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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2016 Dec 23 1252 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 2016	075	024
24 Dec 2016	076	016
25 Dec 2016	075	007

Bulletin

Solar activity was very quiet in the past 24 hours. No flares were observed. The only numbered NOAA active region (AR) 2620 is rotating across the west solar limb. A slow moving CME observed at the east limb starting at 21:34 UT (21-Dec-2016) as detected by CACTUS is not expected to be geoeffective. Solar protons have remained at background levels over the past 24 hours. There are no significant Active Regions (AR) on the Sun, therefore solar activity is expected to remain low over the next 24 hours with a small chance of B-class flares. The solar wind speed has decreased from 720 km/s to 620 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 4 nT and 7 nT. The Bz component has fluctuated between -5 nT and +5 nT. Geomagnetic conditions ranged between Kp index 3-4 (NOAA) and local K index 2-4 (Dourbes) over the past 24 hours, with the enhanced values occurring due to fluctuating Bz and high speed solar wind generated from a large positive polarity coronal hole (CH). Enhanced solar wind conditions are expected to persist over the next couple of days due to the CH High Speed Stream (HSS). As a consequence Geomagnetic conditions are expected to be unsettled to active for the next couple of days, with a possibility of minor storms.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 14 Stationen.

Solarindizes für den 22 Dec 2016

Wolf-Zahl Catania	///
10cm Solarflux	075
AK Chambon La Forêt	033
AK Wingst	026
Geschätzer Ap-Wert	027
Geschätzte internationale Sonnenfleckenzahl	016 - Basierend auf 13 Stationen

Zusammenfassung auffälliger Ereignisse

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

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