Fair, dry conditions settled over the Northeast early today while showers and thunderstorms moved in over parts of the Ohio and Tennessee Valleys.

Storms with the possibility of severe conditions were forecast over Wisconsin, Michigan, Illinois, Indiana and Ohio, with weaker storms predicted elsewhere in the region.

Rains this week have led to flooding in regions including Iowa, where hundreds of residents along the Cedar River have been evacuated after the river crested at record levels Thursday and Friday.

Thunderstorms in Wisconsin on Friday knocked out power to some residents and prompted authorities to issue warnings to boaters about fast-flowing rivers.

Hot, muggy conditions were expected to remain over the Southeast with a chance of thunderstorms later in the day.

Showers and thunderstorms _ some with the chance for hail and strong winds _ were forecast in parts of the northern Plains, including Minnesota, Iowa, South Dakota, Nebraska and Missouri.

Hot, humid, dry conditions were expected to remain over the central and southern Plains, while some showers were forecast over areas of the Southwest and Northwest.

Shifting winds Friday fanned a wildfire in northern California that has consumed over 10,800 acres. The fire has burned for six days and was expected to be contained by Sunday, authorities said.

Highs today were forecast in the 70s and 80s in the Pacific Northwest and into the 80s and 90s for most other regions of the country. Highs were forecast in the 100s in the Southwest and some regions of the central and southern Plains.

Temperatures across the Lower 48 ranged from 108 degrees in Blythe, Calif., to 33 degrees in Stanley, Idaho.