AreaZineGuides
Guides to the warning levels
Each agency has its own words for how serious a notice is. These guides explain them from the agencies' own definitions, with how often each level is issued.
Updated
- Warning, watch or advisory? The NWS levels, with the counts
- FEMA declaration numbers: DR, EM and FM
- Earthquake magnitude, intensity and felt reports
- Advice, Watch and Act, Emergency Warning (Australia)
- Flood alert, flood warning or severe flood warning (England)
- Environment Canada's yellow, orange and red alerts
- Recalls in Canada, the U.K. and Australia
Source: National Weather Service directives; FEMA; USGS Earthquake Hazards Program; Environment Agency; Environment and Climate Change Canada; Australian Warning System.