This simple, yet powerful weather app is powered by nothing more than XML and Object-Oriented PHP. Simply input a zip code or a pair of latitude/longitude coordinates that is located anywhere in the United States or its coastal or offshore waters, including Puerto Rico and the Virgin Islands, and the app will display the forecast for you.
There are 7 different types of forecasts available: a general forecast, fire weather, severe weather, tropical weather, winter weather, marine weather, and a long-term outlook up to 3 months. Scroll down to find a detailed forecast in 3-hour increments out to 4 days.
Each forecast will display relevant watches, warnings, and advisories. For example, Tornado and Severe Thunderstorm Warnings are displayed on the Severe Weather page, while Blizzard and Winter Storm Warnings are displayed on the Winter Weather page. Simply click on the warning to read its full text from the National Weather Service. The app is tablet and mobile-friendly so you can take it with you on the go.