An independent severe weather aggregator.
Atmostorm unifies the data sources that matter for severe weather awareness — NWS alerts, SPC outlooks and watches, NEXRAD radar, GOES-16 satellite, upper-air soundings, HRRR model forecasts, and USGS river gauges — into a single live map and a free API.
It exists because the data is already public, but it's scattered across a dozen different interfaces, formats, and update cadences. Atmostorm does the aggregation, normalization, and deduplication so storm chasers, meteorologists, safety professionals, and anyone who wants to stay aware can see the whole picture.
What it is — and isn't
Atmostorm is not an official source. It's not affiliated with the National Weather Service, NOAA, or any government agency. It is an independent project that aggregates and presents data from official sources — always credited and always verifiable against the original feeds.
For any life-safety decision, the NWS is still the authoritative source. Atmostorm's role is to help you see what the sky is doing faster and more completely than scrolling through separate tabs.
Support the project
Atmostorm is free and plans to stay that way. It has real costs — servers, bandwidth, and some upstream data licenses at scale. If it's useful to you and you'd like to help keep it running (and keep it free for everyone), donations are the only revenue model.
Contact
Questions, bug reports, or feedback — reach out at hello@atmostorm.com.