US

Weather Underground Forecast for Saturday, September 04, 2010.

Hurricane Earl will reduce to a tropical storm on Saturday as it rapidly moves northeastward and will move over Nova Scotia. Expect strong winds ranging from 39-73 mph, with dangerous surf, and heavy rains spreading over the Northeastern US and eastern Canada. Rainfall totals will range between 1-3 inches across the coastal regions. To the south, Tropical Storm Fiona follows closely behind, as it is currently located about 165 miles south-southwest of Bermuda. This system will take a more northeastward track and stay well east of the East Coast. Fiona will reduce to tropical depression strength with winds up to 39 mph.

Moving inland, a low pressure system moving across the US and Canadian border will move eastward from the Great Lakes, into eastern Canada. The system will continue pulling a cold front through the Eastern US. Expect scattered showers and thunderstorms to develop along this front, with heaviest storms anticipated in the Northeast as Earl feeds moisture into the system from the Atlantic Ocean. The front has a history of producing severe storms with strong winds and hail. Strong storms will also develop in the South as moisture from the Gulf of Mexico feeds additional strength and energy in.

In the Plains, high pressure will build in behind the front and bring cool air in from the north. Expect another cool day with highs in the 60s across the Northern Plains and Upper Midwest, while the Southern Plains will remain in the 80s. Further West, cool conditions will return to the West Coast as a trough of low pressure moves into the Pacific Northwest. This will kick up overcast skies with scattered showers over Oregon and Washington. California will see a few coastal clouds but interiors will remain hot and sunny.

Temperatures in the Lower 48 states Friday ranged from a low of 27 degrees at Yellowstone, Wyo. to a high of 116 degrees at Thermal, Calif.