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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Dec 25 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
25 Dec 2017	076	007
26 Dec 2017	075	013
27 Dec 2017	074	010

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 although not very likely.

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

Solar wind speed is at 480 km/s with interplanetary magnetic field magnitude of 6 nT. The influence of the high speed stream from a coronal hole is fading. It produced only unsettled levels at planetary levels (Kp up to 3) and isolated active conditions locally at Dourbes (KDourbes up to 4). The coronal hole has irregular shape and is divided in two parts, the southern part (extension of the southern polar coronal hole) may still influence the Earth within 48 h. Quiet to active conditions can be expected.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 024, basierend auf 07 Stationen.

Solarindizes für den 24 Dec 2017

Wolf-Zahl Catania	///
10cm Solarflux	076
AK Chambon La Forêt	024
AK Wingst	015
Geschätzer Ap-Wert	014
Geschätzte internationale Sonnenfleckenzahl	026 - Basierend auf 13 Stationen

Zusammenfassung auffälliger Ereignisse

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

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