Monday, 17 August 2009

Beam of darkness

It looked as though someone was using a searchlight on our eastern horizon except the beam was dark rather than light. I've written about anticrepuscular rays previously although when you see them from the mountain they're usually spread across the sky and converge to the antisolar point. Sometimes they look a little different though. We've had a stubborn cloud just off the summit to the west that blocks the view of the setting sun, but it also affects the shadow of the mountain in the east. I think this cloud is also responsible for this ray of darkness in the sky. Meanwhile the earth's shadow, that dark band on the horizon, was as well-defined as I've ever seen.

For added strangeness, it snowed at the summit today. It was only a flurry and the snow has melted already, but snow in the middle of August? This has certainly been an unusual year for weather on Mauna Kea.

3 comments:

Protege said...

To me it looks like a mini-tornado on the horizon.;))

Diane said...

Beautiful pic! I'm glad to see you're back (I've been gone for a while, too, or I would have said so sooner :)

Tom said...

Protege - that's one strange looking tornado!

Diane - great to see you back in business. I enjoyed the decorating post you made - I'm planning to do some decorating myself later this year and unfortunately my house is big! I'm not looking forward to it...

Tom