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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Jan 25 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
25 Jan 2017	084	005
26 Jan 2017	083	005
27 Jan 2017	082	031

Bulletin

Solar activity was very low. NOAA 2629, a new sunspot region near the east limb, developed quickly into a mature group and produced a series of B-class flares. The strongest event was a B5 flare peaking at 17:55UT. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Mostly quiet flaring conditions are expected, with a chance on a C-class event in particular from NOAA 2629.

Solar wind speed varied between 310 and 350 km/s (ACE). Bz intensified somewhat and was fluctuating between -6 nT and +6 nT. The interplanetary magnetic field was mostly directed away from the Sun. A small positive equatorial coronal hole (CH) transited the central meridian.

The geomagnetic field was at quiet to unsettled levels and is expected to remain so. The CH's particle stream is expected to arrive at Earth around 27 January and may result in active to minor storming episodes.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 046, basierend auf 05 Stationen.

Solarindizes für den 24 Jan 2017

Wolf-Zahl Catania	053
10cm Solarflux	082
AK Chambon La Forêt	008
AK Wingst	003
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	043 - Basierend auf 14 Stationen

Zusammenfassung auffälliger Ereignisse

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

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