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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2018 Feb 26 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
26 Feb 2018	069	008
27 Feb 2018	070	011
28 Feb 2018	071	006

Bulletin

There are presently no numbered sunspot regions on the visible side of the solar disk. Accordingly, solar activity is extremely low (last B-class flare was reported about a week ago). We expect such a low activity to persist in the coming days. Coronagraph images do not show signatures of the Earth directed CMEs, and the solar protons remained at the background level.

The solar wind speed is presently about 430 km/s and the interplanetary magnetic field magnitude is 5 nT. In the coming hours we might expect some increase of the solar wind speed, associated with the equatorial coronal hole (possibly connected to the southern polar coronal hole) which reached central meridian in the late evening of February 22. Rather small and patchy equatorial coronal hole reached central meridian this morning. The associated increase of the solar wind speed might be expected in the morning of March 02. The geomagnetic conditions are presently quiet and we expect quiet to unsettled geomagnetic conditions in the coming hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 016, basierend auf 19 Stationen.

Solarindizes für den 25 Feb 2018

Wolf-Zahl Catania	///
10cm Solarflux	067
AK Chambon La Forêt	011
AK Wingst	006
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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