A snow squall warning is a weather bulletin issued by Environment Canada and the National Weather Service in the United States. It alerts the public to the imminent threat of reduced visibility due to blowing snow from either lake effect snow squalls or frontal snow squalls. The warning serves as a crucial notification to take precautions and avoid travel if possible, as these conditions can lead to hazardous driving and quickly changing weather situations.
February 2, 2018: Snow Squall Warning Example
On February 2, 2018, the US National Weather Service in Binghamton, New York, issued a snow squall warning.
November 1, 2018: Snow Squall Warning Declared Operational
On November 1, 2018, snow squall warnings were declared operational in the United States. The capability to issue these warnings was rolled out to all National Weather Service (NWS) offices in the US, designed to warn drivers of potentially life-threatening road conditions, and are issued in a polygon area.
2023: NWS uses Impact-Based Warnings
In the 2023-2024 winter season, the National Weather Service started using Impact-Based Warnings for snow squall warnings. Only warnings tagged 'Significant' will trigger a Wireless Emergency Alert, while 'General' warnings will not.
2024: NWS uses Impact-Based Warnings
In the 2023-2024 winter season, the National Weather Service started using Impact-Based Warnings for snow squall warnings. Only warnings tagged 'Significant' will trigger a Wireless Emergency Alert, while 'General' warnings will not.
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