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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Dec 17 1231 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
17 Dec 2019	070	006
18 Dec 2019	070	029
19 Dec 2019	070	021

Bulletin

Solar X ray flux remained below B level throughout the period. There are no active regions on disk and X-ray flux is expected to remain at background levels.

No Earth-directed CME's were detected in coronagraph images.

Solar high energy proton fluxes were at background levels and are expected to remain so.

Solar wind conditions were near nominal with Solar wind speed mostly around 350 km/s and total magnetic field under 5nT. The magnetic field phi angle is still in the negative sector. Later today the magnetic field phi angle is expected to switch into the positive sector, then followed by early tomorrow an increase of the Solar wind speed as the recurrent high speed stream from the equatorial coronal hole (positive polarity) sets in. Speeds are expected to reach around 600 km/s.

Geomagnetic conditions were quiet (NOA Kp 0-1 and local K Dourbes 0-2). Geomagnetic conditions are expected to rise by early tomorrow, associated to the high speed stream, reaching unsettled to active conditions tomorrow, with a slight possibility of an isolated minor geomagnetic storm episode.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 13 Stationen.

Solarindizes für den 16 Dec 2019

Wolf-Zahl Catania	000
10cm Solarflux	070
AK Chambon La Forêt	004
AK Wingst	002
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 14 Stationen

Zusammenfassung auffälliger Ereignisse

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

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