ALPENA, Mich. (AP) _ The unseasonably warm weather being enjoyed in the upper Midwest forced part of Bruce Willis' ''Die Hard II'' production crew out of town and north to Kinross on Michigan's Upper Peninsula.

Twentieth Century Fox sent Willis and most of the production crew back to Los Angeles over the weekend when the warm weather melted snow in Alpena needed for the winter action movie.

The temperature rose from 5 below zero March 6 into the 60s within four days.

Alpena itself was a substitute location for Moses Lake, Wash., where warm weather last month plagued producers. In January, a heat wave interfered with planned filming at Denver's Stapleton International Airport.

Location manager Greg Lazzaro said producers shot only about half of the planned winter blizzard scenes at the Alpena County Regional Airport before snow stopped falling.

''We could not film in the rain, and if it continued, we would be sitting around,'' Lazzaro said Monday.

Beginning Wednesday, ''Die Hard II'' stunt doubles and a secondary crew will work out of the old Kincheloe Air Force Base at Kinross. There's still at least a foot of snow at the one-runway airport, said Joyce DeWitt, who works for a charter service there.

''It's gonna take a lot of rain to wash all this snow away,'' DeWitt said Tuesday.

A few ''Die Hard II'' crew members remained in Alpena, about 230 miles north of Detroit, on Tuesday but the prospect of snow and cold returning anytime soon were not good. Even so, producers told Karen Pettalia of the Alpena Chamber of Commerce that they would be back sometime next week to finish shooting there.