Hot and Humid Continues....
The calendar may say September, but people have been flocking to the beaches to escape the oppressive heat and humidity that has resided over the region for the past few days.Some of the hottest temperatures of the summer have occured over the last couple of days in Southern Ontario and around the Golden Horseshoe and will likely occur again today. Toronto reached a high of 34.5°C on Monday and that was the hottest temperature recorded in the city for the entire summer. Humidex values were also much higher, making it feel like 42.
Other cities such as Hamilton, St. Catharines and London were not far behind with temperatures in the low 30's with humidex values of 40 or more as well.
Humidex Advisories have been in effect from Environment Canada since Monday and will remain in effect for today.
A huge area of High Pressure is responsible for the hot and humid airmass that is over Southern Ontario. Just look at the size of the area of high on the surface map, extending from the Gulf of Mexico right up into the province of Quebec.
Southwesterly flow is pumping extra moisture into the region as well keeping dewpoints high and humidex values into the high 30's and low 40's. These are the types of highs we usually see in mid-summer that give us the hottest temperatures and extended periods of hazy sunshine.
Much Cooler for the Long Weekend...
A cold front approaching from the west will move through the regions on Thursday and this will help to clear the air so to speak. Much cooler temperatures behind the front will move in for Friday and the weekend. In fact, Saturday appears to be the coolest day with daytime high's only in the mid teens giving a real sense that Fall is just around the corner. Current forecasts suggest high teens will last into Labour Day before a warming trends takes hold for next week.
Hurricane Earl
Hurricane Earl, a Category 4 Hurricane, with maximum sustained winds of 217km/h is affecting the islands in the Carribean. Earl is expected to make a northerly turn and move up the eastern seaboard and has the possibility of impacting Nova Scotia sometime Friday or Saturday. Current model guidance suggests the path will take it right over the province and may make landfall as a Category 1 Hurricane. Right behind Earl is Tropical Storm Fiona. Barley a Tropical Storm at 60km/h sustained winds, Fiona is expected to take a similar path of Earl, but is not expected to be nearly as strong.
Yesterday's Observed High and Low Temperatures:
Toronto 33° / 23°
Hamilton 31° / 19°
St.Catharines 33° / 20°
London 31° / 18°
Windsor 33° / 24°
Muskoka 30° / 16°
The calendar may say September, but people have been flocking to the beaches to escape the oppressive heat and humidity that has resided over the region for the past few days.Some of the hottest temperatures of the summer have occured over the last couple of days in Southern Ontario and around the Golden Horseshoe and will likely occur again today. Toronto reached a high of 34.5°C on Monday and that was the hottest temperature recorded in the city for the entire summer. Humidex values were also much higher, making it feel like 42. 
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