Wx Centre

As temperatures begin to cool, the first frost of the season can be an important sign that summer is coming to an end. Frost forms when surfaces near the ground cool to or below the freezing point of water — 0 C — allowing water vapour in the air to freeze into tiny ice crystals. Unlike snow, frost does not typically fall from the sky. Instead, it forms directly on surfaces such as grass, car windshields, rooftops and outdoor plants. Clear and calm nights are often the best c

Severe thunderstorms swept across parts of southern Ontario on Wednesday, bringing large hail, damaging winds, heavy rainfall and a confirmed tornado, according to Environment and Climate Change Canada. The storms were most intense across the Greater Golden Horseshoe and southwestern Ontario, with multiple severe weather alerts issued during the afternoon and evening. Environment Canada said one of the strongest storms moved southeastward from Lake Huron through the Kitchener

A large portion of Ontario is facing the potential for severe thunderstorms Wednesday afternoon and evening, with damaging winds, large hail, tornadoes and torrential rainfall all possible. The greatest risk is expected across southwestern and central Ontario and the Golden Horseshoe, where the thunderstorm environment has the potential to be among the strongest seen in the area this year. The strongest storms are expected during the afternoon and early evening. Storms in the

This month, Venus will continue to be the evening star. The Moon will sit above Uranus on September 3 and will be to the right of Venus on September 13 and left of Venus on September 14. On September 26, the Moon will be above Saturn. Nepture reaches opposition on September 25 and will be to the upper right of Saturn. Moon Phases: Last Quarter: September 4 New Moon: September 10 First Quarter: September 18 Full Moon: September 26

Hot and humid conditions are expected to continue across parts of southwestern Ontario on Tuesday, with the highest temperatures forecast in the extreme southwestern portion of the province. An ongoing heat event is expected to bring daytime highs of 30 to 32 C to extreme southwestern Ontario, with overnight lows of 20 to 22 C. Humidex values are expected to reach the mid to upper 30s. The conditions are expected to increase the risk of heat-related illness, including possibl

Tropical Storm Edouard has strengthened in the Gulf of Mexico, and additional intensification is expected before the system reaches the northwest Gulf Coast on Tuesday. According to the U.S. National Hurricane Center's 7 p.m. CDT advisory Monday, Edouard is located about 225 kilometres southeast of Cameron, Louisiana, and about 280 kilometres southeast of Port Arthur, Texas. The storm has maximum sustained winds of 65 km/h, with higher gusts, and is moving west-northwest at a