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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Apr 02 1239 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
02 Apr 2015	122	012
03 Apr 2015	121	028
04 Apr 2015	124	010

Bulletin

Five sunspot groups were reported by NOAA today. However, the only C-class flare observed during the past 24 hours (C1.3 flare peaking at 05:34 UT today) occurred in the active region just behind the east solar limb. More C-class flares are expected from this active region. The C1.3 flare was associated with a partial halo CME (angular width around 150 degrees). It is a far side limb event, so it will not arrive at the Earth and will have no geomagnetic consequences. The Earth is currently inside a slow solar wind flow following the passage through the ICME on March 31 - April 1. The interplanetary magnetic field magnitude is still elevated (around 7-8 nT), but a relatively low solar wind speed (around 450 km/s) makes sure that the geomagnetic situation will most probably remain on the quiet to unsettled level in the coming hours. Later today we expect the arrival of a fast flow from a trans-equatorial coronal hole that reached the solar central meridian late on March 30, possibly resulting in a geomagnetic disturbance up to the minor storm level (K = 5).

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 025, basierend auf 14 Stationen.

Solarindizes für den 01 Apr 2015

Wolf-Zahl Catania	///
10cm Solarflux	124
AK Chambon La Forêt	015
AK Wingst	009
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	028 - Basierend auf 20 Stationen

Zusammenfassung auffälliger Ereignisse

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

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