CREEDE, Colo. -- The Wolf Creek Ski Patrol and at least one helicopter resumed the search Friday for two snowboarders missing since Saturday in the southwest Colorado mountains.

Michael George and Kyle Kershen were reported missing on Jan. 5, near the Wolf Creek ski resort about 170 miles southwest of Denver. Both are 27 and both are from Albuquerque, N.M.

Their car was found parked in the ski area's parking lot but there has been no sign of them in the area.

Mineral County Sheriff Fred Hosselkus asked anyone who may have seen the men before they disappeared to contact authorities. Sheriff's spokeswoman Sandy Kroll said missing-person fliers were being distributed in surrounding communities, and skiers and others were asked to look for any sign of them.

Kroll said Hosselkus has not said how long the search would continue. The men's families have asked authorities to keep looking.

New Mexico Gov. Bill Richardson on Friday ordered state police to send their helicopter to assist with the search. He said Hosselkus had accepted the help.

"I want to ensure that we are all doing all we can possibly do to assist law enforcement with this urgent search," Richardson said.

The search has been hampered by bad weather, including a storm that dropped up to 4 feet of snow. Another inch of snow was expected Friday, with temperatures in the 20s.