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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Dec 23 1321 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
23 Dec 2017	077	008
24 Dec 2017	077	014
25 Dec 2017	077	007

Bulletin

Solar activity was low, no C-class flares in past 24 h. There is only one region visible on disk (Catania group 67, NOAA active region 2692) with beta magnetic field configuration. C-class flaring is possible.

Proton flux levels are at background values and are expected to remain so. No Earth-directed seems were observed.

Solar wind speed is at 380 km/s with interplanetary magnetic field magnitude of 7 nT. A sector boundary crossing was seen around 22:00 UT on 22 December, with polarity changing from positive to negative. The arrival of a high speed stream from a negative coronal hole is expected within 24 h. Geomagnetic conditions have been quiet, active periods and possibly minor storms are possible under the influence of the high speed stream.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 027, basierend auf 08 Stationen.

Solarindizes für den 22 Dec 2017

Wolf-Zahl Catania	027
10cm Solarflux	075
AK Chambon La Forêt	007
AK Wingst	001
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	024 - Basierend auf 11 Stationen

Zusammenfassung auffälliger Ereignisse

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

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