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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Apr 14 1304 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
14 Apr 2017	074	017
15 Apr 2017	075	013
16 Apr 2017	074	011

Bulletin

Solar activity was at very low levels. No flares were observed during the reporting period. CACTUS detected a narrow NW CME from LASCO C2 images around 17:36 UT yesterday. This CME is not expected to be geoeffective. Integral proton flux for protons with energies above 10 MeV remained at background level. B-class flaring is expected.

Solar wind speed fluctuated strongly between 450 km/s to 400 km/s during the period. The interplanetary magnetic field gradually increased from 3 nT to 8 nT. Bz fluctuated between -3 and +3 nT before 00 UT and then gradually decreased to -6 nT. Geomagnetic conditions were ranged K Dourbes between 1 and 3; NOAA Kp between 1 and 4 during the reporting period. A high speed stream from a positive coronal hole (CH HSS) is expected to disturb further the solar wind environment. Active geomagnetic conditions are expected. Isolated episodes of minor storm are possible

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 016, basierend auf 15 Stationen.

Solarindizes für den 13 Apr 2017

Wolf-Zahl Catania	028
10cm Solarflux	074
AK Chambon La Forêt	014
AK Wingst	005
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	024 - Basierend auf 30 Stationen

Zusammenfassung auffälliger Ereignisse

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

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