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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Sep 06 1445 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
06 Sep 2018	067	009
07 Sep 2018	068	015
08 Sep 2018	068	010

Bulletin

Solar activity was at very low levels. The Sun was spotless again. No earth-directed coronal mass ejections (CMEs) were observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. A positive polarity coronal hole (CH) is approaching the Central Meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed increased from an initial 490 km/s to a maximum of about 510 km/s around 13UT, before gradually declining to its current values just above 400 km/s (DSCOVR). Bz softened from -6 nT at the beginning of the period to a more stable range between -3 and +2 nT after 18UT. The direction of the interplanetary magnetic field was mostly in a positive sector (away from the Sun), with some negative excursions.

Quiet to unsettled geomagnetic conditions were observed, with K Dourbes recording an isolated active episode during the 10-13UT interval on 5 September. Quiet to active geomagnetic conditions are expected in response to the arrival later today or tomorrow (7 September) of the co-rotating interaction region (CIR) and wind stream from the negative polarity CH. A minor storming episode is not excluded.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 21 Stationen.

Solarindizes für den 05 Sep 2018

Wolf-Zahl Catania	000
10cm Solarflux	068
AK Chambon La Forêt	014
AK Wingst	014
Geschätzer Ap-Wert	014
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 30 Stationen

Zusammenfassung auffälliger Ereignisse

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

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