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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Jun 12 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
12 Jun 2019	069	012
13 Jun 2019	068	015
14 Jun 2019	068	008

Bulletin

Solar activity was at very low levels. The solar disk was spotless. No coronal mass ejections (CME) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind parameters were at nominal levels until around 09UT when the interplanetary magnetic field changed its direction from towards to away from the Sun. This coincided with a gradual increase of the solar wind speed from about 300 km/s to its current 370 km/s, and Bz starting to vary between -5 and +5 nT. Solar wind density, which had been steadily increasing from 5/cm3 to 24/cm3 over the period, quickly dropped to 4/cm3 after 09UT. These changes in the solar wind parameters reflect the arrival of the co-rotating interaction region (CIR) and the wind stream associated with the extension of the positive polarity northern polar coronal hole (CH). Quiet geomagnetic conditions were observed.

Quiet to active geomagnetic conditions are expected in response to the wind stream from the CH.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 15 Stationen.

Solarindizes für den 11 Jun 2019

Wolf-Zahl Catania	000
10cm Solarflux	070
AK Chambon La Forêt	006
AK Wingst	002
Geschätzer Ap-Wert	002
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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