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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Sep 30 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
30 Sep 2019	067	019
01 Oct 2019	067	016
02 Oct 2019	067	011

Bulletin

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

Solar activity is expected to remain at very low levels.

Solar wind speed declined from initial values around 530 km/s to 440 km/s at the end of the period (ACE). Bz was weakly but almost continuously negative with sustained values near -5 nT. These solar wind conditions resulted in some active geomagnetic intervals in both Kp and K Dourbes. The interplanetary magnetic field (phi angle) was mostly directed away from the Sun (positive sector).

Geomagnetic activity is expected to be mostly at quiet to unsettled levels, as the Earth remains under the gradually weakening influence from the coronal hole wind stream. There remains a chance on an active episode.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 25 Stationen.

Solarindizes für den 29 Sep 2019

Wolf-Zahl Catania	///
10cm Solarflux	067
AK Chambon La Forêt	030
AK Wingst	014
Geschätzer Ap-Wert	016
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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