Not sure when you're leaving, but the systems that you may need to keep an eye on are Earl and Fiona. In the top of this thread, there is a storm update topic that Lisa started. If you click on that, you can link to the NCL site, which has a "Weather Alert" button on the home page. There, it will list, if any, itinerary changes.
2007 - Majesty of the Seas (Bahamas)
2009 - Enchantment of the Seas (Western Caribbean)
2010 - Freedom of the Seas (Western Caribbean)
2013 - Golden Princess (Alaska, roundtrip from Seattle)