What turns a snowstorm into a raging blizzard?

Ontario: Snowstorms are pretty common in Canada during winter. But some of these storms can escalate into fierce blizzards that stick in our minds long after the snow melts.

So, what actually makes a snowstorm turn into a blizzard? It’s not just about how cold it is or how much snow falls.

In Canada, meteorologists follow the 4-4-4 rule from Environment and Climate Change Canada. This rule helps them figure out if a snowstorm has become a blizzard.

To qualify as a blizzard, a storm needs to have winds of at least 40 km/h, blowing snow that cuts visibility to 400 meters or less, and it has to last for at least 4 hours. If you’re north of the treeline, that duration bumps up to 6 hours.

These conditions create a whiteout, making it super hard to see anything in front of you. And get this: not all blizzards need fresh snow falling. In the Prairies, there are ground blizzards where strong winds whip up snow already on the ground, causing low visibility.

Blizzards can be really dangerous, especially for drivers. It’s easy to get lost or stuck. If you have to go out during a storm, make sure someone knows where you’re headed.

Even a quick trip to the mailbox can be risky. You can easily lose your way in a whiteout, which can lead to serious issues like frostbite or hypothermia.

Before a storm hits, charge your devices and have backup batteries ready. Staying connected is super important during a storm.

Have a plan to keep warm, whether you’re at home or on the road. Stock up on warm clothes, good footwear, and blankets.

It’s also smart to keep an emergency kit at home and in your car. This should include first-aid supplies, batteries, flashlights, food, and water. And don’t forget snow removal tools in case you get stuck!