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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Nov 16 1235 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
16 Nov 2019	070	007
17 Nov 2019	070	018
18 Nov 2019	070	012

Bulletin

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

No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

The solar wind parameters were mostly at nominal values. On Nov 16, a minor enhancement of the solar wind environment was observed starting around 18:00 UT. This enhancement can be associated with the sector bordering crossing announcing the soon arrival of the expected coronal hole influence. The total magnetic field reached 7 nT around 19:30, the solar wind speed went up to 400 km/s, and the southern component of the magnetic filed fluctuated between -5.7 nT and 5 nT. The solar wind parameters are expected to return close to the nominal values for a short period of a few hours. Then we expect new enhancements of the solar wind parameters to start later today on Nov 16 or early 17 due to the influence of the negative polarity coronal hole high-speed streams, which has reached the central meridian on Nov 13.

Quiet geomagnetic conditions were observed over the past 24 hours. It is expected to remain so for a short period of a few hours until the arrival of influence due to the high-speed stream coming from the coronal hole later in Nov 16-17 were more active conditions are expected.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 14 Stationen.

Solarindizes für den 15 Nov 2019

Wolf-Zahl Catania	000
10cm Solarflux	070
AK Chambon La Forêt	007
AK Wingst	///
Geschätzer Ap-Wert	003
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 12 Stationen

Zusammenfassung auffälliger Ereignisse

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

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