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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