23:22 UTC .RED ALERT.
Strong geomagnetic substorm in progress.
Northern Lights should be visible in the City of Stockholm (weather permitting?), in some cases to the naked eye.
When it does so it will be low on the horizon, approximately 0° to 15° (ich) from the horizon.
This alert applies to the entire country of Sweden.
CET/Sthlm: Mon Dec 21 23:22:41 +0000 2020