21Alive First Alert Weather is a free iPhone application developed by Gray Television Group Inc. It falls under the Lifestyle category with a specific focus on weather updates.

The app provides access to station content specifically designed for mobile users. It offers a range of features to keep users informed about the weather conditions in their area. These include a 250 meter radar with the highest resolution available, high-resolution satellite cloud imagery, and future radar to track the path of severe weather.

With the app, users can stay up to date with current weather conditions, as it is updated multiple times per hour. It also allows users to add and save their favorite locations for easy access to weather information. The app provides daily and hourly forecasts, which are updated hourly from the computer models.

A notable feature of 21Alive First Alert Weather is its fully integrated GPS, which provides current location awareness. Users can also opt-in for push alerts to receive notifications about severe weather, keeping them safe and informed. Additionally, the app provides severe weather alerts from the National Weather Service.

Overall, 21Alive First Alert Weather is a comprehensive and user-friendly app that provides accurate and timely weather information to iPhone users.