Atmostorm

Atmostorm is an independent weather-data aggregator that brings severe-weather information into one location-focused platform. Its live map combines National Weather Service alerts and forecasts with Storm Prediction Center outlooks, watches and discussions, NEXRAD radar, GOES-16 satellite imagery, upper-air soundings, HRRR model forecasts, storm reports, observations, and river-gauge data. Users can search by city, ZIP code, or address to view active alerts, outlooks, storm reports, and current conditions for a specific place, then share a link to that view.

The platform offers animated radar loops, interactive outlook categories, Skew-T soundings with derived parameters, and HRRR point forecasts. Atmostorm also provides a developer API with normalized GeoJSON and spatial queries for its supported weather data. The service is free to use and supported by user donations. It credits and links to its public data sources, and states that it is not affiliated with or endorsed by the National Weather Service. Atmostorm encourages users to verify severe-weather information with the NWS before taking action.