freezing mark. There is some potential for a flash freeze in some areas later this afternoon over Southwestern Ontario and this evening in areas further east, and Environment Canada is closely monitoring this situation as a result.

In areas extending from the Bruce Peninsula across Parry Sound to Ottawa and Brockville and northeast, snowfall, winter storm and freezing rain warnings are in effect today. Travel into these Regions is not recommended.

Please monitor the latest forecasts and warnings from Environment Canada at WWW.WEATHEROFFICE.GC.CA.

UPDATE – 5:10 AM EST 2012-01-13

Brockville – Leeds and Grenville
SmithsFalls – Lanrk -Sharbot Lake
City of Ottawa
Prescott and Russell
Cornwall- Morrisburg

Patchy freezing rain continues this morning.

Periods of freezing rain will continue over Eastern Ontario as a low pressure area tracks east across the district and becomes absorbed in a new low pressure system forecast to track northeast across New York state into Southeastern Quebec later today. Hence the freezing rain, freezing drizzle and ice pellets will change over to all snow by this afternoon with a general snowfall of 5-10 cm expected, except in the St Lawrence Valley where snowfall amounts of 10 to possibly 15 cm are expected by this evening.

The snow will end tonight as the low pressure system moves away to the northeast.

Ice will continue to accumulate on untreated surfaces. Travellers are advised to exercise extreme caution as due to hazardous travelling conditions from icy and slippery surfaces, which may also become snow covered this afternoon.

———————————————————————

Special weather statement
Updated by Environment Canada
At 6:26 AM EST Friday 13 January 2012.
———————————————————————
Special weather statement for:
=new= City of Toronto
=new= Windsor – Essex – Chatham-Kent
=new= Sarnia – Lambton
=new= Elgin
=new= Oxford – Brant
=new= City of Hamilton
=new= Halton – Peel
=new= York – Durham
=new= Waterloo – Wellington
=new= Dufferin – Innisfil
=new= Belleville – Quinte – Northumberland
=new= Kingston – Prince Edward
London – Middlesex
Simcoe – Delhi – Norfolk
Dunnville – Caledonia – Haldimand
Niagara
Huron – Perth
Grey – Bruce
Barrie – Orillia – Midland.

A sudden return to winter.

———————————————————————
==discussion==
Much colder Arctic air blasting into the regions in the wake of a low pressure area moving into Southeastern Quebec will generate lake effect flurries today and tonight. A very strong southwesterly flow is bringing flurries heavy at times off of Lake Erie into the Niagara Peninsula and into regions near the shore of Lake Erie as far west as
the Long Point area. A quick 2 to 5 cm of snow is expected by this afternoon with locally higher amounts of 5 to 10 cm especially in the Fort Erie area. As the winds become more westerly this afternoon the lake effect snow will drift southeast of the area.

Meanwhile as winds become more northwesterly off of Lake Huron and Southern Georgian Bay this afternoon, flurries will become heavy at times and will persist for most of tonight. Snowfall amounts will likely be in the 5 cm range but locally higher amounts of 10 to 15 cm
are possible across Huron, Perth, Oxford and Middlesex counties by Saturday morning. There is a risk of brief snow squalls forming tonight and snow squall watches or warnings may be issued if necessary.

Further inland, snowfall amounts will be limited to 1-3 cm for most areas today. However with the strong and gusty winds and Temperatures which are several degrees below freezing, motorists should be prepared for difficult winter driving conditions. The strong and gusty winds will whip up the freshly fallen snow resulting in reduced visibility from blowing snow in exposed Areas. Motorists should be prepared for locally hazardous winter driving conditions from blowing snow and accumulating snow on untreated roads.

The lake effect snow will diminish Saturday as the strong winds subside thanks to a high pressure ridge moving in from the west.

Please monitor the latest forecasts and warnings from Environment Canada at WWW.WEATHEROFFICE.GC.CA.

———————————————————————
==discussion==
A sharp cold front will blast east across Southern Ontario this afternoon and evening heralding a sudden end to the latest mild Spell being experienced across the region. Strong west to southwesterly winds gusting to 70 or 80 km/h are expected to Suddenly develop by late this afternoon as the front goes through.

Winds near the shore of Eastern Lake Erie will be even stronger with 100 km/h gusts possible this evening and overnight. Storm surge and high waves are expected to raise water level along the Eastern Lake Erie shores from late this evening to the overnight hours.
Picton and Sandbanks park areas along the Lake Ontario shores will see gusts up to 100 km/h overnight into Monday morning. Hence wind warnings are in effect for those areas.

Lake effect flurries and snow squalls are expected to develop quite quickly in areas to the southeast of Lake Huron and Georgian Bay tonight, and will then persist into Monday. Snow squall watches have been issued for regions extending from Parry Sound and Muskoka across
Barrie and Owen Sound to the Stratford and London areas. Regions further inland from Lake Huron and Georgian Bay will receive flurries. In locales where enough fresh snow falls, some blowing snow may become an issue overnight and Monday. Hence driving conditions will deteriorate beginning tonight and motorists should be prepared for sudden low visibility in flurries and blowing snow.

Please monitor the latest forecasts and warnings from Environment Canada at WWW.WEATHEROFFICE.GC.CA.

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

City of Toronto
London – Middlesex
Grey-Bruce
Halton – Peel
York – Durham
Waterloo – Wellington
Dufferin – Innisfil
Grey – Bruce
Barrie – Orillia – Midland
Belleville – Quinte – Northumberland
Kingston – Prince Edward
Stirling – Tweed – South Frontenac
Bancroft – Bon Echo Park
Brockville – Leeds and Grenville

Occasional freezing rain on the way.

An area of rain over lower Michigan is moving toward Southern Ontario. As temperatures are expected to be at or below the freezing mark over the regions, periods of freezing rain will occur.

The freezing rain will begin in the Kitchener Waterloo area late this afternoon, the greater Toronto area near the supper hour, and then spread northeastward to reach Eastern Ontario by late evening.

Amounts will be generally in the 3 to 6 mm range.

The boundary between the freezing rain and plain rain is expected to lie from the Waterloo Wellington area through Halton Peel and Toronto.

The freezing rain will taper to patchy drizzle or freezing drizzle early Saturday.

A variety of precipitation for Southern Ontario.

———————————————————————
==discussion==
A complex low pressure system will bring a variety of precipitation
to Southern Ontario over the next two days.

Over Southwestern Ontario temperatures will be just above the
freezing mark tonight with some patchy drizzle. More organized rain
is forecast to redevelop in this area on Friday.

In the Toronto area, a stationary front lies directly over the city,
it appears milder air will remain just south of Toronto overnight or
hug the shoreline. Thus, the mercury will struggle to rise above the
freezing mark with some light flurries and freezing drizzle expected
in the overnight hours. Milder temperatures and some rain is
Forecast for Friday afternoon and Friday night.

For areas north and east of Toronto, including Peterborough,
Belleville, and Kingston, snow is expected to continue tonight
although accumulations will not be significant.

East of Georgian Bay to the Ottawa Valley, periods of generally light
snow are expected to develop overnight into early Friday morning.
There will be the risk for ice pellets and freezing rain Friday
night.

For the St Lawrence Valley, light snow is expected overnight and
Friday morning. A mix of ice pellets freezing rain and snow will
develop late Friday then end Saturday morning.

On Saturday, new years eve, once the morning precipitation ends in
Eastern Ontario generally dry weather is expected across all regions.
Sunday, new years day, will see mild conditions with a few showers,
followed by cold northwest winds and localized flurries Sunday night.

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

Storm Reflectivity at 7:45 AM Dec 27, 2011. Precipitation typed - pink - projected freezing rain, broad area of blue around Ft Wayne Ind.(lower left) - projected snow. "snowflakes/raindrops" - METAR( airports) reporting stations, as to type of precip. EWR image (c) EWR 2011

Special weather statement
Updated by Environment Canada
At 4:42 AM EST Tuesday 27 December 2011.
———————————————————————
Special weather statement for:
City of Toronto
Windsor – Essex – Chatham-Kent
Sarnia – Lambton
Elgin
London – Middlesex
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
Smiths Falls – Lanark – Sharbot Lake
Parry Sound – Muskoka
Haliburton
Renfrew – Pembroke – Barry’s Bay
Algonquin
Burk’s Falls – Bayfield Inlet.

Mixed precipitation today, significant snowfall and a possible flash
freeze tonight.

———————————————————————
A winter storm warning with snow >15cm is in effect for these regions:

Brockville – Leeds and Grenville
City of Ottawa
Gatineau
Prescott and Russell
Cornwall – Morrisburg.

———————————————————————
==discussion==
A developing low over Kentucky will track northeast along
The Appalachians today spreading a large area of precipitation into
Southern Ontario in the morning and into Eastern Ontario in the
afternoon. The precipitation will be a mix of rain and wet snow with
temperatures in most localities remaining above zero. The majority
Of the precipitation will fall as rain for communities along the
shores of Lake Erie and Lake Ontario where little if any
Accumulation is expected. For the remaining regions, a sloppy
accumulation of 2 to 4 cm is likely with slightly higher amounts
possible over the higher terrain of the Dundalk Highlands, Niagara
Escarpment and Oak Ridges moraine.

This low will rapidly intensify tonight bringing a threat of a
Heavy snowfall to Extreme Eastern Ontario. A snowfall warning has
been issued for these regions and includes Ottawa, Cornwall and
Brockville. For regions just west of this watch area and east of a
line from Cobourg to Algonquin Park, an additional 5 to 10 cm of snow
is possible tonight.

Another concern with this system is an Arctic cold front that will
cross southern and Eastern Ontario tonight. Much colder air
Behind the front means that temperatures will drop sharply from near
zero to well below freezing in a matter of hours. At the same time
all of the falling precipitation or residual moisture may quickly
freeze on untreated surfaces like roads and sidewalks making for
hazardous travelling conditions.

Please monitor the latest forecasts and warnings from Environment
Canada at WWW.WEATHEROFFICE.GC.CA

Freezing rain warning for

Stirling – Tweed – South Frontenac
Renfrew – Pembroke – Barry’s Bay
Smith’s Falls – Lanark – Sharbot Lake
City of Ottawa
Brockville – Leeds and Grenville
Prescott and Russell
Cornwall – Morrisburg

Patchy freezing rain through the evening hours.

Patchy freezing rain continues over parts of Eastern Ontario and is expected to persist intermittently into the evening hours.

The precipitation will move east of the regions by about midnight, possibly changing briefly to snow before ending.

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

———————————————————————
==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.

————————————————————-
==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.

————————————————————-
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

A slow moving low pressure system will give heavy rain to southern
regions and a wintery mix including freezing rain east of Georgian
Bay.

———————————————————————
Special weather statement ended for:
Windsor – Essex – Chatham-Kent
Sarnia – Lambton
Elgin
London – Middlesex
Parry Sound – Muskoka
Haliburton
Barry’s Bay – Killaloe
Petawawa – Pembroke – Cobden
Algonquin
Burk’s Falls – Bayfield Inlet.

Please refer to the warning bulletins for these regions for more
details.

———————————————————————
==discussion== a slow moving and moisture laden low pressure system
over Kentucky will move into Ohio on Tuesday, bringing a large and
well organized area of precipitation with it. Rain ahead of this
disturbance will spread into Southern Ontario this evening and into
Eastern Ontario overnight.

General rainfall amounts of 20 to 40 mm are expected across much of
the district through Tuesday and into Tuesday night. It is quite
possible that local rainfall amounts may reach 50 mm in many of
These regions as well. Rainfall amounts of 50 mm or more are
Expected in areas from London and Sarnia and southwest where
Rainfall warnings are in effect.

Brief freezing rain is possible tonight over northern sections,
With freezing rain likely along and north of a line from Muskoka to
Pembroke where freezing rain warnings are in effect.

As the low passes by over the Lower Great Lakes Tuesday night into
Southern Quebec by Wednesday morning, rain may change over to wet
snow briefly across many parts of Southern Ontario as colder air
filters in from the northwest.

Motorists should be prepared for poor driving conditions as periods
of heavier rain will result in reduced visibility tonight and Tuesday
across much of southern and Eastern Ontario. 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.

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

END/OSPC

WOCN12 CWTO 282106
Special weather statement
Updated by Environment Canada
At 4:06 PM EST Monday 28 November 2011.
———————————————————————
Special weather statement for:
=new= Greater Sudbury and vicinity
=new= Kirkland Lake – New Liskeard – Temagami.

Snow possible especially Tuesday night.

———————————————————————
Special weather statement ended for:
North Bay – West Nipissing.

Please refer to the winter storm watch which has been issued for
The North Bay area.

———————————————————————
==discussion==

A low pressure system forecast to track from Kentucky over the
Lower Great Lakes Tuesday into Southern Quebec by Wednesday will
spread snow into the districts by Tuesday evening. There is
Potential for accumulating snow across the Sudbury and Temagami
Areas especially Tuesday night where 5-10 cm are possible.

These regions will be very close to the northwest edge of the snow
shield from this disturbance. There remains some uncertainty as to
how far north into these regions the edge of the snow will get. This
will affect how much snow will fall over a particular locale.

Motorists should be prepared for deteriorating winter driving
conditions Tuesday night as the snow arrives.

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

End