Hiya Fish40,
If i remember right, There has to be rain also in the real bad weather to trigger it, If no rain then you just hear the thunder
Not got time to re-read back posts but someone may confirm/unconfirm this
Have Fun
Ciao
Def
Hi ho hi ho it's off to da pacific i go, With a mk14 here and a mk14 there hi ho hi ho hi ho hi ho lol