TRURO - For the third Wednesday in a row, snow is expected to fall in Colchester County.
Cancellations: All evening classes have been cancelled on the Dalhousie Agricultural Campus however campus remains open.
Environment Canada has issued snowfall warnings for all parts of Colchester County, as well as most parts of the province.
A total snowfall of 15 to 20 centimetres is expected to fall Wednesday afternoon and evening as a low pressure system developing south of Long Island will move northeastward.
Snow is expected to start Wednesday morning over Western Nova Scotia and spread eastward through the afternoon. It's estimated to end late Wednesday evening or early Thursday morning.
Provincial officials say snow plow drivers are ready to roll as another winter storm approaches.
"We have hundreds of staff and more than 400 pieces of snow-clearing equipment ready," said Barb Baillie, executive director of maintenance and operations, Transportation and Infrastructure Renewal, in a news release. "We are maintaining our plowing standards during what has been a very busy and challenging season."
The department's standards are to have 100-series highways, trunk highways, and other high-traffic roads cleared within eight hours after a storm ends.
Provincial plow operators work 24-7 during a storm, plowing roads as a storm is blowing, but often can't make headway until the snow stops.
Secondary and other medium-volume roads must be cleared within 12 hours after a storm. Local roads, streets in residential areas and subdivisions, and gravel roads are cleared within 24 hours.
"It only makes sense to clear the busiest roads first," said Baillie. "If we're advised of a medical emergency through 911, we'll pull a plow off its regular route to assist emergency vehicles to get where they need to go."
The best thing drivers can do during a storm is stay off the roads, if possible, and let operators do their job. Road traffic packs snow, which turns to ice in colder temperatures, making the clean-up twice as difficult.
Nova Scotians can check provincial highways conditions at http://511.gov.ns.ca/map/en.html . The province's plowing standards are available at http://novascotia.ca/tran/winter/WinterMaintenanceStandards.pdf .