A winter storm is sweeping across southern Ontario, prompting multiple watches and warnings due to treacherous conditions. Blowing snow is creating near-zero visibility on roadways, putting travelers at risk.

"Blizzard warnings remain in effect for midwestern Ontario, including northern Huron County, southern Bruce County, and southern Grey areas," confirmed Julie Atchison, a meteorologist from CTV News London. The snowfall intensity in these regions is alarming, with rates reaching between five to ten centimeters per hour. With strong winds contributing to hazardous driving conditions, it is advised to avoid unnecessary travel.

Some areas can expect staggering snow accumulations, with forecasts predicting totals ranging from 40 to 80 centimeters as intense lake-effect snow squalls move in throughout the afternoon and evening.

As we look ahead to Friday, the weather will bring a brief reprieve with a mix of sun and clouds, although flurries may still linger. Temperatures are expected to remain frigid; for instance, in London, the high will hover around -7°C, with wind chills making it feel closer to -18°C.

Here’s what to expect in the London area:

Today:

A mix of sun and cloud, with a 40% chance of flurries. Winds from the west at 30 km/h, gusting up to 50 km/h. High of -7°C, with wind chill near -18°C.

Tonight:

Partly cloudy with a 40% chance of flurries. Winds will diminish, coming from the west at 20 km/h, gusting to 40 km/h initially and dropping to lighter speeds overnight. Low of -12°C with wind chill near -19°C.

Friday:

Transitioning to more sunshine, with flurries possible early in the morning. Winds will be lighter at up to 15 km/h. High temperature expected to be -5°C, with wind chill effects feeling like -18°C in the morning and -7°C by the afternoon.

Saturday:

Expect cloudy skies with a high around 0°C.

Sunday:

Cloud cover persists with a 60% chance of showers, and highs reaching 6°C.

Stay safe and be prepared for these winter weather challenges. Make sure to equip your vehicle with winter emergency supplies, and if you can, stay cozy indoors while the snow falls!