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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2023 Dec 24 1258 UTC

Vorhersage des SIDC

Sonneneruptionen

M-class flares expected (probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
24 Dec 2023	173	013
25 Dec 2023	172	016
26 Dec 2023	172	007

Solaraktive Regionen und Flares

The solar flaring activity was at moderate level during the last 24 hours, with several C-class flares and a M-class flare. The strongest flare was GOES M2.9 flare from NOAA AR 3529 which peaked at 11:18 UTC on Dec 24. During the flare, the source region (AR 3529) of the flare had beta configuration of its photospheric magnetic field. The solar flaring activity is expected to be at low to moderate levels over the next 24 hours with few C-class flares, possibly M-class flares and a low chance for isolated X-class flares.

Koronaler Massenauswurf

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph observations during last 24 hours.

Sonnenwind

Over the past 24 hours, the solar wind parameters were slightly disturbed with a strong fluctuations of North-South component (Bz). Bz component ranged between -7 and 7 nT. The interplanetary magnetic field ranged from from 1 nT to 9 nT. The solar wind speed increased from 330 km/s to 440 km/s. The fast solar wind originating from the negative polarity coronal hole (CH), possibly connected to the southern polar CH spanning from 30 - 55 S, which reached the central meridian in the morning of Dec 18 may impact the Earth in the coming hours.

Geomagnetismus

Geomagnetic conditions were globally and locally at quiet to unsettled conditions (NOAA Kp 1 to 3) due to the slight disturbances in the solar wind conditions. Unsettled to active geomagnetic conditions are possible in the coming hours due to the expected arrival of the fast solar wind originating from the negative polarity coronal hole (CH) which crossed the central meridian on Dec 20.

Protonenflusswerte

The greater than 10 MeV proton flux was below the threshold level over the past 24 hours and is expected to remain so for the next 24 hours.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux, as measured by the GOES-16 satellite, was below the threshold level over the past 24 hours and is expected to remain so in the coming 24 hours. The 24h electron fluence is presently at normal level and is expected to remain so for the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 116, basierend auf 06 Stationen.

Solarindizes für den 23 Dec 2023

Wolf-Zahl Catania	///
10cm Solarflux	174
AK Chambon La Forêt	012
AK Wingst	006
Geschätzer Ap-Wert	005
Geschätzte internationale Sonnenfleckenzahl	146 - Basierend auf 11 Stationen

Zusammenfassung auffälliger Ereignisse

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

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