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Originally Posted by Stewy  They don't think it Henrya, they know it 
Yup it's a 22 degree Halo, It's very faint at the minute and can only see a little bit of it, do they last long?
Thanks Henrya
Stew |
How long it last depends on the ice crystals - they may move horizontally in wind, or up or down depending on convection currents. Some haloes can last a couple of hours, I think. Must look this up. Some are very fleeting - a few seconds.
henrya