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Centre for Precision Forecasts
Plan ahead with precision. No compromises. A reliable source for forecasting.



TransCanada Weather

Written Outlooks
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Life-Threatening Winter Storm (Dec 23-25, 2022): Preliminary Forecast Southwestern Ontario
A life-threatening winter storm will impact Ontario, starting on Friday and lasting through the weekend. While there are always comments...
Dec 21, 20225 min read
1,382 views


Heavy Rain, Thunderstorms, and Strong Winds Target Southern Ontario
We are tracking a large low-pressure system which is producing strong tornadoes and severe thunderstorms across the Deep Southeast United...
Apr 13, 20203 min read
803 views


Snowstorm Targets Northern Ontario, 50cm+ Possible
We are tracking a large low-pressure system which is producing strong tornadoes and severe thunderstorms across the Deep Southeast United...
Apr 13, 20204 min read
102 views


Strong to Severe Thunderstorms Possible Across Southern Ontario; Large Hail Possible
We are watching the risk for severe thunderstorms across Southwestern Ontario this evening. Thunderstorms are expected to develop across...
Apr 7, 20202 min read
101 views


Damaging Winds Possible as Severe Thunderstorms Target Southern Ontario
We are watching the risk for our first round of severe thunderstorms across Southern Ontario this season as a cold front is expected to...
Mar 20, 20202 min read
827 views


Blizzard Conditions Expected from Snow Squalls; Locally 60cm+
We are watching a dangerous snow squall setup across the Great Lakes which is expected to last from Thursday through to Saturday....
Feb 27, 20205 min read
1,491 views


Winter Storm Targets Ontario; 35cm+ Possible
We are tracking what is set to be one of the biggest snowstorm this winter across Southern Ontario with a widespread 10-20cm expected...
Feb 25, 20208 min read
4,120 views


Snowstorm to Impact Portions of Ontario
We are closely watching a fast-moving system as it moves towards Southern and Northeastern Ontario. This system will bring a heavy swath...
Feb 18, 20203 min read
2,048 views


Widespread Snowfall across Southern Ontario on Thursday
We are tracking a complex Texas low that is expected to move across the Southern Great Lakes as it weakens before strengthening over the...
Feb 6, 20203 min read
1,219 views


Biggest Snowstorm of the Season for Southern Ontario
We are tracking a significant snowstorm which is expected to impact a large portion of Southern Ontario and into Northeastern Ontario....
Jan 18, 20204 min read
10,994 views


Significant Ice Storm, Record Rainfall and Heavy Snow across Ontario
We are tracking a dynamic winters storm across portions of Ontario which will bring record rainfall, significant freezing rain and heavy...
Jan 11, 202012 min read
2,207 views


Widespread Snow and Lake Effect Snow to Impact Southern Ontario
After a snowstorm and road closures in Northern Ontario with an ice storm in Southern Ontario, this system is pulling away with cooling...
Dec 31, 20195 min read
1,544 views


Winter Storm to Bring Heavy Snow, Ice Storm Conditions, and Thunderstorms to Ontario
We are currently watching a significant winter storm as it crossed into Ontario throughout the day on Sunday, lasting through to Monday...
Dec 29, 20197 min read
2,419 views


Strong Snow Squalls and Blizzard-Like Conditions to Impact Southwestern Ontario
We are watching the risk for some significant snow squalls across Southwestern Ontario with blizzard-like conditions possible. Areas in...
Dec 18, 20194 min read
1,741 views


Strong System to Bring Heavy Snow, Freezing Rain, and Heavy Rain to Southern Ontario
We are currently tracking a large system as it crosses Ontario and moves into Quebec and Atlantic Canada over the coming days. This...
Dec 14, 20194 min read
265 views


Compact System to Bring 10-15cm of Snow to Northeastern Ontario
We are closely watching a small system which is expected to cross portions of Northeastern Ontario stretching from Sault Ste. Marie...
Dec 12, 20191 min read
117 views


*UPDATED* Multi-Day Snow Squall Outbreak Across the Great Lakes
This is an updated forecast post from the one issued between 12pm and 2pm on Tuesday, December 10th, 2019. This forecast is for the same...
Dec 11, 20197 min read
810 views


Multi-Day Snow Squall Outbreak Across the Great Lakes
We have updated our forecast to better align with expected squall locations from today's data as well as updated snowfall totals. Updated...
Dec 10, 20195 min read
1,516 views


Moderate Snow Squalls Across Portions of the Southern Ontario Snowbelt
We are closely watching the risk of some isolated snow squalls across portions of Southern Ontario extending to the southeast of Georgian...
Dec 4, 20194 min read
806 views


Significant Ice and Snow Expected Across Southern Ontario; Power Outages Possible; Whiteouts
We are closely watching a large and complex weather system as it crosses the Central United States before impacting Southern Ontario...
Dec 1, 20199 min read
2,735 views
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