For a large regional disaster, your communications methods will be limited, and I believe that you've covered them all.

I think your best asset will be HF, because you can reach long distances outside of the affected area. Really, for huge disasters/catastrophes, HF is the only way to go.

For emergencies, you want to get your message to the highest operating level of government so they can pass it down. Hopefully, it doesn't get lost.

Keep local 10 digit numbers handy in a reference. Include every level of government. ( don't forget the U.S. country code for those you might reach outside of the U.S.)

I would also keep handy phone numbers for Federal Government agencies that normally coordinate with Law Enforcement, including:

[list]
[*]U.S. Air Force Rescue Coordination Center
[*]USNORTHCOM
[*]DHS
[*]Local 911 Centers (out of area, perhaps for you some place like Los Angeles!)
[*]State Division of Emergency Management
[*]Disaster Information Lines
[*]etc., you get the idea.

They may be annoyed you're calling, but they should be able to point you in the right direction.