Undated (AP) _ Driving rain and strong winds continued to pummel southern Florida as Tropical Storm Gordon hovered off the coast in the Gulf of Mexico this morning. An increasingly strong storm system sent snow swirling through several western states.

Gordon is centered about 115 miles south of Sarasota, Fla., and was expected to start moving slowly north-northeast today. Squalls threatened to produce tornados and much of central and southern Florida was under a tropical storm watch.

A tornado struck the Florida retirement community of Barefoot Bay on Tuesday night, killing one person and destroying hundreds of mobile homes. Debris was strewn throughout the small town about 145 miles north of Miami.

In the West, temperatures plummeted and snow was falling from Washington into Idaho and Utah. Gusty offshore winds were pushing cold air into Oregon and Washington.

About 8 inches of snow fell overnight at California's Donner Summit in the Sierra Nevadas, and winds blew up to 64 mph in Klamath Falls, Ore., and 55 mph in Casper, Wyo.

Locally heavy snowfall was possible in the Cascades, the Sierra Nevada, the Blue Mountains of northeast Oregon and the mountains of Utah and New Mexico.

Along the eastern edge of the huge front, blustery windy weather was expected from western Texas to Minnesota and North Dakota.

Damp warm weather was expected in much of the Southeast as tropical moisture presses inland from Gordon. Rains were expected from Savannah, Ga. to Cape Hatteras, N.C.

Sunshine was expected in the eastern Plains states and the Great Lakes region today.

Temperatures were expected to be in the 30s and 40s in the North; the 50s and 60s in the West, Midwest and East, and parts of Texas; 70s in the Southeast and Southwest deserts, and 80s in some spots in Florida.

The nation's hot spot Tuesday was Miami Beach, Fla., at 86 degrees; the cold spot was Yellowstone Park, Wyo., at minus 21 degrees.

Other reports at 5 a.m. EST (atmospheric conditions not available for many cities):

-East: Albany, N.Y., 37 partly cloudy; Atlanta 59 cloudy; Boston 46 partly cloudy; Buffalo 37 cloudy; Charleston, S.C., 67 cloudy; Chattanooga 47 partly cloudy; Cincinnati 45 rain; Cleveland 45 cloudy; Detroit 36 partly cloudy; Jacksonville 70 foggy; Key West 78 windy; Knoxville 49 cloudy; Macon 64 cloudy; Miami 78 windy; New York 49 partly cloudy; Philadelphia 49 rain; Pittsburgh 43 showers; Portland, Maine 32; Richmond 55 cloudy; Tampa 73 drizzle; Washington, D.C., 55 cloudy.

-Central: Birmingham 50 fair; Bismarck 39 windy; Chicago 40 partly cloudy; Denver 20 partly cloudy; Des Moines 29; Fort Worth 47; Indianapolis 44 rain; Kansas City 33; Little Rock 52 cloudy; Louisville 49 cloudy; Memphis 59 foggy; Nashville 56 drizzle; New Orleans 63; North Platte 34 partly cloudy; Oklahoma City 35; Omaha 29; Rapid City 37 cloudy; St. Louis 40; Minneapolis-St. Paul 28; Sault Ste. Marie 28 foggy; San Antonio 57 cloudy.

-West: Albuquerque 38 partly cloudy; Anchorage 18 cloudy; Boise 36; Casper 39 windy; Fairbanks 25 snow; Great Falls 32; Honolulu 78 partly cloudy; Las Vegas 46 cloudy; Los Angeles 58 cloudy; Medford 40 showers; Pendleton 43 rain; Phoenix 60; Portland, Ore., 44 cloudy; Reno 33 fair; Salt Lake City 43 cloudy; San Diego 53 partly cloudy; San Francisco 46; Seattle 43 windy; Spokane 34 rain.

-International: Ottawa 32; Regina 30 partly cloudy; Toronto 30 fair; Winnipeg 36 windy; San Juan 77 fair.