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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Dec 03 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Moderate (ISES: Major) magstorm expected (A>=50 or K=6)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
03 Dec 2017	071	004
04 Dec 2017	070	054
05 Dec 2017	070	045

Bulletin

Solar activity was at very low levels. The Sun is spotless. 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.

ACE data indicated solar wind speed decreased further from initial values near 400 km/s to about 350 km/s by the end of the period. Bz varied between +3 nT and -4 nT. The interplanetary magnetic field was mostly directed towards the Sun. The extension of a positive northern polar CH is transiting the central meridian.

The geomagnetic field was quiet to unsettled levels throughout the period, and is expected to remain so until the arrival of the high speed stream from the northern polar coronal hole (CH) extension and its associated preceding co-rotating interaction region. Based on observations from the previous solar rotation and from STEREO-A, their influence may start affecting the earth environment late on 03 December or on 04 December, with minor to moderate geomagnetic storming possible.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 09 Stationen.

Solarindizes für den 02 Dec 2017

Wolf-Zahl Catania	///
10cm Solarflux	072
AK Chambon La Forêt	006
AK Wingst	003
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 13 Stationen

Zusammenfassung auffälliger Ereignisse

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

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