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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Aug 25 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

C-class flares expected, (probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
25 Aug 2017	078	005
26 Aug 2017	077	007
27 Aug 2017	076	007

Bulletin

Active Region (AR) 2672 (McIntosh class: Esi; Mag.type: Beta- Gamma) produced C5.5 flare peaking at 07:27 UT today. AR 2671 (McIntosh class: Fsi; Mag.type: Beta-Gamma) produced multiple B-class flares during the past 24 hours; the largest flare was B8.4 flare peaking at 15:58 UT yesterday. No Earth directed Coronal Mass Ejections (CMEs) have been detected in available coronagraph imagery. Solar activity is expected to be at C-class flaring level for the next three days. Solar wind parameters variations decayed over the past 24 hours. The solar wind speed decreased from 410 to 350 km/s. The total magnetic field strength remained below 5.5 nT. The Bz component fluctuated around 0 nT but was mainly positive, ranging between -3.5 and +4 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be mostly quiet with some isolated episodes of Kp=3.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 050, basierend auf 24 Stationen.

Solarindizes für den 24 Aug 2017

Wolf-Zahl Catania	050
10cm Solarflux	079
AK Chambon La Forêt	010
AK Wingst	010
Geschätzer Ap-Wert	012
Geschätzte internationale Sonnenfleckenzahl	052 - Basierend auf 29 Stationen

Zusammenfassung auffälliger Ereignisse

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

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