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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Dec 24 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
24 Dec 2018	070	003
25 Dec 2018	070	003
26 Dec 2018	070	003

Bulletin

Solar activity was at very low levels. The Sun was spotless. A small eruption with coronal dimming was observed on 24 December around 06:25UT in a region about 30 degrees beyond the east limb (Farside; STEREO-A/EUVI). The associated coronal mass ejection (CME) was not directed to Earth. No other coronal mass ejections were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A narrow extension of the positive polarity northern polar coronal hole (CH) has started its transit of the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed varied mostly between 300 and 350 km/s (DSCOVR). Bz ranged from -3 to +3 nT, ending the period at +5 nT. The interplanetary magnetic field was predominately directed towards the Sun (negative sector). Quiet geomagnetic conditions were observed.

Quiet geomagnetic conditions are expected to continue, with a small chance on an isolated unsettled interval.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 13 Stationen.

Solarindizes für den 23 Dec 2018

Wolf-Zahl Catania	///
10cm Solarflux	070
AK Chambon La Forêt	005
AK Wingst	002
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 11 Stationen

Zusammenfassung auffälliger Ereignisse

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

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