Springtime Weather

By: BwalshNLWeather , 12:24 AM GMT on April 08, 2014

Good evening,

After a long winter across much of Canada, there are positive signs of spring over the coming weeks as milder (near normal) temperatures move over Newfoundland and Labrador, along with the potential for rain and fog, causing significant snow melt. The first system to affect the province approaches from the Maritimes late Tuesday and tracks into Southeastern Labrador Wednesday. Snow develops across the Island, from west to east, Tuesday night, changing to rain across Newfoundland by Wednesday morning as the associated warm front lifts northward. Rain ends from west to east on Wednesday as the cold front moves eastward, although the rain will persist until early Thursday morning on the Avalon as the front stalls over the region. Rainfall amounts will be highest on the South Coast and Avalon Peninsula Wednesday/early Thursday where 30-60 mm of rain is possible. The rain, in combination with fog, mild temperatures and southerly winds gusting up to 110 km/h along the coasts, will lead to significant snow melt and could produce localized flooding, particularly on the South Coast and Burin Peninsulas Wednesday.

Timeline for St. John’s and the Northeast Avalon:
Wednesday 12 – 6 AM: Light snow changing to rain. Fog. Risk of freezing rain. Snowfall amount 2-4 cm. Rainfall amount 5 mm. Wind south 40 gusting to 60 km/h increasing to south 60 gusting to 100 km/h.
Wednesday 6 AM – Noon: Rain and fog. Amount 10 mm. Wind south 60 gusting to 100 km/h.
Wednesday Noon – 6 PM: Rain and fog. Amount 5-10 mm. Wind southwest 50 gusting to 80 km/h.
Wednesday 6 PM – Midnight: Rain tapering to showers. Fog. Amount 2-5 mm. Wind southwest 40 gusting to 60 km/h.
Thursday 12 – 6 AM: Showers, drizzle and fog. Wind southwest 30 gusting to 50 km/h.
Thursday 6 AM – Noon: Showers, drizzle and fog ending, then clearing. Wind west 30 gusting to 50 km/h.

Snowfall and Rainfall Amounts by Thursday Morning:
St. John’s-Metro/Avalon Peninsula: 2-5 cm snow; 25-40 mm rain
South Coast/Burin Peninsula: 5 cm snow; 40-70 mm rain
Clarenville/Bonavista/Central Newfoundland: 5-10 cm snow; 10-20 mm rain
West Coast: 10 cm snow; 10-20 mm rain
Northern Peninsula/Southeastern Labrador: 15-20 cm snow; 5-10 mm rain
Northern and Western Labrador: 10-15 cm snow

Outlook: After the system clears out on Thursday, no significant systems are expected to affect Newfoundland through early next week. Temperatures will remain near, to slightly above, seasonal through next week, with the potential for values near the double digits early next week for inland sections of the Island.

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About BwalshNLWeather

Operations Manager and Meteorologist with Ice & Environmental Services at Provincial Aerospace Ltd. I've been weather forecasting since 2000.

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