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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 May 27 1231 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
27 May 2015	098	006
28 May 2015	103	016
29 May 2015	108	008

Bulletin

Solar activity once again was very low. No significant flares were observed. Activity was limited to a partial eruption of the filament in the SW quadrant (from 13:26 UT on) and a small filament eruption near plage 2351 (from 22:00 UT on). A few regions are currently at the East limb that could introduce some activity. No Earth-bound CMEs were observed yet.

The solar wind speed remains low in the range of 280-360 km/s. The magnitude of the magnetic field was maximally 12 nT. A sector boundary crossing occurred around 16:00 UT on May 26 going from a negative to a positive orientation, which seems to be changing again from 10:30 UT. Geomagnetic conditions are quiet (K <4) and are expected to remain so till the expected coronal hole high speed stream arrives on May 28.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 017, basierend auf 18 Stationen.

Solarindizes für den 26 May 2015

Wolf-Zahl Catania	///
10cm Solarflux	095
AK Chambon La Forêt	011
AK Wingst	010
Geschätzer Ap-Wert	009
Geschätzte internationale Sonnenfleckenzahl	039 - Basierend auf 29 Stationen

Zusammenfassung auffälliger Ereignisse

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

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