A New Hampshire hiker has disappeared after she set out on a popular trail in bone-chilling weather, authorities said.

Emily Sotelo, 20, was dropped off Sunday morning at Lafayette Place Campground in Franconia, with the intended hiking route of Mount Lafayette, Haystack and Flume, according to the New Hampshire Fish and Game Law Enforcement Division.

As temperatures in the area dropped to near zero, with 30- to 40-mph winds making the chill factor a frigid -30 degrees, Sotelo failed to return from the hike at the expected hour, and there have been no sightings of the woman.

Search and rescue crews scoured the ridge for the missing hiker throughout Sunday and continued looking for her Monday.

A National Guard Blackhawk helicopter was expected to assist in the search for the vanished hiker, station WMUR reported.

Daytime temperatures in Franconia were in the mid-20s with 9-mph winds Monday.

Sotelo, from Westford, Massachusetts, is 5 feet 3 inches tall and 115 pounds, with brown hair and blue eyes. She was last seen wearing a brown jacket and exercise pants.

Anyone with information on the hiker’s whereabouts is being asked to contact NH State Police Dispatch at (603) 271-1170.