Winter Weather Warnings vs Watches vs Advisories: Complete Guide
Learn the critical differences between winter weather watches, warnings, and advisories. Know when to take action and how to stay safe during winter storms.
When winter weather threatens, the National Weather Service issues various types of alerts. Understanding the difference between watches, warnings, and advisories can help you take appropriate action to stay safe.
Winter Storm Watch
A Winter Storm Watch is issued when conditions are favorable for a winter storm to develop. This typically means there's a 50% or greater chance of winter storm conditions occurring within the next 12 to 48 hours.
What to do: Start preparing now. Review your emergency supplies, fill prescriptions, and stay informed about weather updates.
Winter Storm Warning
A Winter Storm Warning is issued when a winter storm is occurring or is imminent. This is the most serious winter weather alert, indicating that heavy snow, ice, sleet, or a combination of these is expected.
What to do: Take immediate action. Avoid travel if possible, and if you must go out, inform others of your route and expected arrival time.
Winter Weather Advisory
A Winter Weather Advisory is issued when winter weather conditions are expected to cause significant inconveniences and may be hazardous. These conditions typically don't meet warning criteria but still require caution.
What to do: Exercise caution, especially when traveling. Allow extra time for your commute and drive carefully.
Blizzard Warning
A Blizzard Warning is issued when sustained winds or frequent gusts of 35 mph or greater are expected, along with considerable falling or blowing snow reducing visibility to less than 1/4 mile for three hours or more.
What to do: Avoid travel. Blizzard conditions are extremely dangerous and can be life-threatening if you become stranded.
Ice Storm Warning
An Ice Storm Warning is issued when significant ice accumulation is expected, making travel extremely dangerous or impossible and potentially causing widespread power outages.
What to do: Stay home if possible. Prepare for possible power outages and avoid downed power lines.
Quick Reference Guide
- Watch = Be Prepared (conditions are possible)
- Warning = Take Action (conditions are occurring or imminent)
- Advisory = Be Aware (conditions are expected but less severe)
Always monitor local weather forecasts during winter months and sign up for emergency alerts through your local emergency management agency or weather apps.