Return-Path: Received: (qmail 187 invoked from network); 19 Mar 2002 10:57:36 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 19 Mar 2002 10:57:36 -0000 Received: (qmail 963 invoked from network); 19 Mar 2002 10:57:31 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 19 Mar 2002 10:57:31 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16nIj3-0001EW-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 19 Mar 2002 12:28:25 +0000 Received: from protactinium.btinternet.com ([194.73.73.176]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16nIj2-0001ER-00 for rsgb_lf_group@blacksheep.org; Tue, 19 Mar 2002 12:28:24 +0000 Received: from host213-122-215-129.in-addr.btopenworld.com ([213.122.215.129] helo=default) by protactinium.btinternet.com with smtp (Exim 3.22 #8) id 16nHC8-0004Gy-00 for rsgb_lf_group@blacksheep.org; Tue, 19 Mar 2002 10:50:21 +0000 Message-ID: <000101c1cf33$d9c172e0$81d77ad5@default> From: "Alan Melia" To: "LF-Group" Subject: LF: Propagation Date: Tue, 19 Mar 2002 10:48:34 -0000 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, NOAA SEC forecasts the slight possibility of a major X-ray flare with the next three days. The recent bout of M-Class flares produced a CME which arrived around midnight last night, driving the Kp index up to 5. I expect this to start to affect LF radio conditions by about Friday, leading to a deterioration of long nightime paths, but a substantial enhancement of daytime paths again. (Just in time for the weekend !!) More detail on my web site http://www.alan.melia.btinternet.co.uk or via the Propagtion "pop-up" on Dave's site http://www.wireless.org.uk There was a good program on UK Channel 5 the other night explaining the solar events called "Killer Sun" with some spectacular SOHO graphics of flares, prominances, and CMEs. (No comment much about LF though except the sweeping statement that these events "disrupt radio communications" !!) Cheers de Alan G3NYK