National Weather Alerts


The NWA layer displays official weather warnings issued by national meteorological services across the map, color-coded by hazard severity.

Click any alert region to view full details: originator, headline, event type, affected location, validity period, and official instructions.

NWA

Filtering

Use the Hazard Type Filter to narrow the view to specific alert categories: Wind, Snow or Ice, Thunderstorm, Fog, High Temperature, Low Temperature, Coastal Event, Forest Fire, Avalanche, Rain, Flood, and Rain Flood. Select one or more types to isolate relevant alerts; leave unfiltered to view all active alerts.

Layer stack options
Layer stack - NWA

Opacity

Adjust the layer opacity slider to control how prominently alerts are displayed against the base map.