Can a Notary Notarize a Document in Another State?
Since the notary is a state officer, a notary's duties may vary widely from state to state and in most cases bars a notary from acting outside his or her home state unless they also have a commission there as well.
The purpose of notarizing a signature is to provide verification that the person that signed it was in fact the person they said they were. Therefore, a person cannot notarize one's own signature. It violates the rules and would be deemed inappropriate and would probably invalidate the signature.
The most basic requirement for performing a notarization is that the person who is taking an oath or making an acknowledgment (the one whose signature is being notarized) must be present at the time of the notarization. The presence requirement refers to physical presence.