I normally don't use the weatherbug but the new version specific to the storm is pretty slick. I first installed the one from blackberry.weatherbug.com/download . I was able to download and install fine. But the menu option wouldn't appear to move it from the downloads folder to the home screen. So I searched and found that this new "pretty" version for the Storm.
One recommendation on Weatherbug: Set a blank .mp3 or .wav as the notification sound. It seems that no matter what you have the profile set to (silent, vibrate, etc) Weatherbug will play the notification sound, at max volume, for every weather alert. It took me 20 minutes at 2AM to figure out that the loud beep coming from my BlackBerry every 5 minutes was Weatherbug letting me know it was foggy... over and over again.