• Home
    Home This is where you can find all the blog posts throughout the site.
  • Categories
    Categories Displays a list of categories from this blog.
  • Tags
    Tags Displays a list of tags that have been used in the blog.
  • Bloggers
    Bloggers Search for your favorite blogger from this site.
  • Team Blogs
    Team Blogs Find your favorite team blogs here.
  • Login
    Login Login form

The Sky

For all other sky related issues

Posted by on in The Sky

Continuing our theme of interesting things in the sky it would seem that these crisp autumn days are just perfect for observing shimmers of colour on the clouds in the sky. It is also nice to be able to share these with friends and family who have never seen them before.

While taking a well-earned tea break this weekend my parents and I spotted a rather nice pair of sundogs. We admired them for a few moments when I suggested that the cloud conditions looked to be just right for a circumzenithal arc. We all turned our gaze upwards and right on cue… a faint curve like an upside- down rainbow grinned down at us. As CZAs are formed from the same ice crystals that sundogs are made from it is always worth taking a glance upwards to see if there is one smiling down.

The following day we saw a rather nice iridescent cloud, which we managed to photograph for the first time. In addition to the cloud being fairly thin, the water droplets in the cloud have to be the same size in order for the diffraction effect to be seen. We have observed iridescence several times from WV, although it is apparently uncommon.   It is amazing what you see if you just take the time to look up once in a while.

Last modified on
Hits: 1898
0

Posted by on in The Sky

 

 

 

 

 

It seems to be our week for spotting interesting things in the sky.  First the aurora, then the solar halo and now this weird structure.  It looks like something you would expect to see in  ‘Close Encounters’ or the ‘X files’.

This cloud formation is a rather impressive fallstreak hole (also known as hole punch cloud or cloud hole).  These are apparently fairly rare and can often be mistaken for UFOs.  The exact process of their formation is not fully understood but is believed to be caused when water droplets in the cloud start to freeze into ice crystals, sticking together and becoming heavier before finally dropping below the cloud as ‘fallstreak’.  This process is started when aircraft pass through the cloud, which causes the water to cool down enough to freeze.  The result is quite impressive.

Tagged in: Clouds The Sky Weather
Last modified on
Hits: 2220
0

Posted by on in The Sky

 

 

 

 

 

 

 

 

 

Just when we thought things couldn’t get any better this week, Nettie managed to spot, what at first sight looked like a fairly regular solar halo. Although such things are surprisingly common (if you spend any amount of time sky watching), it soon turned out to be what is possibly a once in a lifetime experience.

What we ended up observing was a combination of optical phenomena, which for our location have a probability of being seen individually, ranging from about once a year to one hundred times a year.

Put them all together however and well, probability was never my strongpoint, but I think maybe tonight is a good night to get that lottery ticket.

Last modified on
Hits: 2003
0