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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Aug 31 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
31 Aug 2019	066	031
01 Sep 2019	066	019
02 Sep 2019	066	015

Bulletin

The solar activity has been quiet over the past 24 hours. The Sun is currently spotless and the X-ray flux remained below B-level. Solar activity is expected to remain at low levels for the next 24 hours.

No Earth-directed coronal mass ejections (CME) were observed over the past 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux remained at background levels over the past 24 hours and is expected to remain at low levels. A large low latitude coronal hole passed the central meridian of the Sun yesterday.

The Earth is currently under the influence of fast solar wind conditions, due to the High Speed Stream (HSS) from a Coronal Hole. The solar wind speed has increased from 380 to 670 km/s. The total magnetic field strength has fluctuated between 5 nT and 12 nT over the past 24 hours. The Bz component fluctuated around 0 nT, ranging between -10 and +10 nT (as recorded by ACE). Geomagnetic conditions ranged between Kp index 3-5 (NOAA) and local K index 2-4 (Dourbes) over the past 24 hours.

The solar wind speed has increased over the past 24 hours due to the HSS from a recurrent low-latitude equatorial coronal hole of positive polarity. Active geomagnetic conditions have been experienced as a consequence. Enhanced solar wind conditions are anticipated for the next couple of days.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 28 Stationen.

Solarindizes für den 30 Aug 2019

Wolf-Zahl Catania	///
10cm Solarflux	067
AK Chambon La Forêt	024
AK Wingst	014
Geschätzer Ap-Wert	014
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 32 Stationen

Zusammenfassung auffälliger Ereignisse

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

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