LOS ANGELES (AP) — A cold, dry air mass has settled over California in the aftermath of the storm that brought widespread rain and snow to the state.

The National Weather Service posted a freeze warning early Thursday for the Antelope Valley in the high desert north of Los Angeles. It was later reduced to freeze watch, but forecasters said several hours of temperatures as low as 27 would be possible early Friday.

Frost advisories were posted for portions of the Central Coast and areas north of San Francisco Bay.

In the Eastern Sierra, the Mammoth Mountain ski area opened a week early. The resort reported it was 16 degrees at the main lodge at 6 a.m.

Northeast of Los Angeles, Mountain High ski area was making snow and planned to open Friday