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Centre for Precision Forecasts
Plan ahead with precision. No compromises. A reliable source for forecasting.
![Weather Watch Logo](https://static.wixstatic.com/media/18b51d_3cc8797bdeb441a4aa2b7191230d0521~mv2.png/v1/crop/x_0,y_45,w_1594,h_1352/fill/w_97,h_83,al_c,q_95,enc_avif,quality_auto/Weather%20Watch%20Logo%20F.png)
![Weather Watch Logo Text](https://static.wixstatic.com/media/18b51d_98fb91b3c3d04d81a4616f4d7ee5bf68~mv2.png/v1/fill/w_149,h_46,al_c,q_95,enc_avif,quality_auto/Weather%20Watch%20Logo%20F_edited.png)
![TransCanada Weather Logo](https://static.wixstatic.com/media/18b51d_585c2e4f7aed461d99eaaabbe2345335~mv2.jpg/v1/fill/w_83,h_83,al_c,q_90,enc_avif,quality_auto/TransCanada%20Weather%20Logo.jpg)
TransCanada Weather
![Capture.PNG](https://static.wixstatic.com/media/18b51d_191a6c9ba0194b57a3dec2220060f612~mv2.png/v1/fill/w_51,h_20,al_c,q_95,enc_avif,quality_auto/Capture_PNG.png)
Written Outlooks
![](https://static.wixstatic.com/media/a27d24_82693b582ad74f03b0faf3d49f1027d2~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/a27d24_82693b582ad74f03b0faf3d49f1027d2~mv2.webp)
![Snowstorm Targets Northern Ontario, 50cm+ Possible](https://static.wixstatic.com/media/a27d24_82693b582ad74f03b0faf3d49f1027d2~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/a27d24_82693b582ad74f03b0faf3d49f1027d2~mv2.webp)
Snowstorm Targets Northern Ontario, 50cm+ Possible
![Winter Storm Targets Ontario; 35cm+ Possible](https://static.wixstatic.com/media/a27d24_04b7bfc96ada42bc8786f89860b44de2~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_04b7bfc96ada42bc8786f89860b44de2~mv2.webp)
Winter Storm Targets Ontario; 35cm+ Possible
![Snowstorm to Impact Portions of Ontario](https://static.wixstatic.com/media/a27d24_3df32fc211e8412e88e54eed6ff3ea0d~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_3df32fc211e8412e88e54eed6ff3ea0d~mv2.webp)
Snowstorm to Impact Portions of Ontario
![Widespread Snowfall across Southern Ontario on Thursday](https://static.wixstatic.com/media/a27d24_7d81b45352804bd0a210be5b85660138~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_7d81b45352804bd0a210be5b85660138~mv2.webp)
Widespread Snowfall across Southern Ontario on Thursday
![Biggest Snowstorm of the Season for Southern Ontario](https://static.wixstatic.com/media/a27d24_cb71408f284649f3bac6b38de20ca4b5~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_cb71408f284649f3bac6b38de20ca4b5~mv2.webp)
Biggest Snowstorm of the Season for Southern Ontario
![Widespread Snow and Lake Effect Snow to Impact Southern Ontario](https://static.wixstatic.com/media/a27d24_8e00898ec3a84ce0be8e8bce6e8c31f4~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_8e00898ec3a84ce0be8e8bce6e8c31f4~mv2.webp)
Widespread Snow and Lake Effect Snow to Impact Southern Ontario
![Significant Ice and Snow Expected Across Southern Ontario; Power Outages Possible; Whiteouts](https://static.wixstatic.com/media/a27d24_5f254292cb20457cb96090ec5ce84863~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_5f254292cb20457cb96090ec5ce84863~mv2.webp)
Significant Ice and Snow Expected Across Southern Ontario; Power Outages Possible; Whiteouts
![Strong Snow Squalls to Produce Significant Snowfall (> 25cm); Locally 40cm Possible](https://static.wixstatic.com/media/a27d24_dfcb18dcc1054af1ac6ff615727d42c7~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_dfcb18dcc1054af1ac6ff615727d42c7~mv2.webp)
Strong Snow Squalls to Produce Significant Snowfall (> 25cm); Locally 40cm Possible
![Winter Storm to Bring Widespread 10-25cm of Snow To Southern Ontario; Pockets of 40cm Possible](https://static.wixstatic.com/media/a27d24_f7561eb92c6c431cb02fd90c3d5c678f~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_f7561eb92c6c431cb02fd90c3d5c678f~mv2.webp)
Winter Storm to Bring Widespread 10-25cm of Snow To Southern Ontario; Pockets of 40cm Possible
![Long-Duration Snow Squall Event Around Lake Nipigon to Start the Work Week](https://static.wixstatic.com/media/a27d24_238e98208b5348c198b7e9d990f65fff~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_238e98208b5348c198b7e9d990f65fff~mv2.webp)
Long-Duration Snow Squall Event Around Lake Nipigon to Start the Work Week
![Strong Snow Squalls to Bring Hazardous Travel and Heavy Snow to Parts of Southern Ontario](https://static.wixstatic.com/media/a27d24_786ab84e3bca4747b86f4128ff51fa03~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_786ab84e3bca4747b86f4128ff51fa03~mv2.webp)
Strong Snow Squalls to Bring Hazardous Travel and Heavy Snow to Parts of Southern Ontario
![Heavy Snow and Snow Squalls to Impact Far Northern and Northern Ontario](https://static.wixstatic.com/media/a27d24_7a3dcbba36c543dfaef9faeb4a5bda09~mv2.png/v1/fill/w_454,h_341,fp_0.50_0.50,q_95,enc_auto/a27d24_7a3dcbba36c543dfaef9faeb4a5bda09~mv2.webp)
Heavy Snow and Snow Squalls to Impact Far Northern and Northern Ontario