Found this over at the Inktank Forums. Simply enter your location (city, zip code, address) at the top and select your weapon of choice at the bottom – then Nuke it!
I’d do alright against most weapons targeting San Diego but the top two or three would get me. Of course, almost nobody survives the asteroid attack. maybe that’s why Xur and the Kodan armada used it against the Rylan Star League. Where’s Alex Rogan when you need him?