In fairness if you look at the arrival boards at Dublin airport there are all sorts of delays due to the weather. The diversions at Knock are not great but happens from time to time. Look at this live feed and see the havoc the snow has caused
BBC - Travel News - Air (UK airports) : Current Disruptions
As it is live maybe by the time you check the link everything will be back to normal but flights are suspended at East Midlands. Delays Lutin, heathrow and Birmingham all due to adverse weather conditions.
Worse still you could have diversions for something like this although rarely happens in the West unless a field is at stake!
Armed shopping centre robbery causes flight diversions at Dublin airport | Irish Examiner