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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Mar 21 1230 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
21 Mar 2018	068	003
22 Mar 2018	068	011
23 Mar 2018	067	010

Bulletin

Solar activity was at very low levels. The Sun is spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar activity is expected to remain at very low levels.

Earth has left the coronal hole (CH) wind stream. Current solar wind parameters are at nominal levels. Solar wind speed decreased from 450 km/s to 330 km/s, and Bz varied mostly between -3 and +3 nT (DSCOVR). The interplanetary magnetic field was directed mostly away from the Sun before midnight, and mostly towards the Sun after midnight. Geomagnetic activity was at quiet levels.

Over the next few days, quiet to unsettled geomagnetic conditions are expected with a chance on an active episode from wind streams associated with the patchy equatorial CHs. The chance on an isolated minor storming interval is likely to increase by 24-25 March with the expected arrival of the wind stream related to the more prominent trailing extension of the southern polar CH.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 20 Stationen.

Solarindizes für den 20 Mar 2018

Wolf-Zahl Catania	000
10cm Solarflux	069
AK Chambon La Forêt	010
AK Wingst	008
Geschätzer Ap-Wert	008
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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