Thursday August 18 2022
The latest geomagnetic storm that promoted NOAA to issue a Watch for a G3 storm passed overnight. The forecast planetary index was for Kp to reach 7, but it looks like we peaked at 6. This means the viewing was limited mostly to northern latitudes in Canada.
Planetary K-Index Estimated Measurement
So in honor of that number, I have gathered 6 photos that have been shared in an aurora chasing group I belong to. These are in no particular order.
Photos: Mostly in and around Albert, Canada
North of Edmunton
Cora- Corpuz Delaza
The Geophysical Institute in the University of Alaska has 27 day forecast product. I do not know the accuracy of this product, but wanted to share it anyway for posterity.
They predict a minor event on August 27, then the next strong storm between September 3 and 5. We shall see (or maybe not and just get photos from far away again).
Geomagnetic storm watches are in effect for 17-19 August, 2022 due to likely CH HSS and CME influences. A recurrent coronal hole (CH) high speed stream (HSS) is anticipated to connect with Earth first, on 17 Aug. The resultant elevated and disturbed solar wind field is thought to be enough for potential G1 (Minor) geomagnetic storm conditions on 17 Aug.
Geomagnetic responses are likely to escalate to G3 (Strong) conditions on 18 Aug due to the arrival at or near Earth of multiple coronal mass ejections (CMEs) that have departed the Sun since 14 Aug. Despite the numerous CMEs, most are expected to have little to no impact at Earth, however, at least four have potential Earth-directed components.
The most recent flare-associated CME took place from small, but complex, Region 3078 at 3:58 am EDT (0758 UTC) on 16 Aug; while the first CME in this chain of activity took place on 14 Aug.
Forecast confidence is low to moderate regarding Earth impact of these CMEs, as most of the ejecta is expected to pass either ahead or south of Earth’s orbit. However, model runs indicate combined arrival of some of these CMEs at or in the vicinity of Earth beginning 18 Aug – therefore, the G3 (Strong) storm watch is in effect for that day. Any CME influences are likely to continue on 19 Aug and a G2 (Moderate) storm watch is posted accordingly.
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