Wouldn't the red moon associated with "bad omen" be a form of astromancy? And if so, wouldn't that be a divination which is supposed to be prohibited (according to scripture)? Wouldn't this be a conflict of principle to look to these "signs" as something prophectic of an event to occur?
Since "jehovah" seems to have had quite a few "dark and terrible days" and has destroyed many civilizations over a long history.... could it be that "ominous signs" are another part of mind control....a trigger to cause fear?