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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Aug 28 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
28 Aug 2020	071	012
29 Aug 2020	071	028
30 Aug 2020	071	024

Bulletin

Solar X-ray flux has been below background (B) level throughout the period. There are no spotted regions on disc and X-ray flux is expected to remain at or below background (B) values.

There were no Earth directed coronal mass ejections observed in coronagraph data.

The greater than 10 MeV proton flux was at background levels over the past 24 hours. It is expected to stay at background levels for the next 24 hours. The greater than 2 MeV electron flux was at nominal levels over the past 24 hours. A gradual increase can be expected over the next days related to ongoing elevated Solar wind conditions.

Another low latitude coronal hole with positive polarity is currently rotating over the central meridian in the Northern hemisphere (It is currently not connected to the polar coronal hole). It's impact on near Earth Solar wind may be expected by September 1.

Solar wind conditions remained weakly enhanced, with Solar wind speed in to 400-450 km/s range. The total magnetic field was in the 3-7 nT range with the Bz component starting the period with a peak down to -6nT. The magnetic field phi angle was in the away sector (+) throughout the period. Solar wind is expected to remain moderately enhanced with a renewed increase likely to set in as a number of coronal holes are lining up.

Geomagnetic conditions saw a local active episode at the start of the period (K Dourbes 4, while NOAA Kp 3) but were otherwise quiet (K Dourbes 0-2 and NOAA Kp 0-1). Geomagnetic conditions are expected to be at first mostly quiet to unsettled with active periods becoming increasingly more likely over the next 48 hours.

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

Solarindizes für den 27 Aug 2020

Wolf-Zahl Catania	///
10cm Solarflux	070
AK Chambon La Forêt	011
AK Wingst	010
Geschätzer Ap-Wert	009
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 25 Stationen

Zusammenfassung auffälliger Ereignisse

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

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