Came across the free My Lightning Tracker App on the paddling site I post to today. Already had a notice this afternoon. I'm at home at the moment. Using it today. It seems excellent. Already had a notification of some lightning far away enough to allow time to get off the water depending on where you might be at the time. That storm is heading away but a larger system is moving my way. It may miss us. I like that you can add the radar image too.
Here is what it looks like. I believe the red dots are the most recent and the yellow ones are oldest. You get a real time notification.
lightning app.png