Fix an issue with the radar map loading.

Weather Radar is an open-source application featuring doppler radar images from the United States National Weather Service and an air quality map from AirNow. There are two radar options: an "enhanced" radar with pan and zoom capabilities and single images based on location. The single images can be faster to load when connection speeds are suboptimal. You can save your favorite views for easy reference. National Weather Service radar imagery is available for the United States and its territories. License GNU General Public License v3.0