Re: Aurora Borealis - The Northern Lights
Post 7
Bjorn is right. The weather in Iceland tends to be a a bit better than in the areas of Scandinavia in the Auroral zone. The only areas that have clearer skies are portions of Eastern Siberia and Alaska (see map below)
Where:
Clear skies are a requirement, so you should try to choose a location that is blessed with the clearest skies. At the continental locations in Russia, Alaska and western Canada, which have the clearest skies under the auroral zone, will also be at their clearest around the spring equinox. So the dark of the moon in March is the best time of year to travel to the auroral zone since the yearly variation of auroral activity also peaks around the equinox
When you travel should depend on the best chance for clear skies and little or no moonlight. For most destinations, that means December through April, for two weeks around the dark of the moon. The best for weather, darkness, and daytime activities is February/March/April.
The best time of year is in the spring when the probability for clear skies is twice as good as in the fall. Two weeks around new moon in March is best, viewing is good from early January to late April, however.
If you must travel in the fall, the last two weeks of August and the first three weeks of September are best for weather, but the aurora is there behind the clouds (60 percent probability) during the entire winter.
Where you stay is not as important as arranging for transportation outside town to avoid city lights, and to acquire a clear view of the northern horizon. Dress warmly, plan to watch the sky between 10 p.m. and 2 a.m. local time, although an active period can occur anytime during the dark hours. Active periods are about 30 minutes long, occurring every 2 hours, if the activity is high. The aurora is a sporadic phenomenon, occurring randomly for short periods or perhaps not at all. If you can monitor the "short term forecast," it will reliably tell you what is expected in the next hour.
http://www.alaska.edu/AuroraForecast/.