These are 5 position alpha-numeric codes comprising the d series. All other level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association).
Alaska: Although Alaska enjoys a high volume of aurora activity, its cruises are not often mentioned as northern lights cruises. During the Alaska cruise season, it's rarely dark enough for the lights to be visible.
We asked our friends at Fodor's to put together their top 10 spots to see the Northern Lights. --Lola Akinmade. 1 Alaska: View Northern Lights in the U.S. Northern Lights and stars in Alaska Why Go: Alaska's location within the zone means you're almost guaranteed to see spectacular light displays. Be sure to move further away from city lights of Fairbanks into the region's vast wilderness areas of Denali and the Yukon Territory.