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Ontario Weather Alerts

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Ontario Weather Alerts from Environment Canada Data. This is an unofficial convenience service NOT affiliated with ECCC. Please consult ECCC for official alerts weather.gc.ca Updates every 5 minutes Bot By @JayIsPainting.earthskyart.ca

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Posts by Ontario Weather Alerts (@onwxalerts.bsky.social)

16:55 Mar 03 2026
YELLOW WARNING - COLD - IN EFFECT for Far Northern Ontario
Expires: 08:55 Mar 04 2026
A prolonged period of very cold wind chills is expected.

What:
Wind chill values near minus 45.

When:
Tonight into Wednesday morning, and Wednesday ...
Visit https://weather.gc.ca for details

03.03.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

07:22 Mar 02 2026
YELLOW WARNING - COLD - ENDED for Gatineau
Expires: 08:22 Mar 02 2026
Extreme cold conditions are no longer expected.


...
Visit https://weather.gc.ca for details

02.03.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

13:17 Mar 01 2026
YELLOW WARNING - COLD - IN EFFECT for Gatineau
Expires: 05:17 Mar 02 2026
A period of very cold wind chills is expected.

What:
Wind chill values of -30 to -35.

When:
Overnight into Monday morning.

...
Visit https://weather.gc.ca for details

01.03.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

14:02 Feb 28 2026
YELLOW WARNING - COLD - IN EFFECT for Far Northern Ontario
Expires: 06:02 Mar 01 2026
A period of very cold wind chills continues.

What:
Wind chill values of -40 to -45.

When:
Tonight into Sunday morning.

...
Visit https://weather.gc.ca for details

28.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:29 Feb 27 2026
YELLOW ADVISORY - BLOWING SNOW - IN EFFECT for Northern Ontario
Expires: 23:30 Feb 27 2026
Poor visibility in blowing snow is expected in some locations.

What:
Significantly reduced visibilities in areas of blowing snow.
Strong winds g...
Visit https://weather.gc.ca for details

27.02.2026 23:27 — 👍 0    🔁 1    💬 0    📌 0

16:21 Feb 26 2026
YELLOW WARNING - WINTER STORM - IN EFFECT for Far Northern Ontario
Expires: 08:21 Feb 27 2026
Winter storm beginning Friday afternoon or evening.

What:
Visibilities near-zero in areas of heavy snow and blowing snow.
Total snowfall ...
Visit https://weather.gc.ca for details

26.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:57 Feb 25 2026
SPECIAL WEATHER STATEMENT IN EFFECT for Southern Ontario
Expires: 21:02 Feb 25 2026
Flurries, sometimes heavy, are expected.

What:
Flurries, at times heavy, could suddenly reduce visibilities.

When:
This evening.

Additional informati...
Visit https://weather.gc.ca for details

25.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:41 Feb 24 2026
SPECIAL WEATHER STATEMENT IN EFFECT for Northern Ontario
Expires: 00:05 Feb 25 2026
Significant snowfall continues.

What:
Total snowfall amounts of 10 to 15 cm. Locally higher amounts possible.
Reduced visibility in areas of heavier sn...
Visit https://weather.gc.ca for details

24.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

14:06 Feb 23 2026
YELLOW WARNING - COLD - IN EFFECT for Southern Ontario
Expires: 06:06 Feb 24 2026
A period of very cold wind chills is expected.

What:
Wind chill values near minus 30.

When:
Tonight into Tuesday morning.

...
Visit https://weather.gc.ca for details

23.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

14:15 Feb 22 2026
YELLOW WARNING - COLD - IN EFFECT for Far Northern Ontario
Expires: 06:15 Feb 23 2026
A period of very cold wind chills is expected.

What:
Wind chill values near minus 45.

When:
Tonight through Monday morning, then possibly returning ...
Visit https://weather.gc.ca for details

22.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:54 Feb 21 2026
YELLOW ADVISORY - FREEZING DRIZZLE - IN EFFECT for Southern Ontario
Expires: 23:59 Feb 21 2026
Areas of freezing drizzle continue.

...
Visit https://weather.gc.ca for details

21.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:33 Feb 20 2026
SPECIAL WEATHER STATEMENT IN EFFECT for Southern Ontario
Expires: 23:00 Feb 20 2026
Snow continues.

What:
Snowfall amounts of 5 to 10 cm.
Reduced visibility in heavy snow.

When:
Tapering off this evening.

Additional information:
Snow...
Visit https://weather.gc.ca for details

20.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

15:02 Feb 19 2026
YELLOW WARNING - WINTER STORM - IN EFFECT for Northern Ontario
Expires: 21:01 Feb 19 2026
Hazardous winter conditions are expected to continue.

What:
Additional snowfall amounts of 5 to 10 cm.

When:
Ending this evening.

...
Visit https://weather.gc.ca for details

19.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:38 Feb 18 2026
YELLOW ADVISORY - FREEZING DRIZZLE - IN EFFECT for Southern Ontario
Expires: 02:01 Feb 19 2026
Areas of freezing drizzle are expected.

What:
Periods of freezing drizzle leading to minor ice build-up and icy surfaces.

When:
Through thi...
Visit https://weather.gc.ca for details

18.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:54 Feb 16 2026
YELLOW ADVISORY - FOG - IN EFFECT for Southern Ontario
Expires: 08:00 Feb 17 2026
Near zero visibility in fog is expected over some areas.

Visibility is expected to improve through Tuesday morning.

...
Visit https://weather.gc.ca for details

16.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

14:55 Feb 15 2026
YELLOW WARNING - AIR QUALITY - IN EFFECT for Ontario
Expires: 06:55 Feb 16 2026
Stagnant winter weather conditions are creating elevated pollution levels.

High levels of air pollution have developed. An Air Quality Warning is in place ...
Visit https://weather.gc.ca for details

15.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

09:01 Feb 14 2026
YELLOW ADVISORY - FOG - ENDED for Southern Ontario
Expires: 10:01 Feb 14 2026

...
Visit https://weather.gc.ca for details

14.02.2026 23:27 — 👍 0    🔁 1    💬 0    📌 0

16:54 Feb 13 2026
SPECIAL WEATHER STATEMENT ENDED for Southern Ontario
Expires: 17:54 Feb 13 2026

...
Visit https://weather.gc.ca for details

13.02.2026 23:27 — 👍 2    🔁 0    💬 0    📌 0

07:17 Feb 12 2026
SPECIAL WEATHER STATEMENT ENDED for Southern Ontario
Expires: 08:17 Feb 12 2026

...
Visit https://weather.gc.ca for details

12.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:10 Feb 11 2026
SPECIAL WEATHER STATEMENT IN EFFECT for Southern Ontario
Expires: 23:00 Feb 11 2026
Local blowing snow and freezing drizzle this evening.

What:
Local blowing and drifting snow reducing visibility at times.
Patchy freezing drizzle prod...
Visit https://weather.gc.ca for details

11.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:05 Feb 10 2026
SPECIAL WEATHER STATEMENT ENDED for Gatineau
Expires: 17:05 Feb 10 2026

...
Visit https://weather.gc.ca for details

10.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

14:40 Feb 09 2026
SPECIAL WEATHER STATEMENT IN EFFECT for Southern Ontario
Expires: 06:40 Feb 10 2026
Period of snow expected Tuesday.

What:
Snowfall amounts of 5 to 10 cm.
Reduced visibility at times in heavy snow.

When:
Beginning Tuesday morning and ...
Visit https://weather.gc.ca for details

09.02.2026 23:27 — 👍 1    🔁 0    💬 0    📌 0

13:09 Feb 08 2026
YELLOW WARNING - COLD - IN EFFECT for Gatineau
Expires: 05:09 Feb 09 2026
A prolonged period of very cold wind chills continues.

What:
Wind chills of minus 35 to minus 40.

When:
Tonight into Monday morning.

...
Visit https://weather.gc.ca for details

08.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

15:30 Feb 07 2026
YELLOW WARNING - COLD - IN EFFECT for Northern Ontario
Expires: 07:30 Feb 08 2026
A period of very cold wind chills is expected.

...
Visit https://weather.gc.ca for details

07.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:50 Feb 06 2026
YELLOW WARNING - SNOW SQUALL - IN EFFECT for Southern Ontario
Expires: 22:03 Feb 06 2026
Snow squalls expected this evening.

What:
Brief periods of near zero visibility in bursts of heavy snow and blowing snow.
Northwest winds gusting ...
Visit https://weather.gc.ca for details

06.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

16:18 Feb 05 2026
SPECIAL WEATHER STATEMENT IN EFFECT for Southern Ontario
Expires: 08:18 Feb 06 2026
Strong winds expected beginning Friday afternoon with local blowing snow possible.

What:
Strong winds with gusts up to 80 km/h possible.
Local blowing ...
Visit https://weather.gc.ca for details

05.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

01:18 Feb 04 2026
SPECIAL WEATHER STATEMENT ENDED for Southern Ontario
Expires: 02:18 Feb 04 2026

...
Visit https://weather.gc.ca for details

04.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

14:01 Feb 03 2026
YELLOW WATCH - SNOW SQUALL - ENDED for Southern Ontario
Expires: 15:01 Feb 03 2026
Snow squalls are no longer expected.


...
Visit https://weather.gc.ca for details

03.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

10:02 Feb 02 2026
SPECIAL WEATHER STATEMENT ENDED for Northern Ontario
Expires: 11:02 Feb 02 2026

...
Visit https://weather.gc.ca for details

02.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0

15:55 Feb 01 2026
YELLOW WARNING - COLD - IN EFFECT for Southern Ontario
Expires: 07:55 Feb 02 2026
A period of very cold wind chills is expected.

What:
Wind chills near minus 30.

When:
Overnight into early Monday morning.

...
Visit https://weather.gc.ca for details

01.02.2026 23:27 — 👍 0    🔁 0    💬 0    📌 0