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Berlin
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Solar Synoptic Map
- Only small and simple sunspot groups on the visible solar disk; low flare risk
- A possibly complex region is rotating into view; SE limb ↙️
- A small coronal hole near the centre + some filament material might enhance geomagnetic activity in 2-5 days
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Coronal mass ejection, probably from a filament eruption near the central solar disk… Earth-directed components not ruled out…
Sun: Two filament disruptions today, the first may have been suppressed by the overlying streamer belt (closed field) above, whilst the second probably dissipated in the fast solar wind of the neighbouring coronal hole.
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Sun: Two filament disruptions today, the first may have been suppressed by the overlying streamer belt (closed field) above, whilst the second probably dissipated in the fast solar wind of the neighbouring coronal hole.
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A large filament erupted in the southwestern quadrant of the visible solar disk… CME ('solar storm') with earth-directed components not ruled out… Waiting for coronagraph imagery…
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A closer look at the eastern limb (arrival) and the western limb of the Sun (departure from the visible solar disc). The region in the NE has a complex magnetic field and could lead to increased flare activity over the next few days.
SDO AIA 304 Å (red) + AIA 171 Å (green)
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A lot of activity at the eastern limb of the Sun: Opening coronal loops and a large filament eruption with material falling back.
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Relatively quiet Sun with only 2 sunspot groups on the solar disk. 4561 shows rapid growth and produced some C-class flares and CMEs (will most likely miss Earth). 4562 is rather simple, no growth. Coronal hole 07+ could bring some fast wind and aurora to high lats in some days.
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A CME ('solar storm') that might graze earth 24 or 25 October (highly uncertain)
A stealthy solar storm launches between fast wind streams which helps aurora photographers this week. We say goodbye to Region 4551 and 4557, giving radio & GPS operators a short break from radio blackouts on Earth's dayside. Learn the details in the new #SpaceWeatherWoman forecast: patreon.com/SpaceWeatherWoma… (no paywall + graphics and blog)
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There is not much left of the negatively polarised coronal hole in the Sun’s northern hemisphere now that an ‘Anemone active region’ has taken up residence at its centre.
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Nice aurora display in northern scandinavia after the arrival of a coronal hole stream interaction region
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Three sunspot groups, some magnetic flux is emerging; still a chance of isolated M-class flares…
Solar Synoptic Map
- 3 active regions on the visible solar disk: 4560 simple bipolar; 4557 slowly growing, quite stable; 4551 confined M1.68 solar flare ≈0900 UTC, no CME ('solar storm')
- coronal hole CH04+: elevated chances of aurora from 19 Oct, SWPC: G1 watch 19/20 Oct
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Solar Synoptic Map
- 3 active regions on the visible solar disk: 4560 simple bipolar; 4557 slowly growing, quite stable; 4551 confined M1.68 solar flare ≈0900 UTC, no CME ('solar storm')
- coronal hole CH04+: elevated chances of aurora from 19 Oct, SWPC: G1 watch 19/20 Oct
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A filament (or prominence) eruption occurred early on 17 October 2026 UTC day at/behind the southeastern limb of the Sun. Quite a large CME ('solar storm', not heading towards Earth) was produced.
(SDO AIA 304, AIA 171, AIA 193 Running Difference)
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