Nov 9, 2026
GDACS, run by the European Commission and the United Nations, gives major disasters around the world a color. The colors are impact estimates for responders, not warnings for people in the area.
Nov 9, 2026
Every USGS volcano update starts with two labels. One is written for people on the ground, the other for pilots, and they usually change together.
Nov 8, 2026
The United States has four tsunami alert levels and two warning centers. Each level comes with a different action from the National Weather Service.
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