Minor Geomagnetic Storm Watch.
A CME is approaching Earth for a close encounter on Sept. 17th. It will either miss or deliver a glancing blow. Both outcomes are equally possible given uncertainties in the CME’s trajectory. A hit could spark minor G1-class geomagnetic storms and high-latitude auroras.
https://spaceweather.com/
Mike Terry to WOR iog (2021-09-16)