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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 May 26 1247 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
26 May 2018	076	003
27 May 2018	077	005
28 May 2018	076	011

Bulletin

Solar activity was at low levels. The largest flare B3.7 originated at NOAA AR 2711 (McIntosh: Cso; Mag.Type: Beta) peaked yesterday (25-May-2018) at 20:09 UT. NOAA AR 2710 decayed to Halpha plage. No earth- directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. Solar activity is expected to be at low levels with some probability for C class flares. Solar wind parameters returned to the background level. The solar wind speed gradually decreased from 375 km/s till about 320 km/s. The total magnetic field was below 5 nT. The Bz component fluctuated around 0nT between -1 nT and +3 nT. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet today and tomorrow. Later, from 28-May-2017 most likely unsettled geomagnetic conditions can be expected due to the weak influence from a positive polarity low lattitude extension of the northern coronal hole.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 028, basierend auf 18 Stationen.

Solarindizes für den 25 May 2018

Wolf-Zahl Catania	035
10cm Solarflux	076
AK Chambon La Forêt	///
AK Wingst	004
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	033 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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