ESSEX COUNTY, Ont. -- Police continue to urge motorists to drive with caution and patience as snow plows and salters clear roads from a record snowfall.

Environment Canada reports between 15 and 20 centimetres of snow fell on Monday, which is a new record for Nov. 11.

Essex County OPP say officers responded to more than 20 collisions between 7 a.m. and 7 p.m. during the first significant snowfall on Monday.

Of note -- Highway 401 at the Highway 3 interchange required the closing of all eastbound lanes for four hours, until 11:30 p.m. Monday night, due to a jackknifed tractor trailer.

Fortunately, no serious injuries were reported in any of the weather-related collisions.

Police say they continue to respond to numerous collisions on Tuesday but again, no serious injuries are reported.