Thunder Bay – WEATHER – A winter weather travel advisory is currently in effect for the City of Thunder Bay. Motorists should prepare for locally heavy snowfall with accumulations of up to 10 cm, reduced visibility, and slippery roads.
While Thunder Bay and region has escaped the major Winter Storm that blanketed much of Northeastern and Eastern Ontario with up to a metre of snow, it appears we are getting our first taste of winter this week.
This snowfall is expected to begin Tuesday afternoon and continue into the night as an Alberta Clipper moves through the region.
Current Weather
As of 6:00 PM EST, Thunder Bay is experiencing mostly cloudy skies with a temperature of -6.2°C. The wind is blowing from the west-northwest at 10 km/h, creating a wind chill of -11°C. The barometric pressure is at 103.3 kPa and rising, with a relative humidity of 72%. Visibility is currently clear at 24 km, but that will change come Tuesday afternoon.
Tonight’s Forecast
For tonight, expect partly cloudy skies with light winds up to 15 km/h. The temperature will drop to a brisk -13°C, and with the wind chill, it will feel like -17°C. Bundle up for any late-night ventures—it’s going to be frigid!
Tuesday: Snow Alert
Tuesday begins with mainly cloudy skies. Snow is expected to start in the afternoon, bringing approximately 5 cm by nightfall. Winds remain light at 15 km/h, with a high temperature of -4°C. The wind chill will make it feel like -16°C in the morning, improving slightly to -7°C by the afternoon.
As the evening progresses, another 5 cm of snow will fall before tapering off overnight. Winds will pick up, shifting westward at 20 km/h. The temperature will dip to -7°C, with a biting wind chill of -14°C by dawn.
Wednesday: A Flurry-Filled Day
Wednesday will stay chilly and gray, with a 60% chance of flurries and a high of -6°C. If skies clear slightly overnight, expect a low of -14°C and a 30% chance of more flurries.
Wardrobe Tip
Layer up with a warm winter coat, a thick scarf, gloves, and sturdy boots. Tuesday’s snowstorm will make slick surfaces unavoidable, so ensure footwear has good traction.
What is an Alberta Clipper?
If you live in Northwestern Ontario, you’ve likely heard the term “Alberta Clipper” during winter weather forecasts. But what exactly is it?
Essentially, an Alberta Clipper is a fast-moving low-pressure system that originates in or near Alberta, Canada. These systems typically track southeastward across Canada and the northern United States, bringing with them a quick burst of snow and a sharp drop in temperature.
Why “Clipper”?
The name comes from the clipper ships of the 19th century, known for their speed and agility. Like these ships, Alberta Clippers move quickly, often crossing the continent in just a few days.
What to Expect:
- Light to moderate snowfall: Alberta Clippers usually don’t dump massive amounts of snow, but they can still bring several inches of accumulation.
- Strong winds: Winds can be gusty, causing blowing snow and reduced visibility.
- Cold temperatures: One of the hallmarks of an Alberta Clipper is the blast of Arctic air that follows in its wake. Temperatures can plummet significantly after a Clipper passes through.
Impacts:
While Alberta Clippers are generally not as intense as other winter storms, they can still cause disruptions:
Travel delays: Snow and wind can make driving conditions hazardous.
School closures: Schools may close due to poor weather.
Power outages: Strong winds can bring down trees and power lines.
Stay Informed:
It’s important to stay informed about weather conditions during the winter months. Pay attention to forecasts and be prepared for sudden changes in the weather. If an Alberta Clipper is headed your way, take precautions and adjust your travel plans accordingly.
Prepare for Hazardous Travel
With heavy snow accumulating on roads, highways, and walkways, winter driving conditions will be in full force. Reduced visibility during heavy snowfall may catch drivers off guard, so leave extra space between vehicles, reduce your speed, and ensure your headlights are on.
If you’re planning to travel, consider postponing non-essential trips. For those venturing out, equip your vehicle with winter essentials like snow scrapers, a first aid kit, and extra blankets.
Winter Driving: Be Prepared, Stay Safe
Winter driving in Northwestern Ontario can be unpredictable. Blizzards, freezing rain, and icy roads are all possibilities, so it’s crucial to be prepared for anything. Here’s a checklist of essential items to keep in your vehicle this winter:
For Winter Weather:
- Snow brush and ice scraper: Essential for clearing snow and ice from your vehicle before you hit the road.
Shovel: A small, collapsible shovel can help you dig out if you get stuck.
- Warm clothing and blankets: Pack extra layers, hats, gloves, and blankets to stay warm in case of a breakdown or delay.
Booster cables: Dead batteries are common in cold weather.
- First-aid kit: Always a good idea to have on hand.
- Flashlight with extra batteries: Essential for visibility in low-light conditions.
- Non-perishable food and water: Pack snacks and water in case you get stranded.
- Kitty litter or sand: Provides traction if you get stuck on ice.
- Windshield washer fluid: Make sure it’s rated for sub-zero temperatures.
Especially for Snowy Conditions:
- Tow rope or chain: Helpful if you need to be pulled out of a snowbank.
Traction mats: Provide extra grip on snow and ice.
- Emergency flares or reflectors: Alert other drivers to your presence if you’re stopped on the side of the road.
- Cell phone charger: Keep your phone charged in case you need to call for help.
Don’t Forget:
- Winter tires: Provide superior traction on snow and ice compared to all-season tires.
- Full tank of gas: Avoid running low on fuel, especially in remote areas.
- Check road conditions: Before heading out, check 511on.ca for road closures and updates.
By taking these precautions, you can help ensure a safe and comfortable driving experience this winter.
Weather Trivia
Did you know Alberta Clippers, like the one heading for Thunder Bay, can dump snow at a rate of 2 cm per hour? Their swift movement means we often see intense but short-lived snowfall.
