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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Nov 21 1308 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
21 Nov 2017	074	032
22 Nov 2017	075	015
23 Nov 2017	074	011

Bulletin

Over the past 24 hours solar activity has been quiet. No significant flares have been recorded. All Active Regions (AR) have shown low levels of activity. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares.

The solar wind speed been increasing from 300 and 600 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 4 nT and 14 nT. The Bz component has fluctuated between positive and negative, fluctuating between -13 and +14 nT. Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index 1-4 (Dourbes) over the past 24 hours. A positive polar coronal hole is currently positioned in the Western hemisphere of the Sun and the resulting high-speed stream (HSS) has enhanced solar wind speeds and as a consequence increased geo-activity levels. Geomagnetic conditions are expected to remain unsettled throughout the day, but should begin to return to quiet conditions at the end of the day.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 12 Stationen.

Solarindizes für den 20 Nov 2017

Wolf-Zahl Catania	012
10cm Solarflux	074
AK Chambon La Forêt	026
AK Wingst	007
Geschätzer Ap-Wert	007
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 15 Stationen

Zusammenfassung auffälliger Ereignisse

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

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