Great swimming/boating/fishing weather next week in the east
Much of eastern Canada will experience above- to much above-normal temperatures from Monday through Thursday next week as a strong ridge of high pressure aloft builds across the region and forces the jet stream well to the north.
This ridge will also keep a pretty good lid on thunderstorm activity as the air aloft will be warm, which prevents clouds from growing into big thunderstorms during the day.
However, there will still be some spotty late-afternoon thunderstorms across Ontario and Quebec during the period, especially where large lake breezes interact with a land breeze. Any thunderstorms that do form will be slow-movers with the potential for heavy, localized rainfall.
More long-range forecast clues for the upcoming fall and winter
The U.S. based Climate Prediction Center (CPC) has released an update of their experimental NMME, which is a multi-model ensemble forecast which goes out into the winter. We also have the IMME (international based multi-model) forecast for the upcoming fall, but not the winter quite yet.
Below are the predicted temperature and precipitation anomalies for the fall and winter. Again, these are useful tools, but certainly do not treat these as gospel. Model performance drops significantly going out two months and beyond, but the science is getting better and the development of a multi-model ensemble is great idea.
NMME temperature forecast for fall 2013
NMME precipitation forecast for fall 2013
IMME temperature forecast for fall 2013
IMME precipitation forecast for fall 2013
NMME temperature forecast for winter 2013-14
NMME precipitation forecast for winter 2013-14
By the way, AccuWeather.com will be issuing our own fall 2013 forecast in August.
Summerlike temperatures for Ontario and Quebec into the weekend.
A look at the long-range and an update on the rainfall for the drought and wildfire areas of Alberta and eastern BC.
The upcoming summer will be very warm across large portions of Canada.
Heavy rain and snow could bring significant relief to portions of the drought and fire ravaged areas of northwestern Alberta Wednesday night into Friday morning.
Forecast clues into the second week of June.
My latest thoughts on the weather pattern across Canada for the next couple of weeks.