NOAA Radar and Satellite|天氣線上App不用買-HotApp4Game

eRadar HD is a great application for iPhone, iPad and iPod touch that displays animated high-resolution weather radar and satellite cloud images around your current location, allowing you to quickly see what weather is coming your way.

You will get real time detailed, stunning and sharp images on top of zoomable maps for not only rain and snow, but also tornados and hail. Here are some example images from the weekend and as recent as few hours ago dealing with Hurricane Sandy. The data is provided by NOAA's National Weather Service.

Satellite images provide an excellent view on the clouds in the sky and an indication of the weather over the North American continent, Europe, Japan, Australia and Indonesia.

The app also allows you to check the weather on your favorite places on maps. Interactive map includes live international weather conditions, local weather and time, ten-day forecasts and sunrise/sunset times for multiple places. You can add placemarks on the map to represent your favorite places or the places you’d like to visit. At a glance you can see the time and weather for all of your favorites.

Radar map shows areas of current precipitation. A weather radar is used to locate precipitation, calculate its motion, estimate its type (rain, snow, hail, etc.), and forecast its future position and intensity. Precipitation type is indicated by the color. Green color indicates lesser precipitation while the yellow color code indicates intense precipitations. The color code red is indicative of the most intense precipitations. Blue color indicates snow.

Satellite images come from satellites which remain above a fixed point on the Earth (i.e. they are “geostationary”). Lighter areas of cloud show where the cloud tops are cooler and therefore where weather features like fronts and shower clouds are.