Basically, yes.
There are many religious conservatives who believe that everything is a result of our morality - that poor people are poor not because they were born into a place with low employment or got sick without insurance or have a sick relative they need to care for rather than seek remunerative work, etc. - or at least, that if they did get sick, this was because they were bad people and did something to deserve sickness.
So in this view, yes, severe flooding in North Carolina would be a signal from God that Trump is a bad president. If the flooding is worse in Virginia, it would be a signal from God that Clinton would have been worse.
