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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Nov 29 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Active conditions expected (A>=20 or K=4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
29 Nov 2017	072	010
30 Nov 2017	071	006
01 Dec 2017	070	005

Bulletin

Solar activity was at very low levels. Decaying sunspot region NOAA 2689 was quiet. The leading part of the prominent 40 degrees long filament has started to round the SW limb. 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, with a slight chance on an isolated C-class flare.

Solar wind speed undulated between 400 and 430 km/s, with Bz oscillating between -6 nT and +7 nT. The interplanetary magnetic field was mostly directed towards the Sun.

The geomagnetic field was quiet throughout the period. Mostly quiet to unsettled conditions are expected, with a possibility on an active episode if the glancing blow from the 25 November CME arrives or the wind stream of the negative polar coronal hole (CH) extension intensifies.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 013, basierend auf 10 Stationen.

Solarindizes für den 28 Nov 2017

Wolf-Zahl Catania	016
10cm Solarflux	072
AK Chambon La Forêt	009
AK Wingst	007
Geschätzer Ap-Wert	007
Geschätzte internationale Sonnenfleckenzahl	016 - Basierend auf 27 Stationen

Zusammenfassung auffälliger Ereignisse

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

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