X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 02 Aug 2008 18:50:25 -0400 Message-ID: X-Original-Return-Path: Received: from smtp134.iad.emailsrvr.com ([207.97.245.134] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTPS id 3052873 for lml@lancaironline.net; Sat, 02 Aug 2008 13:53:35 -0400 Received-SPF: pass receiver=logan.com; client-ip=207.97.245.134; envelope-from=lalcorn@natca.net Received: from relay3.r3.iad.emailsrvr.com (localhost [127.0.0.1]) by relay3.r3.iad.emailsrvr.com (SMTP Server) with ESMTP id 6C98744D003 for ; Sat, 2 Aug 2008 13:52:54 -0400 (EDT) Received: from natca.net (webmail12.webmail.iad.mlsrvr.com [192.168.1.33]) by relay3.r3.iad.emailsrvr.com (SMTP Server) with ESMTP id 6035144C964 for ; Sat, 2 Aug 2008 13:52:54 -0400 (EDT) Received: by webmail.emailsrvr.com (Authenticated sender: lalcorn@natca.net, from: lalcorn@natca.net) with HTTP; Sat, 2 Aug 2008 13:52:54 -0400 (EDT) X-Original-Date: Sat, 2 Aug 2008 13:52:54 -0400 (EDT) Subject: RE: Garmin 496 NEXRAD False Echoes From: lalcorn@natca.net X-Original-To: lml@lancaironline.net Reply-To: lalcorn@natca.net MIME-Version: 1.0 Content-Type: text/plain;charset=UTF-8 Content-Transfer-Encoding: quoted-printable Importance: Normal X-Priority: 3 (Normal) X-Type: plain X-Original-Message-ID: <55380.192.168.1.71.1217699574.webmail@192.168.1.71> X-Mailer: webmail6.7 If it was in the morning, what you are seeing is a temperature inversion. = The XM is still only as good as the NEXRAD sites it is coming from and NEXR= AD is 30 year old technology. In the morning a temperature inversion will = show as anything from small dots, to large areas of heavy precip, just depe= nding on where the inversion is in respect to the antenna. If you know whe= re the nexrad sites are, that will help you determine if it is and TI. Alw= ays cross check nexrad data with metars, and satellite data.=0ALuke Alcorn