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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2016 Sep 28 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
28 Sep 2016	085	049
29 Sep 2016	081	030
30 Sep 2016	078	011

Bulletin

Solar activity is very low with only B-class flares reported. We expect solar activity to be low with possible, but not very probable, isolated C-class flare from the only active region observed on the visible side of the solar disc, NOAA AR 2597. No Earth directed CMEs were observed in the last 24 hours. The Earth is presently inside the fast solar wind with the speed of about 660 km/s (the peak value of 740 km/s was reached early this morning), and the interplanetary magnetic field magnitude is about 7 nT. The arrival of the fast solar wind from the coronal hole in the northern hemisphere with a low latitude extension (possibly also connected to the coronal hole on the southern hemisphere) has induced disturbed geomagnetic conditions in the evening of September 27 and early morning of September 28. The combination of the fast solar wind speed (about 600 km/s) and the intervals of the negative value of the Bz component of the interplanetary magnetic field (down to -9 nT), has caused the moderate storm conditions. The Potsdam station reported up to K=6, and NOAA reported Kp=6. We expect disturbed geomagnetic conditions to continue in the coming hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 032, basierend auf 20 Stationen.

Solarindizes für den 27 Sep 2016

Wolf-Zahl Catania	036
10cm Solarflux	086
AK Chambon La Forêt	051
AK Wingst	036
Geschätzer Ap-Wert	039
Geschätzte internationale Sonnenfleckenzahl	025 - Basierend auf 33 Stationen

Zusammenfassung auffälliger Ereignisse

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

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