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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Dec 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 Dec 2018	069	014
30 Dec 2018	069	010
31 Dec 2018	069	004

Bulletin

Solar activity was at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CMEs) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Earth remained under the influence of the High Speed Stream (HSS) associated with the positive polarity coronal hole (CH). Solar wind speed varied mostly between 550 and 610 km/s, showing a slight decline towards 500 km/s by the end of the period (DSCOVR). Bz varied between -7 and +8 nT before midnight, and between -4 and +2 nT afterwards. The interplanetary magnetic field was directed away from the Sun (positive sector). Geomagnetic activity ranged from quiet to active conditions.

Quiet to unsettled geomagnetic conditions are expected, with a waning chance on another active episode during the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 11 Stationen.

Solarindizes für den 28 Dec 2018

Wolf-Zahl Catania	000
10cm Solarflux	069
AK Chambon La Forêt	026
AK Wingst	027
Geschätzer Ap-Wert	028
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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