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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2025 Nov 29 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
29 Nov 2025	157	010
30 Nov 2025	165	010
01 Dec 2025	170	008

Solaraktive Regionen und Flares

Solar flaring activity was high over the past 24 hours, with 3 M-class flares identified. SIDC Sunspot Group (SG) 709 (NOAA Active Region 4294, Beta magnetic configuration) emitted all the M-class and all but one of the C-class flaring activity of the past 24 hours, although it remains partially obscured by the eastern solar limb. The M-class flares of the past 24 hours were SIDC flares 6228 (an M5.9 on 28 Nov at 22:22 UTC), 6230 (an M1.6 on 29 Nov at 00:02), and 6232 (an M1.5 on 29 Nov at 04:20 UTC). SIDC SG 709 is expected to increase its activity in the next 24 hours as a larger portion of it will become visible from L1. M-class flares are expected and there is still a small chance of an X-class flare.

Koronaler Massenauswurf

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours.

Sonnenwind

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) continued to reflect the waning influence of a high-speed stream (HSS). The solar wind speed gradually decreased from about 680 km/s to 600 km/s. The interplanetary magnetic field (B) varied between 3 and 7 nT and its North- South component (Bz) fluctuated between -6 and 5 nT. The SW speed is expected to continue its slow decline and the magnetic field is expected continue at similar levels in the next 24 hours.

Geomagnetismus

The global geomagnetic conditions fluctuated between unsettled and active values (NOAA Kp 3- to 4) over the past 24 hours. During the same period the local conditions registered quiet and unsettled values (K BEL 2 to 3). A similar pattern is expected in the next 24 hours, both for the global and local conditions.

Protonenflusswerte

The greater than 10 MeV proton flux, as measured by the GOES-19 satellite, was at background levels over the past 24 hours and is likely to remain so in the next 24 hours. Nevertheless there is a small chance that a proton event, associated with SIDC SG 709, might occur during the next 24 hours.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux, as measured by GOES-19, was above the 1000 pfu threshold during the past 24 hours with a peak value of 15000 pfu on 29 Nov at 04:30 UTC. The electron flux is expected to feature a further increase over the next day. The 24-hour electron fluence was at moderate levels during the past 24 hours. It is expected to increase further in the next 24 hours and reach high levels.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 089, basierend auf 09 Stationen.

Solarindizes für den 28 Nov 2025

Wolf-Zahl Catania	108
10cm Solarflux	138
AK Chambon La Forêt	029
AK Wingst	021
Geschätzer Ap-Wert	024
Geschätzte internationale Sonnenfleckenzahl	085 - Basierend auf 17 Stationen

Zusammenfassung auffälliger Ereignisse

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

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