Weatherbug app (for Droid and iPad) has weather radar, but it's for "civilian" weather. Should be helpful when in a bay or near land. You can also animate the radar so you can see which way a line of thunderstorms is moving. For Droid (and presumably 3g iPads) it knows where you are and shows you as a little pinpoint on a map. It's also a very good, useful app for use at home.
Keep the expenses low and the good times high.
PA Freshwater / Chesapeake