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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Aug 26 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
26 Aug 2020	071	013
27 Aug 2020	071	012
28 Aug 2020	071	013

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 and is expected to remain so over the next 24 hours.

Another coronal hole of positive polarity seems to be forming around disc centre and adds to the likelihood of Solar wind perturbations later in the week.

Solar wind conditions showed the expected enhancements. Solar wind speed rose from under 350 km/s to currently just under 450 km/s. The magnetic field phi angle switched into the away sector early in the period. The total magnetic field reached a peak of 8.5 nT this morning and remains at levels around 6nT, while Bz was overall variable. As other coronal holes are lining up, these moderate Solar wind enhancements are expected to last on and off over the next days.

Quiet to unsettled geomagnetic conditions have been recorded (NOAA Kp 1-2 while local K Dourbes reaching 3 just recently). Geomagnetic conditions are expected to be mostly quiet to unsettled, with some isolated active periods not excluded depending on the evolution of the Solar wind enhancements.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 14 Stationen.

Solarindizes für den 25 Aug 2020

Wolf-Zahl Catania	///
10cm Solarflux	071
AK Chambon La Forêt	009
AK Wingst	004
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 23 Stationen

Zusammenfassung auffälliger Ereignisse

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

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