There is an increased threat for tropical systems to impact Atlantic Canada during fall 2012.
"With the warmer water off Atlantic Canada, any tropical systems will have a greater chance of maintaining strength compared to normal as they move northward. Look for at least one named storm to threaten coastal Nova Scotia or Newfoundland," AccuWeather Expert Senior Meteorologist Brett Anderson said.
More storms are expected to recurve, passing the U.S. and heading toward Atlantic Canada, especially during the middle of fall, Anderson added.
Above-normal precipitation is forecast for Nova Scotia and Newfoundland for the season with tropical impacts factored in. Rough, battering surf and damaging winds may be other threats.
The unusually warm ocean water off the coast of Atlantic Canada will influence warmer temperatures and humid conditions for the region.
Temperatures should also run above normal across much of Ontario and southern Quebec, including the major cities of Montreal, Quebec City, Ottawa and Toronto.
Less rain than usual is predicted for the Ottawa, Toronto and Windsor areas, following a dry summer across parts of Ontario.
Anderson is forecasting a later-than-normal frost or freeze for eastern Canada.
However, with above-normal water temperatures of the Great Lakes, there is a greater potential for more intense lake-effect snow outbreaks if enough cold air arrives.
Farther north, dry, mild weather may mean a slow start to winter sports such as skiing and snowmobiling across northern and central portions of Ontario and Quebec.
A predominantly northwesterly flow will promote a fairly calm and quiet fall for the Canadian Prairies. Near-normal temperatures and precipitation are expected.
"Winnipeg, Manitoba, and Saskatoon and Regina, Saskatchewan, will have a pleasant fall," Anderson said. After very wet weather recently, the dry and mild fall may be welcomed by residents.
Dry weather should also dominate southwestern British Columbia with below-normal temperatures across western Canada.
"Large highs coming down from Yukon will bring quick shots of chilly air into British Columbia this fall," Anderson explained. Departures of 1-2 degrees C (2-4 degrees F) below normal are possible for the season. Interior British Columbia may have an early frost or freeze as well.
Vancouver will be drier and slightly cooler than normal.
The latter part of the fall should please avid skiers and winter sports enthusiasts that frequent resorts in the western mountains as the British Columbia snow base should get established on schedule.
The 99th running of the Indianapolis 500 is set to take place on Sunday afternoon, but showers and thunderstorms may make an unwelcome appearance.
After a cooler and dry start to the holiday weekend, a surge of warmth will greet most Memorial Day cookouts and activities in the mid-Atlantic.
Memorial Day marks the unofficial start to summer, but the summer warmth set to dominate the Northeast next week will not be here to stay.
California farmers with century-old water rights in the San Joaquin River Watershed will no longer be able to draw water from the river as a result of the state's historic drought.
Dry weather will be the rule in Charlotte, North Carolina, this weekend, the site of this week's NASCAR race.
It might feel more like late October rather than late May in the Northeast on Friday night as temperatures dip well below normal.
San Antonio, TX (1998)
Very dry since April 1st - only 0.05 of rain.
Hallam, NE (2004)
The "Hallam" tornado touched on the ground for 2.5 miles and reached F4 status at it's peak intensity. 95% if the town of Hallan's buildings were damages or destroyed.
New Brunswick, NJ (1804)
Tornado destroyed 2 barns, 1 hotel and 3 houses. "The damage done in this village cannot be less than $1,500 or $2,000." New York Evening Post, June 5, 1904.