What is the difference between a watch, a warning and an advisory?
A Weather Watch alerts you that conditions are favourable for the development of severe weather. Watch the skies and be aware of updated watches and possible weather warnings. A Weather Warning alerts you that severe weather is occurring or that hazardous weather is highly probable. Severe thunderstorm or tornado warnings may be issued less than one hour in advance. Other weather warnings may be issued six to 12 hours in advance. A Weather Advisory means actual or expected weather conditions may cause general inconvenience or concern, but do not pose a serious enough threat to warrant a weather warning. An advisory may also be used when conditions show signs of becoming favourable for severe weather when the situation is not definite enough or too far in the future to justify a warning.
