Snow squalls off Lake Manitoba and Lake Winnipeg made for a slow and slippery drive in parts of southern Manitoba on Tuesday.

Snow west of Winnipeg

Snow slams into parts of Manitoba, just west of Winnipeg in the Headingley area, on Tuesday. (Sara Calnek/CBC)

They were caused by cold air colliding with relatively warm lake temperatures. The squalls coming off Lake Manitoba are affecting the Trans-Canada Highway near MacGregor and Portage la Prairie.

"Oh, I'm just tickled pink to see all of this snow," said Clint Brockelbank, a truck driver who is hauling cattle from Edmonton.

Brockelbank said he traded off with his other driver overnight and spotted snow on the ground when he woke up on Tuesday.

"I sat up on the side of the bunk there, in the bed, and I looked out the window and I said, 'What's this stuff?!'" he laughed.

But the fresh layer snow made for a white-knuckle drive for some motorists on the Trans-Canada Highway.

Snow sign

Signs at some businesses in Headingley were a little difficult to read on Tuesday as blowing snow began to cover them up. (Sara Calnek/CBC)

For example, a truck was seen dangling on the side of an overpass near Portage la Prairie, while another truck rolled in the ditch east of the city.

The latter incident sent four people to hospital with minor injuries.

Manitoba Infrastructure urged drivers on Tuesday to keep their speed down on the icy Portage bypass.

Meanwhile, some outdoor workers did not expect to see snow already.

"I looked outside and I thought, 'Ah, winter's here.' It's a little early, but what can you do?" said Michael Ducharme, who was working with a highway construction crew.

"It could be a long winter. Yeah, we could be in for it this year."

Parts of Manitoba could see upwards of 15 centimetres of snow by day's end, but it probably won't stick around. Snow usually starts staying on the ground in Manitoba around Nov. 20.