Environment Canada has issued a winter storm watch for Newfoundland's east coast for Saturday.
The area includes St. John's-metro and the Avalon Peninsula, Bonavista Peninsula, Burin Peninsula, Clarenville, Connaigre and Terra Nova regions.
Environment Canada says current guidance indicates that snow, heavy at times, will begin over the Burin and southern Avalon Peninsulas near noon on Saturday and spread northward. Total snowfall amounts near 15 to 20 cm are likely in some areas before snow tapers off on Saturday evening, with lesser amounts expected over more western and northern areas.
The weather office says there is still some uncertainty in the amount and location of the highest snowfall, and parts of the southern Avalon Peninsula may see rain mixing in with the snow in the evening.
Strong northeasterly winds will develop on Saturday evening and, combined with the freshly fallen snow, are likely to give poor visibilities in blowing snow.
The public is advised to monitor future forecasts as warnings are likely to be issued closer to the event.
Special weather statements have been issued for Bonavista North and Gander and vicinity for strong winds and blowing snow.
Extreme cold warning for Labrador west
Environment Canada has issued an extreme cold warning for Labrador City and Wabush.
It says "A period of very cold wind chills is expected."
Cold wind chill values reaching -45 C are expected to develop overnight tonight and persist into Saturday morning. Conditions will improve as temperatures rise on Saturday morning.
While anyone who isn't dressed warmly is at risk in cold weather conditions, the weather office says some are at greater risk than others for frost bite and hypothermia:
- homeless people
- outdoor workers
- people living in homes that are poorly insulated (with no heat or no power)
- people with certain medical conditions such as diabetes, peripheral neuropathy and diseases affecting the blood vessels, people taking certain medications including beta-blockers
- winter sport enthusiasts
- people who consume excess alcohol
- infants and
Extreme cold warnings are issued when very cold temperatures or wind chill creates an elevated risk to health such as frost bite and hypothermia.
Environment Canada encourages the public to monitor forecasts and report severe weather, by sending an email to weatherNLWO@ec.gc.ca or tweet reports to #NLwx.
All weather advisories for the province can be found online at https://weather.gc.ca/warnings/index_e.html?prov=nl
Emergency plan and kits encouraged during adverse weather forecasts
Public Safety Canada encourages everyone to make an emergency plan and get an emergency kit with drinking water, food, medicine, a first-aid kit and a flashlight. For information on emergency plans and kits go to http://www.getprepared.gc.ca/
Winter storm watches are issued when multiple types of severe winter weather are expected to occur together.