Officials are monitoring a four-mile-long ice jam on the Androscoggin River in Rumford as warm air is predicted to move into the region Friday, bringing rain and melting snow.

The National Weather Service office in Gray said in a statement Thursday afternoon that “moderate to heavy rainfall and melting snow may lead to flooding on rivers and streams late Thursday and Friday. Rainfall of 1 to 1 inches is possible, the agency advised.

Rumford Deputy Fire Chief Scott Holmes said Thursday night that the potential for flooding exists along the river, where ice is near the top of the banks.

The jam was first reported Dec. 24 and extends from the boat launch near McDonald’s restaurant west four miles to Rumford Center.

“It’s been there quite a while,” he said. “It was scary,” he said, describing the situation he saw on Christmas Eve. The water level has since dropped, with ice several feet thick, he said.

“This is what we see more toward the spring,” he said. “We’ll keep an eye on it.”

Wednesday’s storm moved into the area as snow initially, then switched off and on to sleet and freezing rain.

There were no major injuries or incidents because of it, according to emergency dispatchers in Androscoggin, Cumberland, Franklin and Oxford counties and the Maine State Police in Gray on Wednesday night.

In the Twin Cities and surrounding towns, cars slid off roads, into poles and into each other, but police said no serious accidents had been reported. Farmington police officer Darin Gilbert said he handled a minor accident about 1:30 p.m.

“All accidents are avoidable if you drive to the conditions of the weather,” Gilbert said.

Weather observer Sheila Pike of Farmington said a light snow started in the Fairbanks section of town about 10:45 a.m., and the temperature had risen from 4 degrees to 14.

In Rangeley, weather observer Tom Haggan said there was less than an inch of snow by dark.

“So far no rain,” he said.

The Rangeley Lakes area has about 10 to 12 inches of snow cover in most places, he said.

Jay canceled school Wednesday, and SAD 9 in Farmington and SAD 36 in Livermore Falls dismissed students early.

Paris police responded at 4:05 p.m. to a vehicle off the road on Route 119.

The Oxford County Sheriff’s Department responded to a report of a rollover accident at 79 High St. in West Paris at 5:30 p.m.

Dixfield Patrolman Mark Dow said, “The roads are rough, but they aren’t so bad.

“It’s just snow, so far,” he said at 5:35 p.m.

Rumford police handled two minor accidents, and a tractor-trailer with problems negotiating Route 2 on Falls Hill.