Przeglądasz Archiwum z środa, 22 sierpnia 2018

Codzienne wiadomości na temat aktywności słonecznej i geomagnetycznej z SIDC

Odnotowany: 2018 Aug 22 1230 UTC

Prognoza SIDC

Rozbłyski słoneczne

Quiet conditions (<50% probability of C-class flares)

Geomagnetyzm

Minor storm expected (A>=30 or K=5)

Monitoring przepływu protonów

Quiet

	strumień 10cm	Ap
22 Aug 2018	068	017
23 Aug 2018	068	017
24 Aug 2018	068	038

Skrót wiadomości

Solar activity was very low with X-ray flux below B level throughout the period. The only region on disk (NOAA AR 2719) is in decay and X-ray flux is expected to remain below C level.

Reanalysis of the CME of August 20, which was reported yesterday, shows an additional CME front extending over the South. The angular width of the CME is thus much larger than initially analysed and although faint, it could be classified as partial halo CME. Together with the location of the associated filament eruption it is thus likely that a component is Earth- bound. With an uncertain speed of between 300 and 500 km/s an arrival is anticipated between noon of August 24 and noon of August 25. No additional new CME onsets were observed in coronagraphic data.

Solar proton flux is at background levels and expected to remain so.

Solar wind speed has decayed from just under 600 km/s to around 450 km/s currently, while total magnetic field was nominal between 2-5nT. It thus seems that the influence of the Southern negative polarity coronal hole is fading more rapidly than initially anticipated. Solar wind conditions may, however, become enhanced again with later today still a small possibility of a shock related to the August 19 CME and from noon august 24 onwards the possible arrival of the August 20 CME. Effects in terms of solar wind speed should be small but the magnetic field may see significant effects of the passing cloud.

Geomagnetic conditions were quiet to unsettled (both K Dourbes and NOAA Kp 1-3) and are initially expected to remain so. Should the August 20 CME carry significant Southward magnetic field, minor geomagnetic storms are possible from noon August 24 onwards.

Dzisiejsza szacunkowa międzynarodowa liczba plam na Słońcu (ISN): 000, na podstawie 15 stacji.

Indeksy solarne na 21 Aug 2018

Liczba Wolfa z Katanii	///
Fale radiowe 10,7 cm	068
AK Chambon La Forêt	012
AK Wingst	008
Szacunkowa Ap	008
Szacowana międzynarodowa liczba plam słonecznych	016 - Na podstawie stacji 29

Podsumowanie wydarzeń godnych uwagi

Dostarczone przez Centrum Analizy Danych Wpływów Słonecznych© - SIDC - Przetworzone przez SpaceWeatherLive

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