Advance Weather

Heavy snow is expected for an hour or two before tapering to scattered flurries.

11:04 AM ET - Special Weather Statement in effect for Chatham-Kent, Elgin, London-Middlesex, Sarnia-Lambton and Windsor-Essex.

Snowfall rates of 2 to 4 cm per hour and reduced visibility in heavy snow is expected this morning.

10:24 AM ET - Snow continues to push through Southwestern Ontario. Some heavier snow (shown in the yellow) is moving through the #Chatham area.

Watch for snow covered and slippery road conditions. Travel with caution.

#ONwx

Temperatures in blue represent forecasted wind chill values.

More details: https://buff.ly/E4sMI7u

A Snow Squall Watch (Yellow Level) is in effect for the Bruce Peninsula, with some snow squalls expected tomorrow. Snowfall amounts up to 15 centimetres will be possible.

For Wednesday, some rain and snow is expected across much of the area. Uncertainty remains in amounts and timing.

Some brief snow will push across the region tomorrow, with less than 5 centimetres expected across the area.

The morning commute may be affected tomorrow due to the snow. Road conditions will likely become snow covered and slippery due to the cold temperatures.

Significantly reduced visibility in heavy snow and local blowing snow is expected.

#ONwx

8:46 PM ET - Snow Squall Watch (Yellow Level) in effect for Bruce Peninsula - Sauble Beach - Tobermory.

Snow squalls are likely to begin Tuesday morning and continuing into Tuesday evening.

Total snowfall amounts of 10 to 20 cm is expected, with locally higher amounts possible.

Details remain uncertain at this time.

Temperatures in blue represent forecasted wind chill values.

More details: https://buff.ly/aMuboia

Some quick moving snow appears likely for Saturday, and another round for Sunday. Accumulations will likely remain low, but slippery travel is possible.

Next week is expected to feature multiple clippers, likely bringing continuous chances at accumulating snow.

Friday will bring another chilly day to the region, with most areas seeing a mix of sun and cloud. A few flurries will be around in Central Ontario, with some light snow in the Bruce Peninsula.

Some snow remains in the forecast for the foreseeable future.

More details: https://buff.ly/qj8aAmJ

This will likely bring a quick burst of snow, along with strong wind gusts. Temperatures will drop behind the front.

Looking ahead to the rest of the week,Friday morning will likely bring wind chills near -20ºC for many areas.

Temperatures in blue represent forecasted wind chill values.

Wednesday will bring a mix of sun and cloud across the area, with the Bruce Peninsula and portions of Central Ontario seeing flurries and snow squalls.

Some snow will be possible across the area tomorrow evening as an arctic front passes through the region.

More details: https://buff.ly/Pl2GUX9

Snow Squall Watches (Yellow level) are in effect as well.

Some snow will be possible late tomorrow into early Tuesday morning, mainly for areas along Lake Erie.

Temperatures in blue represent forecasted wind chill values.

Welcome to December and Meteorological Winter!

A chilly day is expected across the region tomorrow, with high temperatures below the freezing mark.

Snow Squall Warnings (Yellow level) are in effect tonight. Travel with caution in affected areas. Snowfall of 10 to 20 centimetres is expected.

Special Weather Statement in effect for Chatham-Kent, Elgin County and Windsor-Essex for 10 centimetres to possibly 15 centimetres.

Travel conditions will deteriorate tonight. Environment Canada states lake effect flurries are likely Sunday with the potential for snow squalls.

4:35 PM ET - Snowfall Warnings (Yellow Level) have been issued for much of Southern Ontario. Environment Canada states 10 to 20 centimetres is likely for many areas.

Some strong wind gusts and lake effect snow are expected Sunday.

Areas along Lake Ontario will see Trace to 5 centimetres of snow. Much of the Highway 401 corridor will see 5 to 10 centimetres, while Midwestern and Central Ontario see 10 to 15 centimetres.

Snow will begin wrapping up Sunday morning.

#ONwx Accumulating snow is expected across Southern Ontario tomorrow into Sunday.

Snow will likely begin breaking out over Southwestern Ontario during the afternoon to evening hours.

Road conditions will likely become snow covered and slippery quickly.

6:37 AM ET - Multiple weather alerts remain in effect this morning (Image 1) including Snow Squall Warnings (Orange and Yellow levels).

Many roads in Midwestern Ontario are snow packed this morning. Snow squalls will continue through the day today before weakening.

#ONwx

Current data suggests poor visibility and heavy snowfall will be possible with this system, and the snow will continue into Sunday. Stay tuned for further updates.

Some rain may mix in and reduce snowfall totals, however some uncertainty remains where and if this will occur.

Some of the latest high resolution data coming in shows snow moving into Southwestern Ontario during the evening hours on Saturday. The timing also remains uncertain at this time.

Some uncertainty still remains at this time, but it appears that this system will bring another chance for snow to the area. This time, it appears that the snowfall would be more widespread.

❄️ LOOK AHEAD: More Snow Likely This Weekend

Once the snow squalls wrap up late Friday into early Saturday morning, focus will shift to another system that is expected to impact the region Saturday afternoon into Sunday.

9:55 PM ET - Here is a road conditions update for Midwestern #Ontario.

Data from 511 Ontario/MTO reports many highways are snow covered, many with fair to poor visibility.

Travel conditions will deteriorate tonight.

#ONwx

Snow squalls are expected to weaken late tomorrow into Saturday morning.

We are now beginning to track a system that may bring snow to the area Saturday into Sunday. Stay tuned for more updates.

More details: https://buff.ly/9ZiRmNv

Avoid travel if possible. Snow Squall Watches (Yellow level) remain in effect, as well as Special Weather Statements.

The snow squalls will shift throughout the day tomorrow. Poor road conditions and poor visibility are expected again tomorrow.