Abstract: A weather update system, method, and device for providing and receiving weather data. The mobile computing device includes a processor and a location data receiver capable of establishing a geospatial location of the mobile computing device based on received data signals. The mobile computing device is configured to receive updated weather data in response to a threshold condition having been, met, such as a threshold distance having been traveled by the mobile computing device or a threshold time having elapsed. The mobile computing device is also configured to receive weather alerts. The system includes a weather data server network configured to receive current and forecasted weather data for a plurality of locations and times, stored in a high-resolution grid structure and including current locations of a user devices or favorite locations for users.