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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 May 25 1341 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
25 May 2017	074	001
26 May 2017	073	008
27 May 2017	074	016

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. NOAA Active Region (AR) 2660 has been most active, producing two B-class flares. No Earth directed Coronal Mass Ejections (CMEs) have been detected in coronagraph observations. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a small chance for C-class flares. Solar wind speed decreased from about 475 km/s to values around 370 km/s. The total interplanetary magnetic field (IMF) strength, as recorded by the DSCOVR satellite, was around 3.5 nT. Bz fluctuated between -2 and +3 nT. Geomagnetic conditions (K Dourbes between 0 and 3; NOAA Kp between 0 and 1) were ranged from quiet to unsettled level in the past 24 hours. Solar wind speed is expected to decrease even more today. In response geomagnetic conditions are likely to experience mostly quiet to unsettled conditions today (25-May-2017 April) and tomorrow (26-May-2017). Active conditions with a small chance for minor geomagnetic storm are possible on the day three (27-May-2017) due to possible arrival of 23-May 2017 coronal mass ejection.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 027, basierend auf 24 Stationen.

Solarindizes für den 24 May 2017

Wolf-Zahl Catania	035
10cm Solarflux	078
AK Chambon La Forêt	008
AK Wingst	004
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	024 - Basierend auf 31 Stationen

Zusammenfassung auffälliger Ereignisse

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

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