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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Oct 21 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
21 Oct 2018	070	013
22 Oct 2018	069	001
23 Oct 2018	068	001

Bulletin

There are no active regions visible on the solar disk. No C-class flares in past 24 h. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 330 km/s with interplanetary magnetic fields of 8 nT. Geomagnetic conditions have been quiet. A sector boundary crossing occurred around 07:00 UT, the interplanetary magnetic field polarity changed from negative to positive. The solar wind speed started increasing since then, marking the late arrival of the high speed solar wind stream associated with the low latitudinal extension of the northern polar coronal hole coming to Earth. The effect is expected to be weak, producing up to active periods. A patchy negative polarity coronal hole traversed central meridian yesterday, its associated high speed stream will affect the Earth around October 24.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 17 Stationen.

Solarindizes für den 20 Oct 2018

Wolf-Zahl Catania	///
10cm Solarflux	070
AK Chambon La Forêt	005
AK Wingst	002
Geschätzer Ap-Wert	001
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 28 Stationen

Zusammenfassung auffälliger Ereignisse

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

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