There's a significant lack of planning and simply brains in terms of anticipating the effects of weather on activities, too. Five extreme running events on Snowdon were given the chop, with the organisers saying "Due to extreme temperatures, it is no longer safe to continue with the event....Our top priority is the safety and wellbeing of all participants. Please bear with us as we focus on ensuring everyone returns safely."
Shame, really, that they hadn't checked with the Met Office prior to starting the thing.