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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Nov 21 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
21 Nov 2019	070	012
22 Nov 2019	070	021
23 Nov 2019	070	005

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. However, a compact bright structure, located at low-latitude near the central meridian, has shown some evidence of activity. There is currently a low-latitude positive-polarity patchy coronal hole located in the Western Hemisphere. Solar activity is expected to remain at low levels for the next 24 hours.

There was a small filament eruption in the north west quadrant of the Sun. The eruption was observed to be moving predominantly to the west in coronagraph imagery. The plane-of-sky speed, as measure by CACTUS, reached around 650 km/s, and although the effects are expected to be small, the CME may arrive around mid day on 23-Nov-2019.

The greater than 10 MeV proton flux was at nominal values.

The solar wind speed has increased from around 300 to 500 km/s over the past 12 hours. The total magnetic field strength has fluctuated between 2 nT and 10 nT. The Bz component fluctuated around 0 nT, ranging between -7 and +8 nT. Geomagnetic conditions ranged between Kp index 0-2 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours.

Geomagnetic conditions have increased a little (K=2) due to the arrival of a high speed stream from a small low latitude positive polarity Coronal Hole around 21:00 UT yesterday. Geomagnetic conditions are expected to be enhanced at least over the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 08 Stationen.

Solarindizes für den 20 Nov 2019

Wolf-Zahl Catania	000
10cm Solarflux	070
AK Chambon La Forêt	005
AK Wingst	002
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 22 Stationen

Zusammenfassung auffälliger Ereignisse

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

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