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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2025 Aug 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 Aug 2025	232	007
30 Aug 2025	234	007
31 Aug 2025	234	007

Solaraktive Regionen und Flares

A total of 16 numbered sunspot groups were identified on the disk over the past 24 hours. Solar flaring activity was high over the past 24 hours, with 5 M-class flares identified. The largest flare was a M1.5 flare (SIDC Flare 5260) peaking on August 28 at 20:40 UTC, which was produced by SIDC Sunspot Group 621 (NOAA Active Region 4203). Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares likely.

Koronaler Massenauswurf

No Earth-directed Coronal Mass Ejections (CMEs) have been observed in the last 24 hours.

Koronale Löcher

A narrow equatorial negative polarity coronal hole crossed central meridian on 28 August, its associated high speed stream may be expected at the Earth on 1 September.

Sonnenwind

The Earth is inside slow solar wind with speeds around 400 km/s and interplanetary magnetic fields of about 7 nT (directed towards the Sun, negative polarity). Similar conditions can be expected for the coming 24 hours.

Geomagnetismus

Geomagnetic conditions have been quiet to unsettled (Kp between 0 and 3 and K_Bel 0 and 2). Similar conditions are expected for the next 24 hours.

Protonenflusswerte

The greater than 10 MeV proton flux has been below the 10 pfu threshold. It is expected to remain at nominal levels.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux as measured by GOES 18 and 19 remained below the 1000 pfu alert threshold, similar conditions expected for the next 24 hours. The 24 h electron fluence was at normal levels and is expected to remain so.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 211, basierend auf 17 Stationen.

Solarindizes für den 28 Aug 2025

Wolf-Zahl Catania	204
10cm Solarflux	232
AK Chambon La Forêt	013
AK Wingst	007
Geschätzer Ap-Wert	008
Geschätzte internationale Sonnenfleckenzahl	201 - Basierend auf 15 Stationen

Zusammenfassung auffälliger Ereignisse

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

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