Weather Update: Yellow Advisory – Special Weather Statement
Thunder Bay – WEATHER – Thunder Bay is quiet late this morning, but don’t get too comfortable.
Environment Canada has a Yellow Advisory in effect, and a Special Weather Statement warns that snow and local blowing snow will develop tonight into Friday morning.
Gusty easterly winds may knock visibility down quickly once the snow starts, especially on open stretches outside the city.
Current Conditions (10:00 AM EDT, Thursday March 12)
Thunder Bay is partly cloudy late this morning with cold, dry-feeling air for March.
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Temperature: -9.0°C
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Wind chill: -12
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Wind: WSW 6 km/h
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Pressure: 102.1 kPa (rising)
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Humidity: 68%
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Dew point: -13.8°C
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Visibility: 32 km
Weather Alert Update
Special Weather Statement (Issued 10:08 AM EDT):
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What: Snow and local blowing snow tonight into Friday morning
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Snowfall guidance: 10–15 cm possible in the broader region, with the highest totals closer to the Ontario–Minnesota border and lesser amounts farther north (including Thunder Bay).
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Wind: Easterly gusts 50–60 km/h may cause blowing snow and reduced visibility
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Timing: Improving west to east Friday morning
Today (Thursday)
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Sky: A mix of sun and cloud
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Wind: Becoming SE 20 km/h late this afternoon
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High: -4°C
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Wind chill: Near -14
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UV index: 2 (Low)
Expected Conditions (Next Three Days)
Tonight (Thursday Night)
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Sky: Mainly cloudy
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Snow: Snow and local blowing snow beginning this evening
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Amount: 2 to 4 cm
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Wind: E 30 km/h gusting to 50
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Low: -9°C
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Wind chill: -11 this evening, -18 overnight
Friday, March 13
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Snow: Ending near noon, then mainly cloudy with 40% chance of flurries
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Local blowing snow: Early morning
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Amount: 2 to 4 cm
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Wind: NE 30 gusting 50, becoming NW 20 gusting 40 in the afternoon
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High: -3°C
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Wind chill: -18 in the morning, -9 in the afternoon
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Friday night: Clear, low -16°C
Saturday, March 14
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Day: A mix of sun and cloud with 40% chance of snow
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High: -1°C
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Night: Cloudy periods with 30% chance of flurries, low -9°C
Wardrobe Recommendations
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Today: Winter coat, toque, gloves—still needed at -9°C. Layer so you can adjust if it feels milder near the afternoon high.
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Tonight into Friday morning: Dress for wind + blowing snow. A windproof outer layer, neck warmer, and mitts make a big difference. If you’ll be driving, pack extra warm gear in case of delays.
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Footwear: Expect drifting and compacted snow in spots—use boots with strong traction.
Weather Trivia
Blowing snow can become a bigger travel problem than snowfall totals. Even a few centimetres can create sudden “white curtain” visibility drops when gusts reach 50–60 km/h, especially along open highways and rural roads.
Overview
Thunder Bay weather update for Thursday, March 12, 2026: -9°C late morning with a Yellow Advisory in effect. Environment Canada warns snow and local blowing snow tonight into Friday morning with gusts 50–60 km/h. Snow begins this evening with 2–4 cm expected, followed by another 2–4 cm Friday before clearing and turning colder Friday night.
