Observatory Logo

From: TerryMosel@aol.com
Date: Tue, 16 Jul 2002 18:24:31 EDT
Subject: Aurora & NLCs

Hi all,

A remarkable sunspot is crossing the face of the Sun. The large active region 
stretches 15 Earth-diameters from end-to-end and poses a threat for powerful 
flares.  Indeed, on July 15th, twisted magnetic fields above the spot 
erupted.  The explosion sparked an X-class solar flare and hurled a coronal 
mass ejection into space.  As a result, sky watchers on Earth might spot 
auroras on Tuesday or Wednesday night. 

John McConnell in Maghaberry, Co Antrim, reports the first sighting of 
Noctilucent Clouds (NLCs) that I have seen this year: It was a few evenings 
ago, through breaks in the cloud (have there been some, do I hear you ask?), 
so he didn't get a great view, but there was no doubt of the sighting. So look 
out for these, low in the Northern sky near local midnight, as well as for 
aurorae. IAA members can read his article in the latest STARDUST for more 
details on this summer penomenon.

Last Revised: 2002 July 17th
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