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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Apr 18 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
18 Apr 2020	068	007
19 Apr 2020	068	004
20 Apr 2020	069	013

Bulletin

There were no sunspot regions on the visible solar disk. Solar activity was at very low levels and is expected to remain so.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal values and are expected to remain so.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind speed undulated between 290 and 350 km/s (DSCOVR). Bz varied between -6 and +3 nT. The direction of the interplanetary magnetic field (phi angle) was in a mostly sunward orientation (negative sector).

Geomagnetic activity was at quiet levels. Geomagnetic conditions are expected to be quiet to unsettled, with an active interval possible on 20 April in response to the expected wind stream associated with the extension of the negative polarity southern polar coronal hole.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 19 Stationen.

Solarindizes für den 17 Apr 2020

Wolf-Zahl Catania	///
10cm Solarflux	068
AK Chambon La Forêt	008
AK Wingst	004
Geschätzer Ap-Wert	003
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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