Almost 100 vehicles were involved in a snow squall-related pileup Thursday morning near Barrie, Ontario.
Three people were taken to the hospital, and Ontario Provincial Police told CTV News Barrie that Highway 400 would be closed most of the day as a result of the crash.
The crash occurred about 9 a.m. Thursday.
A snow squall, associated with the passage of an arctic cold front, moved through the area at the time of the crash, AccuWeather.com Canadian Weather Expert Brett Anderson said.
Visibility quickly dropped to less than 0.2 km (one-eighth of a mile) within a matter of minutes.
"It was like driving into a wall of white," Anderson said.
Temperatures were about -13 C (9 F) at the time of the squall with wind gusts up to 65 kph (40 mph).
"AccuWeather RealFeel® temperatures were about -25 to -35 C (-13 to -31 F). It was very cold," Anderson said.
The major pile-up punctuated a very busy day for provincial police.
OPP-stranded motorists urged to stay inside vehicle with 4-ways on. OPP are responding to many calls. Expect delays, We are responding.— OPP West (@OPP_WR) February 27, 2014
The Barrie-area crash was one of two large-scale crash scenes investigated by Ontario authorities. A 16-vehicle crash occurred about an hour before the Barrie crash, CTV News reported.
The crashes are rare for the Barrie area of Ontario because drivers are prepared for a large number of squalls each winter, Anderson said.
"A lot of those vehicles (in the Highway 400) have snow tires. It obviously caught people by surprise," he said. "People tend to slam on the brakes and slow down quickly, and it goes on from there."
A screenshot from CTV News Barrie shows part of a 96-vehicle pileup Thursday, Feb. 27, 2014, on Highway 400 near Barrie, Ontario.
Tropical Depression Two has formed in the Atlantic and could become the next tropical storm of the season by midweek.
Steamy air will return to the interior Northeast to the Ohio Valley this week, setting the stage for severe storms on Wednesday.
After a cool spell over the Detroit area, warmer air will return to the city for the new week.
Severe storms will fire up Tuesday afternoon and evening, threatening outdoor activities and travel for many.
Very warm and humid air will surge back across the mid-Atlantic and Northeast for the first half of the week, but the sticky air's presence will not last long.
With the recent heat fading away, more relief will greet the Northwest by midweek in the form of rain.
Atlantic Ocean (1498)
Christopher Columbus' third voyage. After leaving the Cape Verde Islands, the 4 ships drifted WSW in the equatorial current. "The wind stopped so suddenly and unexpectedly and the supervening heat was so excessive and immoderate that there was no one who dared go below after the casks of wine and water which burst, snapping the hoops of the pipes; the wheat burned like fire; the bacon and salted meat roasted and petrified."
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504 sheep were killed by one lightning bolt.
Waterbury, CT (1926)
105 degrees -- record high for state.