‘Intense snow squalls’ to wallop London, Ont. region Sunday

The London, Ont. region is battered by a snowsquall on Dec. 14, 2025. (Brent Lale/CTV News London)

Londoners have begun digging out after the Forest City and the surrounding area saw their third blast of winter in less than a week on Sunday.

According to Environment and Climate Change Canada, a yellow snow squall warning has been issued for the London region, with “intense snow squalls” continuing into the evening on Sunday.

The weather authority says total snowfall accumulations of 20 to 40 cm are expected, with locally higher amounts possible.

Potential hazards include zero visibility in areas of heavy snow and blowing snow.

The snowfall event began early Sunday morning as winds became northerly, leading to a “particularly strong snow squall” to develop off Lake Huron.

“Travel will likely be hazardous,” Environment Canada said. “Roads and walkways will likely be difficult to navigate due to accumulating snow.”

Sunday will also be bitterly cold, with sustained winds of 30 km/h and gusts of up to 50 km/h early in the afternoon. The daytime high will reach – 9C, however with the wind chill it will feel like – 15 in the afternoon.

Conditions are expected to improve come Sunday evening as the snow squalls off Lake Huron weaken. Environment Canada says another 5cm of snow will fall this evening.

A full list of areas under weather watches, warnings, and special weather statements can be found on the Environment Canada website.

Have a photo from Sunday’s winter storm you’d like us to see? Include your name and location, and send it to [e-mail].

Highway closure

As a result of Sunday’s snow squalls, OPP are warning the public of one major highway closure Sunday afternoon.

According to OPP West Region, Highway 402 westbound at between Glendon Drive is closed as of 3:08 p.m. for a two vehicle collision involving a snow plow and tractor trailer.

Injuries are unknown at this time.

Drivers are asked to find an alternate route in the meantime and to follow the directives of officers on scene.

Here’s a look at London’s long-range forecast

Sunday night: A few flurries ending near midnight then cloudy with 30 percent chance of flurries. Risk of snow squalls early this evening. Local blowing snow early this evening. Local amount 5 cm. Wind northwest 30 km/h gusting to 50. Temperature rising to minus 8 this evening then falling. Wind chill minus 15 this evening and minus 26 overnight.

Monday: Mainly cloudy. 40 percent chance of flurries early in the morning. A few flurries beginning in the morning. Local blowing snow late in the morning and in the afternoon. Local amount 2 to 4 cm. Wind southwest 40 km/h gusting to 60. High minus 6. Wind chill minus 20 in the morning and minus 15 in the afternoon. UV index 1 or low.

Tuesday: A mix of sun and cloud. High minus 2.

Wednesday: Cloudy with 40 percent chance of flurries or rain showers. High plus 3.

Thursday: Cloudy with 70 percent chance of rain. Windy. High plus 5.

Friday: A mix of sun and cloud. High minus 4.