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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Aug 24 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
24 Aug 2018	071	032
25 Aug 2018	072	034
26 Aug 2018	071	021

Bulletin

X-ray flux remained below B level throughout the period. NOAA AR 2719 revived (Cro, Beta-Gamma) and there is a new region emerging near N7W20 which appears a fairly simple bipolar region. X-ray flux is expected to remain below C level.

No new Earth directed CMEs were observed in coronagraph data.

Proton flux levels were at background values and are expected to remain so.

Solar wind speed declined further to around 360 km/s. A number of sudden density and magnetic field increases occurred since around 6:00UT. These are possibly representing the first signs of the August 20 CME. Total magnetic field grew to 7nT with recently a peak of Bz down to -6nT. Further increases of magnetic field strength can be anticipated with the possibility of periods of persistent Southward magnetic field orientation over the next 24 to 48 hours. Afterwards, Solar wind conditions should recover to nominal.

Geomagnetic conditions were quiet (both local K Dourbes and NOAA Kp 0-2). Active geomagnetic conditions and possibly minor geomagnetic storms must be anticipated over the next 24 to 48 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 029, basierend auf 23 Stationen.

Solarindizes für den 23 Aug 2018

Wolf-Zahl Catania	///
10cm Solarflux	070
AK Chambon La Forêt	006
AK Wingst	006
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	016 - Basierend auf 31 Stationen

Zusammenfassung auffälliger Ereignisse

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

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