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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Apr 03 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
03 Apr 2015	121	021
04 Apr 2015	123	021
05 Apr 2015	128	012

Bulletin

The strongest flare of the past 24 hours was the C1.7 flare peaking at 07:26 UT today in the Catania sunspot group 21 (no NOAA number yet) that has just crossed the east limb. More C-class flares are expected in this group, with a small chance for an M-class flare. The solar wind speed is currently around 550 km/s, probably indicating the imminent arrival of a fast stream from the trans-equatorial coronal hole. The interplanetary magnetic field (IMF) is currently around 7 nT. Yesterday evening, in the interaction region between the fast stream and the preceding slow flow, the IMF Bz component stayed negative (down to -10 nT) for around 3 hours, so active geomagnetic conditions (K = 4) were reported by IZMIRAN and NOAA. (Intervals of K = 5 reported this morning by Dourbes are most probably spurious.) We expect active to minor storm conditions in the coming hours as the Earth will be going through the fast solar wind stream.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 021, basierend auf 10 Stationen.

Solarindizes für den 02 Apr 2015

Wolf-Zahl Catania	///
10cm Solarflux	121
AK Chambon La Forêt	029
AK Wingst	015
Geschätzer Ap-Wert	017
Geschätzte internationale Sonnenfleckenzahl	025 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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