Return-Path: Received: (qmail 3491 invoked from network); 19 Oct 2001 10:24:00 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 19 Oct 2001 10:24:00 -0000 Received: (qmail 11044 invoked from network); 19 Oct 2001 10:23:44 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 19 Oct 2001 10:23:44 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 15uWhy-0000Br-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 19 Oct 2001 11:16:54 +0100 Received: from rhenium.btinternet.com ([194.73.73.93] helo=rhenium) by post.thorcom.com with esmtp (Exim 3.33 #2) id 15uWht-0000Bm-00 for rsgb_lf_group@blacksheep.org; Fri, 19 Oct 2001 11:16:50 +0100 Received: from [213.1.104.92] (helo=default) by rhenium with smtp (Exim 3.22 #6) id 15uWhD-0001oQ-00 for rsgb_lf_group@blacksheep.org; Fri, 19 Oct 2001 11:16:08 +0100 Message-ID: <002001c15886$5d28c720$07f07ad5@default> From: "Alan Melia" To: "LF-Group" Subject: LF: Propagation conditions Date: Fri, 19 Oct 2001 10:38:40 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi all, The item below was just received from the spaceweather site..... ----------------------------- Space Weather News for October 19, 2001 http://www.spaceweather.com Twisted magnetic fields above sunspot 9661 erupted this morning, unleashing an X-class solar flare and hurling a coronal mass ejection toward Earth. The expanding cloud will likely strike our planet's magnetosphere on October 21st during the peak of the Orionid meteor shower. Sky watchers, especially those living at higher latitudes, could spot both meteors and auroras this weekend. Stay tuned to SpaceWeather.com for details and updates. ------------------------------------ The flare which was an X1.6 Class occurred at about 0100z so would not provide any enhancement in Europe. There was an 'after flare' at about 0600z with a level of about M1.1 which would be enough to 'fill-in' the morning dip. There is significant rise in the proton flux and this could lead to slightly enhanced conditions during daylight today. The CME is scheduled to arrive around the 21st (look for a rise in Kp to 6 or 7, depending on the orientation of the plasma field) The resultant ions should start to affect LF at mid-latitudes by about 24 or 25th and last for 2 or three days. This should lead to improved daytime conditions, but probably to higher absorption and depressed levels at night. We might look for improved DX conditions at night by around the end of the month as the effect decays away, leaving a some slow multipath fading to boost signals at times. Happy DX hunting Cheers de Alan G3NYK alan.melia@btinternet.com