Cleaning out the bomb shelter. Getting keys and stocking up on supplies and saving money for tickets and having an emergency plan are all good things to be doing regardless. So if you want a warning. You have enough of one. Now, the question really is do you want to do anything about it? I.e. Figure it's inevitable, and just start making preparation or even better protesting the fact that your government is close to an offensive strike...while we still do not have enough information. Do you want to be like Bush II and put our kids (troops) in Iraq, to find out there were no Weapons of Mass Destruction (WMDs) there. I sure don't.
French investigators confirm wing part is from Flight MH370 (AP)
from the article: Israel should notify its citizens before striking Iran