Canadian Weather Blog
Summer Basically Over for Western Canada
Aug 23, 2010; 7:08 PM ET
Based on short-range and long-range computer models, it appears that we can basically put a fork in summer 2010 for much of western Canada. While there will be a brief surge of very warm air into the southern Prairies late this week, it will be short-lived, as the second in a series of unseasonably cool air surges quickly arrives over the weekend.
Long-range models continue to show a mean trof (pocket of cold air aloft) across western Canada over the next 10-15 days, and that already takes us close to the second week of September, and I do not see any significant change after that as well.
On the flip side, after a period of cool weather, I see a significant, long-lasting period of abnormal warmth across eastern Canada beginning this weekend and continuing through next week. It could also get very dry, especially from Ottawa and Montreal on south. Summer is not even close to done in eastern Canada.
Here are my highlights for the rest of this week.

I will be out of the office the rest of this week.
The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com
More Brett Anderson
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Long-Range Clues through Mid-June
May 18, 2012; 12:05 PM ET
This is my latest interpretation of the ECMWF long range forecast through mid-June.
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Weekly Long Range Model Forecast Update
May 16, 2012; 8:44 PM ET
Here is my latest interpretation of the ECMWF weekly long range forecast system..........
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Updated Long-Range Model Forecast
May 8, 2012; 10:42 PM ET
Here is my latest interpretation of the weekly ECMWF long range model forecast that now goes out into early June......
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Weekly Update on the Long-Range Model Forecast
May 1, 2012; 9:14 PM ET
Here is my interpretation of the most recent update of the ECMWF forecast model system.......
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Beneficial Rainfall for the Western Prairies
Apr 26, 2012; 2:45 PM ET
The combination of a slow-moving front and a moist, easterly upslope wind flow will leave parts of the western Prairies with significant rainfall.....
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Long-Range Forecast Model Update
Apr 25, 2012; 11:54 AM ET
Here is my latest interpretation of the latest weekly ECMWF long-range forecast system.....
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Storm Snowfall Forecast Map Update
Apr 23, 2012; 2:56 PM ET
Just when you think summer has to be right around the corner... bam!
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Updated Long Range Model Forecast
Apr 19, 2012; 10:48 PM ET
The new weekly long range model data is in through a good chunk of May....
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El Nino Southern Oscillation Update
Apr 18, 2012; 2:32 PM ET
La Nina was barely hanging on as of early April and the transition to neutral ENSO conditions in the equatorial Pacific region should be complete by the end of this month.
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Updated Computer Model Forecast for the Summer
Apr 10, 2012; 9:31 PM ET
The updated ECMWF long range seasonal forecast was released yesterday
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Updated Snow Map and Weekly Long-Range Outlook
Apr 6, 2012; 10:41 AM ET
An update on the Saskatchewan snowstorm and my latest interpretation of the long range model forecast.
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Going from Record Warmth to Blizzard Conditions
Apr 5, 2012; 2:15 PM ET
The spell of amazing warmth will give way to heavy snow and strong winds over parts of Saskatchewan early Saturday.
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Updated Snowfall Forecast Map
Apr 4, 2012; 2:41 PM ET
Snow headed for western and northern Alberta....
About This Blog
Brett AndersonBrett Anderson covers both short-term and long-term weather and storm forecasts for Canada in this blog for AccuWeather.com.
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