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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 May 26 1313 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 2017	076	001
27 May 2017	077	007
28 May 2017	078	008

Bulletin

Over the past 24 hours solar activity has been low. Four B-class flares have been recorded produced by the decaying NOAA Active Region (AR) 2660 and by the developing Active Region NOAA 2659 (McIntosh Class: Dsi, Mag. Type: Beta). One returning NOAA AR is expected to appear at the east solar limb in the next 24 hours. No earth-directed coronal mass ejections (CME) have been observed. The greater than 2 MeV electron flux measured by GOES reached high levels. Solar protons have remained at background levels. Solar activity is expected to remain low over the next 24 hours with a high chance of B-class flares and some probability of C-class flares.

The variations of the solar wind parameters were weak. Solar wind speed decreased from 370 km/s till 320 km/s during the last 24 hours. The magnitude of the Interplanetary Magnetic Field (Bt) remained below 5 nT. The Bz component fluctuated between between -3 and +3 nT. Geomagnetic conditions have been very quiet in the past 24 hours (K Dourbes between 0 and 2; NOAA Kp between 1 and 2). Geomagnetic activity is expected to continue at low levels today (26-May-2016). Active to minor geomagnetic storm conditions (Kp NOAA between 3 and 4) are possible from tomorrow 27-May-2017 due to the possible arrival of the 23-May-2017 CME.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 026, basierend auf 28 Stationen.

Solarindizes für den 25 May 2017

Wolf-Zahl Catania	///
10cm Solarflux	076
AK Chambon La Forêt	008
AK Wingst	004
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	030 - Basierend auf 27 Stationen

Zusammenfassung auffälliger Ereignisse

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

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