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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Jan 20 1231 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
20 Jan 2020	072	005
21 Jan 2020	072	008
22 Jan 2020	071	004

Bulletin

Solar activity was at very low levels. On disk signatures of an eruption were observed at around 18:30 UT on Jan 19 from a newly emerged region in the north east of the solar disk, as yet unnumbered by NOAA. The observed region produced a small flare and coronal dimming indicating the existence of a possible associated Coronal Mass Ejection (CME). However, no coronagraph images are currently available to confirm the existence or direction of the CME. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

The solar wind speed fluctuated between from 280 km/s to 350 km/s (ACE). The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector). Bz varied between -3 and +3 nT.

Geomagnetic activity was quiet, with the Kp index (NOAA) and the local k index (Dourbes) recording values of between 0 and 1. Quiet to unsettled conditions are expected on Jan 20-22 with possible isolated active conditions on Jan 20, due to the combined influence from the patchy negative polarity coronal hole that traversed the central meridian on Jan 16 and the CME that was observed on Jan 14.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 15 Stationen.

Solarindizes für den 19 Jan 2020

Wolf-Zahl Catania	///
10cm Solarflux	072
AK Chambon La Forêt	003
AK Wingst	001
Geschätzer Ap-Wert	001
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 31 Stationen

Zusammenfassung auffälliger Ereignisse

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

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