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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Feb 25 1235 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
25 Feb 2015	114	008
26 Feb 2015	112	007
27 Feb 2015	112	007

Bulletin

No C-class flares in past 24h. A partial halo CME was observed on February 24 at 10:24 UT (first seen by LASCO-C2). It originates from a partially backsided filament eruption around the southeast limb of the Sun. This CME is not expected to hit the Earth. Shortly after (around 11:00 UT) signs of an eruption are seen in NOAA AR 2289 (mostly dimmings), this may correspond to a slow CME (~300 km/s) directed towards the southwest, seen first at 14:24 UT by LASCO-C2. Additionally, a CME erupted at 23:36 UT (Feb 24) from a filament eruption close to NOAA AR 2291, again the speed was low (~200 km/s). These last two CMEs may have a minor influence on Earth by March 1st. Geomagnetic conditions have ranged from quiet to unsettled due to the vanishing effect of a fast speed stream, these conditions are expected to prevail in the next 48h. TODAY'S ESTIMATED ISN : ///, BASED ON /// STATIONS.

Solarindizes für den 24 Feb 2015

Wolf-Zahl Catania	///
10cm Solarflux	114
AK Chambon La Forêt	016
AK Wingst	027
Geschätzer Ap-Wert	030
Geschätzte internationale Sonnenfleckenzahl	037 - Basierend auf 07 Stationen

Zusammenfassung auffälliger Ereignisse

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

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