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  2. Southern states declare emergencies ahead of potentially ...

    www.aol.com/coldest-wind-chills-years-threaten...

    The dangerous cold, multiple snowstorms and California’s devastating wildfires have caused an emergency shortage of platelets and some blood types at the American Red Cross. The hazardous ...

  3. Here’s how long it takes to freeze to death: The dangerous ...

    www.aol.com/news/long-takes-freeze-death...

    At least one person died from hypothermia: a dangerous condition that can occur when a person is exposed to extreme cold temperatures. The cold weather presents major threats to people of all ages.

  4. Cold weather advisory - Wikipedia

    en.wikipedia.org/wiki/Cold_weather_advisory

    A cold weather advisory (formerly known as a wind chill advisory until October 2024) [1] is a hazardous weather statement issued by Weather Forecast Offices (WFO) of the National Weather Service (NWS) in the United States to alert the public that temperatures or wind chills are forecast to reach values low enough that it poses a threat to human health and life if adequate protection is not ...

  5. Prolonged polar vortex grips much of US with brutal life ...

    www.aol.com/prolonged-polar-vortex-much-us...

    A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation and sends temperatures tumbling to levels not ...

  6. Winter storm - Wikipedia

    en.wikipedia.org/wiki/Winter_storm

    Severe winter weather conditions called "winter storms", can be local weather fulfilling the criteria for 24 hours, or large storm systems covering part of a continent for several days. With large, massive winter storms, weather in any part of the area covered by the extreme weather is usually called "storm"; even if meteorological criteria for ...

  7. List of severe weather phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_severe_weather...

    Severe weather can occur under a variety of situations, but three characteristics are generally needed: a temperature or moisture boundary, moisture, and (in the event of severe, precipitation-based events) instability in the atmosphere.

  8. What Is Wind Chill And What Makes It So Dangerous? - AOL

    www.aol.com/news/wind-chill-makes-dangerous...

    The simple interpretation of the wind chill is how cold the air feels when the wind is factored in. This is the winter counterpart to the "heat index" when it comes to "feels-like" temperatures.

  9. Extreme weather - Wikipedia

    en.wikipedia.org/wiki/Extreme_weather

    A cold wave is a weather phenomenon that is distinguished by a cooling of the air. Specifically, as used by the U.S. National Weather Service, a cold wave is a rapid fall in temperature within a 24-hour period requiring substantially increased protection for agriculture, industry, commerce, and social activities. The precise criterion for a ...