Archiv von Donnerstag, 30 April 2015 anzeigen

Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Apr 30 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
30 Apr 2015	106	017
01 May 2015	110	008
02 May 2015	114	008

Bulletin

The solar disk currently is almost spotless. One single C1.0 flare occurred at the southwest limb. A faint CME was visible, with first measurement in SOHO/LASCO-C2 at 2:24 UT on April 30, related to backside activity and propagating north. There is some chance (40%) for further C-class flares. Solar wind observations indicate the arrival of a flow related to a positive polarity coronal hole. Around 4:00 UT on April 30, temperature and solar wind speed increased (currently at 370 km/s), while the magnitude of the Interplanetary Magnetic Field (IMF) became more variable and increased to 12 nT. The south component of the IMF is fluctuating between -6 and +8nT. Quiet to unsettled (local K=0 to 3 at Dourbes) geomagnetic conditions were observed. Mainly quiet geomagnetic conditions are expected, with some chance for a few time slots of active (K=4) to minor storm (K=5) conditions within the next 24 hours. Another flow emanating from the extension of a negative polarity northern coronal hole could arrive on May 2.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 011, basierend auf 23 Stationen.

Solarindizes für den 29 Apr 2015

Wolf-Zahl Catania	036
10cm Solarflux	104
AK Chambon La Forêt	011
AK Wingst	004
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	020 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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