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24 October 2014
Circumzenithal Arc over Maryland
The halo near the sun is at 22 degrees, and the bright spot to the left is a sundog (or more technically a Parahelia). Now, Look at the top of the pic, and you see something rather more rare: a CIRCUMZENITHAL ARC. I took the picture (with my newly arrived iPhone 6) just before 5 PM EDT (21 GMT) this Friday evening here in Salisbury,Maryland. The image below from Les …
15 May 2013
Circumscribed Halo over Ocean City In Maryland On Tuesday
Correction: Hat tip to Daniel Linek who spotted my mistake. This is a CIRCUMSCRIBED Halo. Not a Circumzenithal Arc . See here: http://www.atoptics.co.uk/halo/circum.htm The title to this post has also been corrected. You can read more about this on the great Atmospheric Optics site: http://www.atoptics.co.uk/halo/cza.htm I saw one in Greenland (and at the South Pole for a few seconds). The bottom band I believe is a circumhorizon arc.
Dan Satterfield has worked as an on air meteorologist for 32 years in Oklahoma, Florida and Alabama. Forecasting weather is Dan's job, but all of Earth Science is his passion. This journal is where Dan writes about things he has too little time for on air. Dan blogs about peer-reviewed Earth science for Junior High level audiences and up.