April 20, 2020

Aurora Last Night

Some lucky folks in our region viewed an impressive aurora last night and perhaps a hint of it might be visible tomorrow morning.

Here is a picture provided  by Greg Johnson of Skunk Bay Weather of the aurora at 3:39 AM, looking northward from Kitsap towards Whidbey Island:


Greg also provided a magnificent video of Monday mornings event:


This aurora was associated with a coronal mass ejection (CME) event several days ago, which resulted in a relatively high planetary K index (about five) last night (see plot below).


The simulated distribution of the aurora provided by the NOAA Space Weather Prediction Center, shows the core of the event over southern/central Canada.



What about tonight?

It will certainly be clear enough, but as shown in the figure above, the K-index has dropped considerably.  The latest Space Center forecast is for a decline  of Kp to 3 tonight...which might not lead to a decent aurora show.  Might check their webpage tonight for an update. 


Viewing a good aurora is a life-changing experience.





3 comments:

  1. I was in Everett and saw the aurora.. that was almost 40 years ago, and I haven't seen it since!

    Life changing, like standing under the total solar eclipse in Oregon a few years ago. An extraordinary, unforgettable experience.

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  2. I was out tent camping in my back yard last night, but unfortunately there's a bunch of tall trees to the north, so I didn't see anything. However, I did notice that the stars were gorgeous and very bright last night. The Milky Way was amazing.

    ReplyDelete
  3. Sigh...thank you for posting the mesmerizing video...a wonderful change of pace.

    ReplyDelete

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