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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Oct 22 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
22 Oct 2019	065	005
23 Oct 2019	065	013
24 Oct 2019	065	046

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.

Around midnight a filament erupted from the South-Eastern quadrant as visible in SDO/AIA 304 images. STEREOA/COR2 images (data up to 4:24 UT) do not show a corresponding CME. We are awaiting further coronagraph images to assess the eruption more properly. There were otherwise no Earth-directed CME's 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 increasing only slightly from around 330 to around 360 km/s and total magnetic field remaining below 5nT. The magnetic field phi angle was mainly in the negative sector. It is unlikely that we would still see some enhancements due to the negative polarity coronal hole reported on October 17. Solar wind is expected to remain near nominal over the next 24 hours, but is expected to increase significantly by October 24 due to the recurrent high speed stream from the equatorial positive polarity coronal hole reported yesterday.

Geomagnetic conditions were quiet (both NOAA Kp and local K Dourbes 0-2) and are expected to remain quiet to unsettled over the next 24 hours. By October 24, associated to the expected high speed stream, geomagnetic conditions are expected to reach active levels and periods of minor geomagentic storming. There is a chance that moderate storm levels (K=6) be reached.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 18 Stationen.

Solarindizes für den 21 Oct 2019

Wolf-Zahl Catania	000
10cm Solarflux	064
AK Chambon La Forêt	///
AK Wingst	///
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 17 Stationen

Zusammenfassung auffälliger Ereignisse

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

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