When Environment Canada issues a snow squall warning for the London area, it is signaling something specific and dangerous: an intense burst of snow that can drop visibility to near zero within minutes, often paired with strong, gusty winds.
During an active squall, conditions can go from clear to whiteout on a highway in the time it takes to drive a few kilometres. This is exactly why squall warnings exist separately from regular snowfall warnings. Drivers caught in a squall with no notice are far more likely to be involved in multi-vehicle collisions, since visibility can drop before there is time to react.
Squalls also tend to be highly localized. One part of the city can be in whiteout conditions while a spot ten minutes away sees nothing but light flurries. This localized intensity is part of what makes squalls difficult to plan around using a general forecast alone, and why real-time radar tracking matters so much once a warning is issued.
For snow removal purposes, a squall warning means driveways and lots can go from clear to needing service in a very short window. Squalls that repeat through the day can add up to meaningful accumulation even if no single burst lasts very long.
How Squalls Differ From a Regular Snowfall
A regular snowfall warning is about how much snow will build up over many hours. A squall warning is about intensity. Snow can fall at several centimetres an hour in a narrow band, then stop just as fast. Because the bands move with the wind, the heaviest snow may hit one neighbourhood and miss the next one completely.
Staying Safe During a Squall
The safest choice during an active squall is to delay travel until the band passes. If you are already driving, slow down, turn on your full lights and leave plenty of space. Avoid stopping in a live lane. At home, wait for the band to pass before shovelling, since clearing during the heaviest burst usually means doing the job twice.
What Squalls Mean for Your Driveway
Squalls can stack up quickly when several bands pass through the same area in one day. With a seasonal plan, service starts automatically once 5 cm of snow falls, so you do not need to call. Each visit is recorded with timestamped photos, so you can see when your driveway or lot was cleared. A seasonal plan is $650, and per-visit service is $70.
Watching Conditions Yourself
Environment Canada posts squall warnings on its website and weather app, and radar is the best way to see where a band is heading. Squall season tends to be strongest in early winter, when the lakes are still open and cold air moves across warmer water.
Why Squalls Hit Some Areas Harder
Squall bands form when cold air crosses open lake water and picks up moisture. Where the band sets up depends on wind direction, so the same storm can bring heavy snow to one part of the region and almost nothing to another. That is why a local warning can matter more than the general forecast for your street.
Frequently Asked Questions
Is a snow squall the same as a blizzard?
No. A squall is a short, intense burst of snow in a narrow band. A blizzard needs strong winds and poor visibility lasting at least four hours.
Do I need to book a visit after a squall?
Not on a seasonal plan. Service starts automatically once 5 cm of snow has fallen.
Want a set price for your property? Request a free quote or call or text (548) 888-8702. Quotes come back within 2 business days. You can also read about residential snow removal and commercial snow removal.
What's included… and what's extra
A Thames Valley Snow seasonal residential plan starts from $650 for a standard driveway. It covers clearing the driveway every time snowfall reaches the trigger depth in your agreement, plus the windrow the city plow leaves at the end of the driveway. Larger driveways are priced on our snow removal prices page.
Popular add-ons, priced per season: walkway and steps $150–175, salting $175, priority service $125, pet-safe salt $120, driveway extension $95 and city sidewalk clearing $90. Add only what your property needs; everything is listed on the quote so there are no surprises. Get your fixed price or call or text (548) 888-8702.
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