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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Jan 31 1242 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
31 Jan 2019	074	017
01 Feb 2019	072	025
02 Feb 2019	070	011

Bulletin

No C-class flares in the past 24 hours, NOAA AR 2733 rotated over the west limb. There are no active regions visible. Eight B-class flares were observed (still from NOAA AR 2733), the strongest one was a B9.7 flare peaking at 17:05 UT on 30 January. Low solar activity is expected.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 350 km/s with interplanetary magnetic fields of 14 nT. Geomagnetic conditions have been quiet. Solar wind density, speed, temperature and magnetic field have been increasing since last night, together with a sector boundary crossing (from positive to negative magnetic field polarity), marking the arrival of the fast solar wind associated with a negative polarity equatorial coronal hole. Disturbed geomagnetic conditions (most likely up to K=5) are expected for the next 48 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 16 Stationen.

Solarindizes für den 30 Jan 2019

Wolf-Zahl Catania	012
10cm Solarflux	074
AK Chambon La Forêt	005
AK Wingst	002
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 21 Stationen

Zusammenfassung auffälliger Ereignisse

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

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