A cold snap blanketed western Washington Saturday dipping temperatures to levels that haven't been felt in months.

Residents are being advised to bundle and prepare for the cold weather.

And health experts warn these temperatures can be dangerous.

Hypothermia occurs when the body loses heat faster then it can make it.

The warning signs are:
-shivering
-clumsy movements
-a lack of concern
-poor judgment
-cold pale or blue gray skin

Extended exposure to this cold without protection can lead to frostbite, that's when body tissue freezes.

The most commonly affected areas are the nose, cheeks, ears, fingers and toes and everyone is susceptible.

If it happens, experts say get medical attention as soon as possible.

Local leaders also want to remind people that barbecue grills and emergency generators should never be operated indoors.

Doing so could cause fatal carbon monoxide poisoning.

If you lose power, dress in layers to stay warm and seal up drafty windows and doors to slow the loss of heat in your home.