▶ Video · Forecast

Warm Air, Heavy Rain, And a Flash Freeze: A Wild Weather Swing Across NL

By Eddie Sheerr·March 17, 2026 · 4:06 PM

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Happy St. Patrick’s Day! 🍀

If your radar is looking green today, it’s not because of the holiday — it’s because a powerful storm system is moving through Newfoundland and Labrador, bringing a messy mix of rain, fog, wind, and rapidly changing temperatures.

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🌡️ Why It’s So Warm

This system is tapping into tropical moisture and warmth, pushing it north into the province. These setups often bring:

• Unseasonably warm temperatures

• Heavy rainfall

• Rapid changes when colder air returns

And that last part is key…

⚠️ Flash Freeze Risk (Especially Labrador)

As the cold front moves through tonight, temperatures will drop fast.

In areas like Happy Valley–Goose Bay, temperatures will:

• Be near +10°C this evening

• Drop to the minus teens by morning

That means standing water will freeze quickly, creating dangerous icy conditions for the Wednesday morning commute.

👉 If you’re out early: watch for black ice and consider a bit of salt around the house.

🌧️ Rainfall Totals

By the time this wraps up:

• Southern & Southwestern NL: 30–60 mm

• Avalon & Burin Peninsulas: 5–15 mm

Most of this falls overnight into Wednesday morning.

🌬️ Wind + Temperature Crash

It’s been windy — and while winds will gradually ease:

• Labrador calms by midday Wednesday

• Eastern Newfoundland takes until Wednesday morning

Then comes the big shift:

• Temperatures fall through the day Wednesday

• Rain ends as flurries

• Wind chills drop well below freezing

❄️ What to Expect Wednesday

• Morning: Mild, breezy, leftover rain

• Midday: Cooling quickly

• Evening: Below freezing everywhere, flurries ending

By tomorrow night, many areas will feel like winter again.

🌤️ The Good News

Once this system clears out, things look surprisingly calm:

• More seasonal temperatures

• Quiet weather through much of the week

• No major systems immediately on deck

📱 Stay Updated

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• Forecasts

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• Highway cameras

• Radar and maps

👉 sheerrweather.ca

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I’ll have my next update posted tomorrow morning!

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🗺️ Check out the Map Room to see all the latest weather observations for the Province.

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