In article , Steve Loft
writes
No-One wrote:

Does anyone know just how accurate the data on this page is? I'm in the East

It seems variable to me. It was spot-on on Wednesday, the thunderstorm
arrived here just when that page said it would. But a couple of weeks
ago, we were in the middle of a storm which the page was showing about
100 miles away. But it had got the direction from Blackpool correct, so
rather like your example here.

The one near Sandhurst seem more accurate.

http://homepage.ntlworld.com/zaax/lighting.htm
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Zaax