Since the danger seems to be receding -- I hope NWS & related agencies can use this as a good drill to fix their web properties.
Tsunami.gov couldn't handle the load, and many other official links (like mobile.weather.gov) just dump you into a government shutdown notice. Cell.weather.gov isn't even resolving.
I'm sure someone thought the critical products would still be easily available even with a government shutdown, it sure didn't work out that way.