Ontario...up to 25 cm of snow ...minus 20 deg C

Thursday morning's commute could be slower in parts of Ontario as a low-pressure system brings heavy, fluffy snowfall. Parts of the GTA and the 401 corridor could see accumulations of up to 25 cm. Weather alerts are also in place for snow squalls in some areas. This increase in snowfall is driven by a strengthening upper-level low tracking south of Lake Erie and Lake Ontario, enhancing snowfall rates and totals. Snowfall rates of 1-2 cm/h are expected for the GTA and parts of eastern Ontario overnight, continuing into early Thursday morning.

Blustery winds accompanying the system may lead to blowing and drifting snow, reducing visibility at times. Lake-enhanced and lake-effect snow squalls could create higher accumulations in snowbelt regions. Temperatures in southern Ontario will steadily drop throughout Wednesday as well. A significant cooldown is expected, with temperatures falling by 10-15°C between Wednesday and Thursday.

Overnight into Thursday, colder air will spread, bringing daytime highs in the minus double digits. Wind chills could make it feel closer to the -20s. Another surge of Arctic air is forecast to push south, keeping cold conditions entrenched well into next week. Arctic air will take hold next week, bringing lake-effect snowsqualls to snowbelt regions east and southeast of Lake Huron and Georgian Bay.

Environment Canada

@sgtdjones

White lady coming down all night tonite....yes minus 25C...indoors for me😋

@Narper

Snow totals of 10-20 cm are forecast for the GTA

10-25 cm is likely for regions north and east, including Ottawa and Montreal

Temperatures to fall through across southern Ontario, with wind chills in the -20s by Thursday morning

It has started already on the escarpment; big flakes made for snowball fights.You are north/east of Toronto...you will get blasted.

It's that darn windchill; it's minus 12°C already.

Active Alerts

Hamilton, ON

Orange Warning - Snowfall

Issued at Thu 7:53 AM Jan. 15

Issued by: Environment and Climate Change Canada

Description

Significant snowfall continues.

What:

Snowfall amounts of 20 to 30 cm. Temperature minus 20 deg C

Reduced visibility at times in heavy snow and local blowing snow.

When:

Continuing through this morning and tapering off late this afternoon.

Additional information:

A low-pressure system will continue to bring significant snowfall to much of southern Ontario. Very cold wind chills by this morning will add to the adverse weather conditions.

Travel will be hazardous. There may be a significant impact on rush hour traffic.

Environment Canada.

@sgtdjones

SOOOOOO.... what you're saying is........ it snows in the Winter in O.T? haha 😎

@sgtdjones

Lots of snow but light, dry and fluffy....but place cold no rass😀

@FunnyMan

SOOOOOO.... what you're saying is........ it snows in the Winter in O.T? haha

Nope, It snows in Canada 12 months of the year...😎

@Narper

We got 27 cm, not heavy snow, and diesel trucks wouldn't start.

Had to plug in block heaters for a few hours.

It was very cold, and staying for a few days with a -25°C windchill...bare skin frozen in 2 minutes. 😣

More snow tomorrow...