NLC ALERT 3rd July

Class.
Must keep an eye out for unusual coloured sunsets due to the volcano.

Those 'waves' remind me of 'asmospheric gravity waves'
(not to be confused with 'gravitational waves'.)
or to give them the correct term 'undular bore'
en.wikipedia.org/wiki/Undular_bore
I've seen some videos of these on the net and sometimes the way they
move reminds me of NLC's.
We had a NLC talk by Dave L at our last meeting and some of the
timelapse vids he showed really looked similar in ways.

Anyway...
if you've never seen one they look like this,
- From space :
cimss.ssec.wisc.edu/goes/blog/archives/625

from the ground:




Not that I'm into clouds now or anything - but I think it's curious.

michaeloconnell wrote:

Here with John Flannery at the mo in Monasterevin. We reckon it's too early at this time to see NLCs. However, what is visible are wave-like cloud bands in the upper atmosphere caused by the volcano in Russia. Well worth a look. See spaceweather.com for more info.

Very cool!