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Live Winter Storm Warning Tracker
Real-time winter storm warning tracking across all 50 states using official National Weather Service data and radar. We monitor each winter storm event's intensity, duration, and affected areas to keep communities informed and safe.
Live Winter Storm Map
Live Updates
NWS Winter Weather Events
The National Weather Service provides multiple types of alerts to help protect the public when dangerous winter weather conditions are expected or occurring.
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Active Winter Storm Warnings
Current Warnings
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Expired Warnings
Expired Winter Storm Warnings Map
Last 48 Hours
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Recent Expired Warnings
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Today's Outlook
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General Forecast
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This map provides a general weather outlook for today. For specific alerts, please refer to the live alerts map.
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General Forecast
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This map provides a general weather outlook for tomorrow. For specific alerts, please refer to the live alerts map.
View NWS Forecast MapsMap Guide
Understanding Our Winter Storm Warning Maps
WinterStormWarn delivers real-time tracking of various winter weather alerts through specialized interactive maps, helping you stay informed and safe during dangerous winter storm events.
Types of Winter Storm Alerts We Track
- •Winter Storm Warning: Take Action! A Winter Storm Warning is issued when significant winter weather is imminent or occurring. Heavy snow, ice, or blizzard conditions are expected that will make travel extremely dangerous or impossible.
- •Winter Storm Watch: Be Prepared! A Winter Storm Watch is issued when conditions are favorable for significant winter weather. Monitor forecasts closely and be prepared to take action if a warning is issued.
- •Winter Weather Advisory: Be Aware: A Winter Weather Advisory is issued when winter weather conditions are expected that may cause travel difficulties but are not typically life-threatening. Exercise caution when traveling.
Live Winter Storm Map
Displays active winter storm warnings with real-time radar.
What is a Winter Storm Warning?
A Winter Storm Warning means significant winter weather is imminent or occurring. Heavy snow, ice, or blizzard conditions are expected that will make travel extremely dangerous or impossible.
How To Use
- • Toggle radar layer
- • Adjust opacity for better visibility
- • Play/pause radar animation to track storm movement
Why It Matters
Combining winter storm warnings with radar helps you visualize active threats and understand storm movement in your area.
Recent Expired Warnings
Shows winter storm warnings from the past to analyze recent patterns.
How To Use
- • Review past warning polygons to see affected areas
- • Compare with current conditions using the map style selector
- • Click on any warning to view detailed information
- • Use radar overlay to see how storms tracked
Why It Matters
Historical data helps identify patterns and verify whether areas that received warnings were actually impacted by winter weather.
Map Controls Explained
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Radar Controls
Our radar layer shows precipitation intensity from light rain (blue) to intense storms (red/purple).
- • Animation controls let you play through the last hour of radar to track storm development and movement direction
- • Opacity control helps blend radar with other map features for optimal visualization
Our Data Sources
WinterStormWarn combines multiple official data sources to provide comprehensive winter storm monitoring:
National Weather Service Warnings
Official winter storm warning polygons with precise geographic boundaries.
RainViewer Radar
High-resolution radar imagery showing precipitation intensity and storm cells.
Mapbox Visualization
Professional mapping platform for interactive visualization and geographic analysis.
Data is automatically refreshed every 30-60 seconds for warnings (more frequently when active warnings exist) and every 5 minutes for radar imagery to ensure you have the most current information available.
Winter Storm Safety Tips
- • Avoid unnecessary travel during winter storm warnings.
- • Keep emergency supplies in your vehicle including blankets, food, and water.
- • Prepare your home with adequate heating and emergency supplies.
- • Stay indoors during blizzard conditions and heavy snowfall.
- • Monitor our live maps and local weather alerts during winter storm events.
Learn more at NOAA's Winter Weather Safety Guide