As presented numerous times on my weblog, it is regional atmospheric circulations that matter in terms of the weather we experience. I have an excellent example of this provided by Glenn James Sr. Weather Specialist at the The Pacific Disaster Center in Hawaii.
With his permission, I have reproduced his e-mail and photos below.
A very cold pool of air moved over the eastern side of the Hawaiian Islands overnight Tuesday…into early Wednesday morning.
It brought snow to the tall summits on the Big Island <http://cfht.hawaii.edu/webcams/gemdome/gemdome.jpg>, both of which are a bit under 14,000 feet…which isn’t unusual during the winter months.
The interest that I want to share with you however…is about the snow that fell here on Maui overnight. The Haleakala Crater is near 10,000 feet, and rarely has any of this white stuff falling.
Here’s a picture of this unusual occurrence <http://lh4.ggpht.com/_DDQJHcAYzgA/TTcgguyig_I/AAAAAAAADwc/jqyqwqe5NMg/s640/P1010164.JPG>, shot early Wednesday morning.
Meanwhile, a deep 945 millibar storm low generated a large west-northwest swell recently, which is about to begin pounding Hawaii’s north and west facing shores. We have a touch of winter here in the islands…at least once in a while.
Aloha, Glenn James