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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2016 Apr 21 1230 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
21 Apr 2016	080	006
22 Apr 2016	079	013
23 Apr 2016	079	022

Bulletin

Quiet solar conditions were observed with the X ray flux remaining below C level. The occassional B flares were produced by Catania group 54 (NOAA 2529) as it rotated over the West limb. The other two regions are unremarkable and appear inactive. Quiet solar conditions are expected to continue over the next days. No Earth directed CMEs were observed in coronagraph data. Solar wind conditions were nominal but slightly increasing. Solar wind speed reached 450 km/s and total magnetic field strength was in the 5-9.5nT range. Bz was variable but mostly positive while the magnetic field phi angle remained in the positive sector. Solar wind conditions are expected to by April 23 become slightly increased due to the influence of the positive polarity trans-equatorial coronal hole. Geomagnetic conditions were quiet to unsettled (NOAA Kp 0-2, local K Dourbes 0-3). Periods of active conditions are possible by April 23 due to the coronal hole high speed stream influence.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 026, basierend auf 23 Stationen.

Solarindizes für den 20 Apr 2016

Wolf-Zahl Catania	041
10cm Solarflux	083
AK Chambon La Forêt	009
AK Wingst	004
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	025 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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