John Collins
En-Route
A CME is a Coronal Mass Ejection from the sun. It can play havoc with vertical guidance on a WAAS approach. There is a distinct chance that you will experience a downgrade on a LPV during the solar storm, particularly in the northern part of the US and Canada. I have added the website http://spaceweather.com/ to my preflight planning. From their website:
The odds of a geomagnetic storm on Dec. 28th are improving with the launch of two CMEs toward Earth in less than 24 hours. NASA's STEREO-B spacecraft photographed this one on Dec. 26th:
The odds of a geomagnetic storm on Dec. 28th are improving with the launch of two CMEs toward Earth in less than 24 hours. NASA's STEREO-B spacecraft photographed this one on Dec. 26th:
According to a forecast track prepared by analysts at the Goddard Space Weather Lab, the cloud should squarely strike Earth's magnetic field on Dec. 28th at 20:22 UT (+/- 7 hours). Another CME could deliver a glancing blow a few hours earlier on the same date. The double impact is expected to spark mild-to-moderate geomagnetic storms at high latitudes.