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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Dec 01 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
01 Dec 2017	071	005
02 Dec 2017	070	005
03 Dec 2017	069	005

Bulletin

Solar activity was at very low levels. Sunspot region NOAA 2689 has become nearly spotless and will rotate over the NW limb later today. It produced a small B1 flare around 14UT (PROBA2/LYRA), and its group filament erupted between 01:30UT and 03:00UT. The 40 degrees long filament rounded the SW limb quietly. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Quiet flaring conditions are expected.

Earth remained under the influence of the wind stream from the southern polar coronal hole (CH) extension. Solar wind speed peaked briefly near 540 km/s around 02UT, and ended the period with values near 470 km/s. Bz oscillated mostly between +5 nT and -6 nT. The interplanetary magnetic field was mostly directed towards the Sun. The extension of a positive northern polar CH has started transiting the central meridian.

The geomagnetic field was quiet to unsettled throughout the period, and is expected to remain so. The high speed stream from the northern polar coronal hole (CH) extension is expected to affect the earth environment starting most likely 04 December. This may result in minor to moderate geomagnetic storming.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 08 Stationen.

Solarindizes für den 30 Nov 2017

Wolf-Zahl Catania	///
10cm Solarflux	072
AK Chambon La Forêt	015
AK Wingst	012
Geschätzer Ap-Wert	012
Geschätzte internationale Sonnenfleckenzahl	/// - Basierend auf /// Stationen

Zusammenfassung auffälliger Ereignisse

Zur Verfügung gestellt vom Solar Influences Data Analysis Center© - SIDC - Verarbeitet von SpaceWeatherLive

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