Yosemite was placed under a cold weather advisory by the National Weather Service on Tuesday at 10:40 a.m. The advisory is valid from 7 p.m. until Thursday Dec. 4, at 9 a.m.

The NWS Hanford CA said, “Very cold wind chills as low as 9 degrees below expected for elevations above 9000 feet.”

“The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. Very cold temperatures can lead to hypothermia with prolonged exposure,” the NWS said. “Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.”

The full list of affected locations includes:

• Yosemite
• Upper San Joaquin River
• Kaiser to Rodgers Ridge
• Kings Canyon NP
• Sequoia NP
• South End of the Upper Sierra

Understanding cold weather alerts

Cold weather advisory: Be Aware. A cold weather advisory is issued when seasonably cold air temperatures or wind chill values, but not extremely cold values, are expected or occurring. Be sure you and your loved ones dress appropriately and cover exposed skin when venturing outdoors.

Extreme cold warning: Take Action! An extreme cold warning is issued when dangerously cold air temperatures or wind chill values are expected or occurring. If you are in an area with an extreme cold warning, avoid going outside. If you have to go outside, dress in layers, cover exposed skin, and make sure at least one other person knows your whereabouts. Update them when you arrive safely at your destination.

Extreme cold watch: Be Prepared. An extreme cold watch is issued when dangerously cold air temperatures or wind chill values are possible. As with a warning, adjust your plans to avoid being outside during the coldest parts of the day. Make sure your car has at least half a tank of gas, and update your winter survival kit.

For more local weather alerts, visit our Weather Advisory page