Brett Anderson

Warm Pattern Setting Up in the East Next Week

May 20, 2014; 7:11 PM ET

Cool weather will gradually give way to a warm pattern in eastern Canada next week as the last in a series of chilly troughs gets pushed out.

Highlights into next week

1. Parts of southwestern Ontario could see a cluster of heavy thunderstorms coming through very late tonight into Wednesday morning with plenty of lightning. This includes the city of Windsor.

2. Heat will surge into the southern Plains Friday with afternoon temperatures reaching at least 28 degrees in many areas and 30 degrees in a few spots. A much cooler pattern will return by the middle of next week.

Projected temperature anomalies for Sunday in degrees F. from the GFS model ensemble..

3. Strong to severe thunderstorms are possible Saturday afternoon and evening from southeastern Saskatchewan through southern Manitoba. Does not look like a setup for tornadoes at this time.

4. Very warm period shaping up from southern Ontario through southern Quebec from Monday to at least Wednesday next week with areas away from the lakes reaching at least 27 C.

5. Persistent troughs setting up over Atlantic Canada through the end of this weekend will keep that region cool with showers from time to time.

6. British Columbia will see cooler than normal temperatures from this Friday into at least the first half of next week with a series of Pacific fronts bringing some showers from time to time. However, signs still point toward a much warmer and drier pattern setting up in June.

7. No major, widespread rainstorms expected across southern Canada for the next week.

8. The threat for a freeze is now greatly diminished for southern Ontario, Quebec.

The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com

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