Blowing Snow Advisories, Winter Storm Warning and Wind Warnings Issued for Newfoundland by Environment Canada for Saturday Night and Sunday
A complex weather pattern will set up shop over the region between later today and Sunday as two weather features phase southeast of Newfoundland’s Avalon Peninsula. The combination of these two features will drive high winds (northerly gusts to 100 km/h) and the potential for moderate to heavy snowfall between this evening and later Sunday. Ahead of the weather’s arrival, Environment Canada has issued several weather alerts for the Island, and a few remain in place for Labrador, where this system will wind down later today.
I’d like to point out that there is considerable uncertainty, even at this point, as to just how much snow will fall over the Avalon Peninsula and specifically the southeast Avalon, Southern Shore and the St. John’s Metro.
The alerts state that 5 to 15 cm will fall for the St. John’s area and up to 20 cm on the southern shore, while up to 25 cm is possible around the Trepassey area and the eastern side of St. Mary’s Bay. I would like to see some wording that suggests that all areas may see significantly higher amounts if this system tracks a smidge further west. If that is the case, we will be looking at amounts in some of these areas well over 30 cm.
Keep in mind, I’m not trying to fear-monger or scare anyone. My goal is to give you the most likely outcome, and while lower-end snowfall is more likely, Environment Canada’s alerts take this route, the chance of a higher-end snowfall is more significant than I’d like to see at this stage in the game.
A Blowing Snow Advisory is in effect for the following areas from this evening until Sunday afternoon or evening:
St. John’s and vicinity
Avalon Peninsula Southeast
Avalon Peninsula North
Clarenville and vicinity
Bonavista Peninsula
Terra Nova
Bonavista North
Gander an vicnity
Grand Falls-Windsor and vicinity
Bay of Exploits
Total Snowfall Expected: 5 to 15 cm, except near 20 cm along the Southern Shore
Maximum Wind Gusts: 80 to 100 km/h from the north
Blowing snow advisories are issued when widespread poor visibility in blowing snow is expected.
A Winter Storm Warning is in effect for the following area from Saturday night through Sunday at noon:
Avalon Peninsula Southeast
Total Snowfall Expected: 15 to 25 cm (locally higher amounts possible)
Maximum Wind Gusts: 80 to 100 km/h from the northeast.
Conditions will rapidly deteriorate this evening as strong winds combine with fresh snowfall, causing widespread reduced visibility in snow and blowing snow.
Conditions will gradually begin to improve Sunday morning as temperatures rise to just above zero, and snow mixes with, or transitions to, rain along southernmost parts of the coast.
Allow extra time for travel. Consider postponing non-essential travel and outdoor activities until conditions improve.
Winter Storm Warnings are issued when multiple types of severe winter weather (such as snow, freezing rain, wind and rain) are expected or occurring.
A Wind Warning is in effect for the following areas from tonight until Sunday afternoon or evening:
St. John’s and vicinity
Avlaon peninsula north
Clarenville and vicinth
Bonavista Peninsula
Terra Nova
Bonavista North
Bay of Exploits
Wind speeds will gust as high as 80 to 100 km/h from the north to northeast between later tonight and Sunday.
Wind warnings are issued when there is a significant risk of damaging winds.
A Winter Storm Warning reamins in effect for the following areas until this afternoon or evening:
Green Bay - White Bay (20 to 30 by late tonight)
The Northern Peninsula East (5 to 15 cm by tonight, except 15 cm inland)
Port Saunders and the Straits (5 to 15 cm by tonight, except 15 cm inland)
Norman Bay to Lodge Bay (Labrador - additional 5 cm by this afternoon)
Winter Storm Warnings are issued when multiple types of severe winter weather (such as snow, freezing rain, wind and rain) are expected or occurring.
A Blowing Snow Advisory remains in effect until noon today for the following areas:
Cartwright to Black Tickle
Eagle River
A Snowfall Warning remains in effect for Red Bay to L’anse-au-Clair until noon today for an additional 2 to 4 cm of snow, except as much as 10 cm north of Red Bay.
For the most up-to-date weather alerts, visit this page. I’ll have updates later today!
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