WEAK IMPACT: As predicted, a
CME hit Earth's magnetic field on Aug. 27th (0100 UT). The impact was weak, lifting the solar wind speed by less than 50 km/s. Nevertheless, the
CME's arrival did power a magnetic substorm over Canada with some brief but beautiful auroras. A stronger
CME may be on the way, propelled by the "solar tsunami" explosion described below. Aurora alerts: SMS Text.
SOLAR TSUNAMI AND
CME: Sunspot AR2859 erupted on Aug. 26th, producing a C3-class solar flare: movie. The flare, however, was not the main attraction. The eruption also caused a massive "solar tsunami." Watch the shadowy wave ripple across the sun in this false-color ultraviolet movie from NASA's Solar Dynamics Observatory:
https://spaceweather.com/
Regards
Graeme
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Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/