Monarch Mountain will not open on Tuesday, the Chaffee County ski area says, because of problems created by the more than a foot and a half of snow that has fallen there in the past 24 hours.

It marks the second day a Colorado mountain resort was forced to close because of the rare, potent storm dropping more than a foot of powder in the high country. Arapahoe Basin was also shuttered on Tuesday because of avalanche danger on Loveland Pass.

“The good news: it snowed all day and night yesterday (18″!),” Monarch said in a Facebook post Tuesday morning. “The bad news: Monarch will not open today. Monarch Pass is has been closed all night for avalanche control, preventing Monarch Mountain maintenance, food service, and grooming crews from reaching the mountain.”

U.S. 50 was closed by the Colorado Department on Transportation at about 2:15 p.m. Monday. The route, which takes motorists from Salida to Gunnison over Monarch Pass, remained closed as of 8 a.m. — some 15 hours later.

The resort said as of 7 a.m. Monday, 20 inches of snow had fallen in the past 24 hours, and 28 inches of snow in the past 48 hours. In the past week, Monarch has seen 68 inches of snow.

Monarch Mountain also closed last week because of a U.S. 50 closure.

Monarch Mountain will not open today. CDOT closed Hwy 50 all last night for avalanche control. Stay tuned for info about tomorrow. — Monarch Mountain (@MonarchMountain) January 10, 2017

Monarch Mountain told its patrons to stay tuned for information on opening status and conditions for Wednesday.

On Monday afternoon, Crested Butte Mountain Resort closed after more than a foot of snow fell throughout the day. Last week saw Crested Butte Mountain Resort harvest a state-leading 47 inches from a hydrological hammerdrop.

The resort’s powder-cam snow stake on Monday was buried beyond its 18-inch top by midday and the resort, struggling with a windy, damp and bountiful storm, made the very rare call of closing early.

Crested Butte reopened on Tuesday, but said it was working to get its terrain ready for skiers and boarders as soon as possible.

We are dedicated to opening terrain as quickly as possible today. Stay tuned for lift openings & terrain updates. We will be open #powderday — Crested Butte (@skicrestedbutte) January 10, 2017

The National Weather Service says snow is expected throughout the week in Colorado’s mountains as a series of storm systems pound the state.

Staff writer Jason Blevins contributed to this report.