WATERLOO - Northeast Iowa has been inundated with rain since Saturday, and weather officials predict it could continue this morning.

As of about midnight Sunday, Waterloo had received 3.68 inches of rain since early Saturday, said Mark Schnackenburg, meteorologist at KWWL TV. The rainfall total for Charles City was 5.88 inches, he said. Toledo had 4.92 for the weekend total.

"It's still raining now," Schnackenburg said at 3 a.m. today, "so those totals will go up."

The rain caused creeks and rivers to rise, streets to fill and many basements in the area to flood.

The National Weather Service said a flood warning was issued Sunday for Black Hawk County to remain in effect until 2 p.m. today.

A warning was issued for the West Fork of the Cedar River near Finchford. Forecasts call for the river to crest Thursday at 13.5 feet. Flood stage is 12 feet.

At 9 p.m. Sunday, Beaver Creek in New Hartford was at 5.9 feet and rising. Flood stage there is 10 feet. The predictions call for the creek to rise to 9.7 feet by Tuesday.

The National Weather Service predicts the Cedar River in Waterloo will crest about 2 feet below flood stage early Thursday morning. The Wapsipinicon River in Independence will crest about 1 foot below flood stage Tuesday morning.

Forecasts also call for the Shell Rock River in Shell Rock to crest slightly below flood stage Tuesday.

The heavy rains Sunday caused field flooding throughout the area. There also was tornadic activity south and east of Black Hawk County.

Authorities said no injuries were reported after a tornado touched down Sunday afternoon in Linn County, causing damage to at least a half dozen homes and buildings and destroying campers at a campground, while other twisters may have touched down in Delaware and Dubuque counties in the northeast.

The Linn County twister touched down at about 4:53 p.m. east of Center Point and west of Central City.

Meteorologist Tom Philip said the tornado moved into Delaware County then lifted but may have touched down again on its way into Wisconsin. He said it uprooted trees, caused debris to blow around and was blamed for a propane tank leak.

Weather service officials couldn't immediately confirm how hard winds were blowing during the storm.

Mike Goldberg, Linn County's emergency coordinator, said the tornado swept through the northeast part of the county. Damage reports included campers destroyed at a campground near Central City and "significant" damage to about a half dozen residences and buildings in the twister's path.

Severe thunderstorm, tornado and flash flood watches and warnings lit up Iowa weather maps throughout the weekend.

As of late Sunday afternoon, only minor damage had been reported in western Iowa. That included boards being knocked from a building near Red Oak.

Strong to severe thunderstorms moved across the southern two-thirds of the state throughout the afternoon with some areas seeing nickel- to quarter-sized hail. Some power outages were reported in eastern Iowa.

The storms also dumped up to 7 inches of rain in western Iowa, causing flash flooding and sending rivers and creeks up.

Weather officials expect the showers and thunderstorms to move east out of Iowa today, with cooler and drier weather settling in by Tuesday.