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National Oceanic and Atmospheric Administration

The National Oceanic and Atmospheric Administration is the part of the U.S. Department of Commerce that studies and forecasts the weather, oceans, and climate. It runs the National Weather Service, operates satellites and research ships, charts coasts, and manages fisheries and marine resources. Forecasters, researchers, mariners, and emergency managers use its data.

People usually bring questions about how forecasts and severe weather alerts work and what weather terms mean. Others ask how to get warnings, how climate findings are produced, and how the agency supports emergency response and coastal communities.

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October 5last updated

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Latest in National Oceanic and Atmospheric Administration

National Oceanic and Atmospheric Administration

The Future of the National Climate Assessment

The National Climate Assessment sits somewhere between a scientific triumph and a political punching bag. Required by law, written by hundreds of experts, and reviewed by…

National Oceanic and Atmospheric Administration

Climate Predictions for the Next Decade

Our planet's climate is changing faster than at any point in modern history. As we look ahead to the next ten years, understanding these changes will…

All Articles on National Oceanic and Atmospheric Administration

What Do Precipitation Percentages in Weather Forecasts Actually Mean?

Precipitation percentages describe a chance of rain or snow. Their time window, expected amount and location explain what the forecast means for outdoor plans.

10 Min Read

Weather Watch vs. Warning: Key Differences Explained

How the National Weather Service uses a watch to mean dangerous weather is possible and a warning to mean it is happening, and what to do when each is issued.

32 Min Read

Understanding the Winter Storm Severity Classification System

The National Weather Service's Winter Storm Severity Index (WSSI) provides a way to understand not just if winter weather is coming, but how significant…

18 Min Read

Steps to Becoming a Certified Weather Spotter

Weather spotter training connects volunteers with the National Weather Service. Local enrollment, reporting instructions and safety shape how to participate.

15 Min Read

Sign Up to Receive Severe Weather Alerts

This guide explains how to sign up for weather alerts, which systems work best for different situations, and how to make sure you never…

32 Min Read