April 17, 2024: Thunder Bay Detailed Weather Forecast and Significant Rainfall Alert


Thunder Bay – WEATHER – A Special Weather Statement is in effect for Thunder Bay today, with significant rainfall anticipated to impact the area into Thursday. Local authorities warn of potential flooding due to the saturated and still-frozen ground, highlighting the urgency for residents to stay informed and prepared.

Today’s Weather Overview

Current Conditions As of 5:00 AM EDT at Thunder Bay Airport, conditions are wet with light rain observed. The temperature hovers around a chilly 2.8°C with a high humidity of 92%.

Winds are coming from the east-northeast at 25 km/h, gusting up to 37 km/h. Visibility is reduced to 8 km under the current barometric pressure of 101.2 kPa, which is on a downward trend, indicating more precipitation could be on the way.

Extended Weather Forecast

Expected Conditions Today, Thunder Bay will experience periods of rain throughout the day, with snow possibly mixing in during the early hours, especially in higher terrain. Rainfall could accumulate 10 to 15 mm, with wind speeds reaching up to 60 km/h. The maximum temperature will be just above freezing at 4°C, and the UV index remains low.

Tonight, rain will taper off, giving way to cloudy skies and a 40% chance of light rain showers or flurries. Temperatures will dip slightly to 2°C.

On Thursday, the weather will clear up somewhat, with a mix of sun and cloud and occasional showers or flurries, reaching a higher, more comfortable temperature of 12°C during the day. The UV index will rise to a moderate level of 4.

Wardrobe Recommendations Given the chilly and wet conditions, residents are advised to wear waterproof outerwear and sturdy, non-slip footwear. Layering is key, as temperatures will fluctuate slightly, especially when moving from rainy to cloudy conditions.

Weather Trivia Did you know? The term “Colorado Low” refers to a low-pressure system that originates from the lee of the Rockies, often bringing significant weather changes as it moves eastward across North America. These systems are known for their potential to produce everything from heavy snowfall to severe thunderstorms in the regions they impact.

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