A blizzard is defined by the National Weather Service as a storm with large amounts of snow or blowing snow that meets the following three criteria:

1. Large amounts of snow that  lasts three hours or more.                             
2. Winds greater than 35 mph.
3. Visibility of less than 1/4 miles away.

An ice storm occurs most often when the air temperatures is at or just above freezing (32-38 degrees) Ice storms can be extremely dangerous because the freezing rain makes an icy glaze on roads and other outdoor surface. Since the ice is often hard to see, you need to take extreme precautions while walking during an ice storm. You should avoid driving during an ice storm whenever possible.

A severe storm is defined as one that produces six inches or more of snow in 48 hours or less, or damaging ice over 5,000 square miles.

Familiarize yourself with these terms to help identify a winter storm hazard:

• Freezing Rain - Rain that freezes when it hits the ground, creating a coating of ice on roads, walkways, trees and power lines.
• Sleet - Rain that turns to ice pellets before reaching the ground. Sleet also causes moisture on roads to freeze and become slippery.
• Winter Weather Advisory - Winter weather conditions are expected to cause significant inconveniences and may be hazardous. When caution is used, these situations should not be life threatening.
• Winter Storm Watch - A winter storm is possible in your area. Tune in to NOAA Weather Radio, commercial radio, or television for more information.
• Winter Storm Warning - A winter storm is occurring or will soon occur in your area.
• Blizzard Warning - Sustained winds or frequent gusts to 35 miles per hour or greater and considerable amounts of falling or blowing snow (reducing visibility to less than a quarter mile) are expected to prevail for a period of three hours or longer.
• Frost/Freeze Warning - Below freezing temperatures are expected.         

Do not overexert yourself when outdoors in the cold weather.   The American Heart Association says the strenuous activity of shoveling snow can take a toll on your body and can actually increase your chances of having a heart attack. Even if you think you are ok, someone else may experience difficulties.  t is a good idea to take an American Red Cross CPR/First Aid/AED course to learn life saving skills in case of an emergency.  You should also reach out to an elderly neighbor to make sure they do not need any assistance during a storm.

Tips During Winter Storms & Extreme Cold.

Winterize Your Home.

Tormentas invernals (Ready.gov; Spanish version, Winter Weather)