Scottish Weather Network Forum
January 23, 2018, 08:13:05 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: The Scottish Weather Network now has 57 member stations!
 
   Home   Help Login Register  
Pages: [1]
  Print  
Author Topic: Huge Moon Halo  (Read 3418 times)
0 Members and 1 Guest are viewing this topic.
skyewright
Administrator
Cirrus
*****
Offline Offline

Posts: 378


WWW
« on: December 31, 2009, 06:12:38 PM »

One of my neighbours saw a huge halo round the moon last night. He's used to seeing ones of about 1 or 2 diameters but this one was at least 15 diameters in size.

He asked if I knew anything about why it might have been so big? I couldn't provide any better answer than that it was presumably ideal conditions. Does anyone here have more info?
Logged

Regards
David
Budgie
Administrator
Noctilucent
*****
Offline Offline

Posts: 806



WWW
« Reply #1 on: December 31, 2009, 06:53:56 PM »

Could be something to do with the ice crystals in the atmosphere due to the low temps at the moment??

Don't forget that tonight is a Blue Moon!!  Grin
Logged

munrobaggins
Global Moderator
Cirrus
*****
Offline Offline

Posts: 247



« Reply #2 on: December 31, 2009, 10:18:37 PM »

Just as budgie says...it's reflection off ice crystals and just like normal rainbows there can be an inner as well as outer bow (circle), in this case, round the moon.
Logged

Regards,

Baggins
skyewright
Administrator
Cirrus
*****
Offline Offline

Posts: 378


WWW
« Reply #3 on: January 01, 2010, 01:09:05 PM »

Just as budgie says...it's reflection off ice crystals and just like normal rainbows there can be an inner as well as outer bow (circle), in this case, round the moon.
Thanks both. I had a feeling that ice crystals came into it somewhere.
Logged

Regards
David
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!
count