[toomuchtodo]

Have you looked at XM weather? I believe it'll show lightening strikes. It has a subscription, but is of course broadcast only via the XM satellite.

http://www.xmwxweather.com/marine/

[Gys]

Never knew of XM weather. But the reception is only in US & Canada so I guess only interesting for coastal areas ? Nevertheless, I wonder where they get their lightning data. Which is US-only according to the website.