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Understanding Blizzard Warnings: A Guide for Non-Technical Users

June 17, 2026 · The Clime Team
Understanding Blizzard Warnings: A Guide for Non-Technical Users

Blizzards are severe winter storms characterized by heavy snowfall or blowing snow, strong winds, and reduced visibility. In the United States, the National Weather Service (NWS) issues Blizzard Warnings to alert the public about these dangerous conditions.

What is a Blizzard Warning?

A Blizzard Warning is issued when the following conditions are occurring or expected within the next 12 to 18 hours:

  • Reduced Visibility: Snow and/or blowing snow reduce visibility to 1/4 mile or less for at least three hours.

  • Strong Winds: Sustained winds of 35 mph or greater, or frequent gusts to 35 mph or greater.

It's important to note that there is no specific temperature requirement for a Blizzard Warning. The primary factors are the combination of snow and wind leading to poor visibility and hazardous conditions. (weather.gov)

How Are Blizzard Warnings Issued?

The NWS monitors weather patterns and issues Blizzard Warnings when the criteria mentioned above are met. These warnings are typically issued 12 to 18 hours in advance to give the public time to prepare. The NWS uses various tools, including weather satellites, radar, and ground observations, to assess conditions and make these determinations. (weather.gov)

What Should You Do When a Blizzard Warning Is Issued?

During a Blizzard Warning, it's crucial to take the following precautions:

  • Avoid Travel: If possible, stay off the roads. Blizzards can create whiteout conditions, making driving extremely dangerous.

  • Stay Informed: Keep updated with the latest weather information from reliable sources.

  • Prepare an Emergency Kit: Ensure you have essentials like food, water, medications, and warm clothing in case of power outages.

  • Check on Vulnerable Individuals: Make sure neighbors, especially the elderly or those with health concerns, are safe and have necessary supplies.

By understanding Blizzard Warnings and taking appropriate actions, you can significantly reduce the risks associated with these severe winter storms.

Highlights:

  • Winter Weather Warnings, Watches and Advisories
  • Winter Weather Preparation
  • Safety - Winter Definitions

Frequently Asked Questions