For starters, storms do not aloof appear after a warning. Acclimate stations adviser the atmosphere day in and day out. If a storm is possible, they will affair two types of warnings:
Storm watch
Surviving the Imperfect Storm: Tips for Emergency Preparations
If you alive in a storm-prone area, you should be acclimated by now on what to do, area to go and what to accept to be able for bad weather. However, if you're not acclimated to accepting pummeled by aerial apprehension and adamantine rain, you apparently don't accept an abstraction how best to face a storm situation.