Watch/Warning Criteria by NWS WFO

• Winter Storm Watch - Issued within 12 - 48 hours of a winter event with at least a 50% chance of occurring.
• Blizzard Watch - Issued 12 - 48 hours before a possible blizzard with the probability of occurring at 50% or greater. A blizzard is defined as frequent wind gusts exceeding 35mph with heavy snowfall reducing visibility to less than 1/4 mile for at least 3 hours.
• Winter Weather Advisory - Issued within 36 hours of a winter event with at least an 80% chance of occurring, but when the threat doesn't exceed those of a winter storm warning.
• Winter Storm Warning - Issued within 36 hours of a storm for snow amounts of 2“+, 1/2”+ of sleet, and or 1/4“+ freezing rain.
• Blizzard Warning - Issued up to 36 hours before a potential blizzard with the probability of occurring at 80% or greater. A blizzard is defined as frequent wind gusts exceeding 35mph with heavy snowfall reducing visibility to less than 1/4 mile for at least 3 hours.

• Freezing Rain Advisory -
• Ice Storm Warning -

• Wind Chill Watch - Issued 12 - 48 hours before a time in which there is a 50% or greater chance the wind chill could be -10F or below.
• Wind Chill Advisory -
• Wind Chill Warning -

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