Rare November tornado warning issued in southern Ontario, tree damage reported
Severe thunderstorms ended the weekend in southern Ontario, with a rare November tornado warning issued late Sunday night.
A Texas low that brought blizzard conditions to New Mexico, and heavy snow to Colorado tracked into the Great Lakes on Sunday, bringing quite the opposite kind of weather. Widespread rain fell throughout the morning hours, but as the cold front tracked across southern Ontario Sunday evening, a squall line moved through, as well.
At 10:56 p.m., Environment and Climate Change Canada (ECCC) issued a tornado warning for the Caledon area, urging residents to take cover immediately if threatening weather approached.
"Tornadoes could be wrapped in rain and may not be visible," said ECCC in the warning. "Do not wait to see a funnel cloud."
Damaging winds, large hail, and locally intense rainfall were also risks with the late night storms, with severe thunderstorm watches and warnings spanning much the region, including the city of Toronto.
A peak wind gust of 103 km/h was recorded in Hamilton, making it the fourth strongest November wind gust in history.
Thunderstorms always present a danger, no matter what time of the day, but when they occur at night the risks can be much greater. Conditions can change and become dangerous very quickly, heightening the threat of these nighttime storms while people are unaware or even asleep.
RELATED: Why nocturnal thunderstorms can be particularly dangerous
Possible Sunday tornado
There were numerous reports of damage around southern Ontario Sunday night, with more confined impacts witnessed across the Fergus area. There was an area of rotation on radar, which can be an indication of a developing tornado. Downed trees and snapped hydro lines were reported amid the storm.
No tornadoes have been confirmed, but further damage assessments will likely be conducted.
WATCH: Severe storms cause damage and knock out power in southern Ontario
Only four November tornadoes in Ontario history
Tornadoes are a very rare occurrence for Ontario in November, and only four have ever occurred during the month before:
Hamilton - Nov 9, 2005
Charleville (Prescott) - Nov 23, 2013
Georgetown - Nov 15, 2020
Sharon - Nov 21, 2021
The latest on record for the province dates back to December 12, 1946 in Exeter.
DON'T MISS: Rare November twisters touch down in New Brunswick to kick off the month
Severe thunderstorms this late in the season will also typically catch more people off guard.
"There's the potential for people not to pay attention to severe thunderstorm watches and warnings, and get caught unprepared when a tornado does happen," says Mark Robinson, meteorologist and Storm Hunter at The Weather Network. "This could lead to people not taking shelter in time and getting caught out in the open."
Earlier this month, three rare November twisters touched down in New Brunswick, making them the latest in the season for the province on record. Meanwhile, an extremely unusual late-season tornado also hit north of Vancouver, British Columbia.
With this extension of the summer severe weather season happening more often, it's important to always stay alert and updated on the watches and warnings in your area.
Here's a look at some of Sunday night's storm impacts shared by X users online:
Trees down and hydro lines snapped in Fergus. @weathernetwork #onstorm pic.twitter.com/gHoTh8kjkT
— Mark Robinson (@StormhunterTWN) November 11, 2024
Whoa. Lightning on this line is impressive. In KW now. @weathernetwork #onstorm pic.twitter.com/r8MI9nxBTv
— Mark Robinson (@StormhunterTWN) November 11, 2024
May have just had a weak tornado go through the #Fergus, ON area. Wrapped up bow segment, some fairly tight rotation, and what appears to be a radar-based tornado debris signature with temporal continuity (10:17 and 10:22 CASKR scans, circled). Only lowest tilt though. #ONstorm pic.twitter.com/x13s067MOW
— Dave Sills 🍁 (@dave_sills) November 11, 2024
Some tree damage at Ignatius north oh Guelph with that front. 10:30 pm. @StormhunterTWN pic.twitter.com/xmvyUSNXr2
— Lynn Chidwick (@lynnchidwick) November 11, 2024
Lightning just as I got to St Mary’s. This line is moving so fast! @weathernetwork #onstorm pic.twitter.com/g7oPQru8DW
— Mark Robinson (@StormhunterTWN) November 11, 2024
#ONStorm #ONwx Wow! 😮
Looks like there was some damage with the storm that moved through Fergus earlier this evening.
Thank you to Nicole for sharing these photos with us.
Did anyone else experience damage in the area?
- Brennen pic.twitter.com/0fzIJPxnuZ— Instant Weather Ontario ⚡️ (@IWeatherON) November 11, 2024