Geomagnetic Storm Watches for 11-13 November

Coronal Mass Ejections (CME) are anticipated to impact Earth later on 11 November on into 13 November. Therefore, geomagnetic storm Watches have been posted as: G2-Moderate for 11 Nov; G3-Strong for 12 Nov; and G1-Minor for 13 Nov. Analyses of these events continues due to the large range of potential outcomes from these events and how they may interact upon arrival at Earth, therefore, there is a moderate level of uncertainty regarding the forecast. However, there is a fair amount of consensus regarding timing for the most recent, 10 Nov CME. Current forecast reasoning is that the CME from 9 Nov is moving at a much slower speed than the CME from 10 Nov. While, there is uncertainty as to whether the second, faster CME will catch up to the first before any Earth component arrival, there would likely not be too much time in between CME arrivals. Once SWPC forecasters have made a decision on the final, most likely outcome, the forecast will be updated accordingly and the best solution WSA-Enlil model run will be posted. So, stay space weather aware by continuing to visit the Nation's official source for space weather information at spaceweather.gov