Fox News Weather Center

LIVE: Dangerous Snow Squalls Precede New England Blizzard

Blinding snow squalls have led to dangerous travel conditions across the Ohio Valley and Northeast this Valentine's Day.

Numerous accidents on major thoroughfares have already been reported across parts of Indiana, Ohio, western New York and Southern Ontario. Speed limit reductions have also been put in effect.

"Motorists should be alert for rapidly changing weather conditions that include a sudden drop in visibility, strong winds and a rapid freeze-up," Senior Meteorologist Alex Sosnowski said.

In New England, the tranquil conditions with spotty light snow from Saturday afternoon will transition to dangerous travel as winds and snow increase with extensive blowing and drifting of snow and plummeting temperatures later at night, Sosnowski added.

UPDATES: (All times are listed in EST)

3:11 p.m. EST Saturday:

2:47 p.m. EST Saturday: "A line of blinding snow squalls continues to push eastward through New York, Pennsylvania, West Virginia and Maryland," Senior MEteorolgosit Alex Sosnowski said.

2:40 p.m. EST Saturday: Nearly 450 flights canceled, mostly out of Boston, New York and Philadelphia airports.

2:37 p.m. EST Saturday: Speed limit has been reduced to 45 mph on I-80 from Ohio border to Exit 161 (Bellefonte) due to snow squalls. Also on I-79 from I-80 northward to I-90, and in I-90 in Pennsylvania.