I am F3
I20 is only for visa and oversea travel.
ask them what you can do right now, iu should assist you at this point if they decide to send you the packet
1.i don think the storm is strong enought to delay oversea mailling system. i just back from indy, the high way was still in good condition.
2.ask them the reason for delay.
3.yeah, try to contact your depatment.