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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 May 24 1316 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
24 May 2018	073	004
25 May 2018	072	006
26 May 2018	073	007

Bulletin

Newly numbered Catania sunspot group 84 rotating around the East limb produced multiple B flares yesterday. The largest flare was a C2.0 flare peaking at 18:21 UT. NOAA Active Regions 2710 and 2711 were mostly inactive. 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 decreasing varitations indicate fainting influence of positive polarity extension of the northern polar coronal hole. Solar wind speed gradually decreased during the period till around 470 km/s after reaching maximum of 550 km/s at 17:00 UT yesterday. Total magnetic field magnitude declined from 6.5 to 2 nT, while Bz component is varying now between -1.7 and +1.7 nT. Geomagnetic conditions reached unsettled levels (K= 3) during 06 - 15 UT yesterday, then both local index (Dourbes) and planetary (NOAA) returned to quiet levels. Mainly quiet geomgnetic conditions can be expected from now.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 035, basierend auf 22 Stationen.

Solarindizes für den 23 May 2018

Wolf-Zahl Catania	031
10cm Solarflux	073
AK Chambon La Forêt	012
AK Wingst	010
Geschätzer Ap-Wert	012
Geschätzte internationale Sonnenfleckenzahl	027 - Basierend auf 27 Stationen

Zusammenfassung auffälliger Ereignisse

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

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