squall warning in effect
发布日期：2026-07-18T17:00+00:00
Squalls with wind gusts up to 45 knots, frequent lightning and waterspout activity are expected or occurring in the area.Areas of thunderstorms are moving southeast at roughly 35 knots near the west end of Lake Ontario.###Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
yellow warning - air quality - in effect
发布日期：2026-07-18T14:07+00:00
Poor air quality and reduced visibility due to wildfires will improve gradually this morning.After a break of a few hours this afternoon, poor air quality may return by this evening and persist into Sunday morning. A major improvement is expected on Sunday.###As smoke levels increase, health risks increase. Limit time outdoors. Consider reducing or rescheduling outdoor sports, activities and events.You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance.People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should reduce or reschedule strenuous activities outdoors and seek medical attention if experiencing symptoms.For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666.Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values.Please continue to monitor alerts and forecasts issued by Environment Canada.
squall watch in effect
发布日期：2026-07-18T13:06+00:00
Conditions are favourable for the development of squalls with wind gusts up to 55 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times.Thunderstorms are expected today with strong wind gusts. The strongest thunderstorms are expected this afternoon as a cold front moves through from the northwest.###Large hail can damage vessels and cause injury.Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
yellow watch - severe thunderstorm - in effect
发布日期：2026-07-18T16:24+00:00
Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain.What:Wind gusts up to 110 km/h.Quarter to ping pong ball sized hail.Rainfall amounts 25 to 40 mm.When:Beginning near noon into this afternoon. Additional Comments:A cold front over Michigan is expected to bring a line of thunderstorms as it moves southeast over the area today. The strongest thunderstorms are expected early this afternoon.###Driving conditions may be difficult. Local utility outages are possible. Damage to roofs, fences, branches or soft shelters is possible.Heavy rain can cause flash flooding and significant reductions to visibility. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.For more information: https://www.ontario.ca/page/be-prepared-emergency.
orange warning - air quality - in effect
发布日期：2026-07-18T09:28+00:00
Smoke from wildfires in northwestern Ontario will continue to result in very poor air quality this morning. There may be some improvement later this morning into this afternoon. However poor air quality may return tonight.During heavy smoke conditions, everyone's health is at risk regardless of their age and health status. Consider limiting time outdoors. Coaches, sport officials and outdoor event and activity organizers should assess local air quality conditions and consider the level and type of activity involved, as well as the needs of participants and spectators into their planning decisions.###You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance.People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms.For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666.Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values.Please continue to monitor alerts and forecasts issued by Environment Canada.
