A watch means the ingredients are there for severe weather. A warning means it is happening. But there are differences based on weather type.

Tsunami waves can also continue to impact coastlines hours after they first hit. As forecasts evolve, what's the difference between a tsunami warning, an advisory and a watch?

Tsunami waves can also continue to impact coastlines hours after they first hit. As forecasts evolve, what's the difference between a tsunami warning, an advisory and a watch?

The National Weather Service has issued an Extreme Heat Watch for much of the Portland metro area and an Excessive Heat ...

A watch means a tsunami might be coming and that there’s still uncertainty, and more information is needed. Watches are usually issued after distant earthquakes somewhere across the Pacific.