On Monday at 2 a.m. the National Weather Service released an updated cold weather advisory in effect until 8 a.m. for Del Norte Vicinity/Northern San Luis Valley below 8,500 ft, Alamosa Vicinity/Central San Luis Valley below 8,500 ft and Southern San Luis Valley.

The NWS states to be ready for, “Very cold wind chills as low as 20 degrees below.”

“The dangerously cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes,” adds the NWS. “Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.”

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.

Source: The National Weather Service