National park rangers and a high-altitude helicopter are working to rescue four injured climbers from Washington's Mount Rainier.

Mount Rainier National Park spokesman Kevin Bacher (BAA-ker) said a Chinook helicopter from Joint Base Lewis-McChord was working to pluck the climbers from the 13,700-foot level of the Cascade peak Thursday night as a storm rolled in with 30 to 40 mph winds.

Bacher says all four are injured but the injuries are not life-threatening.

The four were roped together and descending Thursday afternoon from the 14,411-foot summit when they fell on the Emmons Glacier. He says they stopped their fall but the two women at the end of the rope ended up in a crevasse. The two men above them on the rope stopped short of the crevasse.

The spokesman says rangers quickly responded to a cell phone call for help and all climbers are now clear of the crevasse.