Best storm alarm settings (UK) ????

Hi 

I have come from the Suunto Ambit 3 Peak... Amazing watch just a shame about how suunto treated the Ambit users by stabbing them deep and hard in the back,,, I still have it and will continue to use it for certain activities... The storm alarm on the A3P was fantastic and was a good indicator of a possible storm etc in the UK.. I found it very useful... Yet the one on my Fenix5x is a bit lacking... Twice in since I have had the Fenix(10days now) the A3P's Storm alarm has go off and sure enough had some bad weather yet NO alarm went off on the Fenix... So I am curious as to what the best setup is for the UK from other users?? The A3P required NO setting up and infact you can only turn it on or off.. So I have no idea what it's settings are..  But may be users here will have a good idea what works best for them and I could give it a try..

regards

Crags