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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2022 Jan 21 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

C-class flares expected, (probability >=50%)

Geomagnetismus

Active conditions expected (A>=20 or K=4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
21 Jan 2022	099	011
22 Jan 2022	097	010
23 Jan 2022	095	010

Bulletin

There are 5 visible active regions on the solar disk, but none has produced C-class flares or higher in the past 24 hours. NOAA AR 2929 and 2930, that produced most of the activity in the last days, are rotating over the west limb, and the others are reducing in size and complexity. C-class flares can still be expected in the next 24 hours.

No Earth directed CMEs have been observed in the last 24 hours.

The greater than 10 MeV proton flux had exceeded the 10 pfu threshold yesterday, but it’s now back to values below the threshold. The greater than 2 MeV electron flux increased slightly above the 1000 pfu alert threshold and is expected to remain close to the threshold during the next 24 hours. The 24h electron fluence was at moderate levels and is expected to remain so in the next 24 hours.

The solar wind speed at Earth decreased to about 420 km/s, and the interplanetary magnetic field around 4 nT. Slow solar wind conditions are expected for the next 24 hours.

Geomagnetic conditions were quiet (K_Bel 0 - 2 and Kp 1 - 2). The CME from 18 January may arrive to the Earth in the coming 24 hours, increasing geomagnetic conditions to active or even minor storm levels.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 023, basierend auf 18 Stationen.

Solarindizes für den 20 Jan 2022

Wolf-Zahl Catania	075
10cm Solarflux	099
AK Chambon La Forêt	005
AK Wingst	004
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	058 - Basierend auf 26 Stationen

Zusammenfassung auffälliger Ereignisse

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

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