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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2025 Mar 12 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
12 Mar 2025	165	013
13 Mar 2025	170	014
14 Mar 2025	180	007

Solaraktive Regionen und Flares

Solar flaring activity was moderate over the past 24 hours, with 1 M-class flare identified. The largest flare was a M1.1 flare (SIDC Flare 3800) peaking on March 11 at 13:04 UTC, which was produced by SIDC Sunspot Group 431 (NOAA Active Region 4024). A total of 11 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 428 (NOAA Active Region 4019) is the most complex active region ( Beta-Delta).

Koronaler Massenauswurf

No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.

Sonnenwind

The solar wind at the Earth is slow, with speeds around 460 km/s and interplanetary magnetic field slightly increased from 6 to 12 nT with the Bz reaching a minimum value of -10 nT. In the next 24h, the solar wind speed may increase due to the influence of the high-speed streams associated with the coronal holes (which reached the central meridian in March 10).

Geomagnetismus

Geomagnetic conditions reached active levels (Kp 4- and K Bel 4) early on March 12. Geomagnetic conditions may reach again active levels late on March 12, due to a high-speed stream arrival.

Protonenflusswerte

The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux was above the 1000 pfu threshold on March 11 and is expected to remain so in the upcoming days. The 24h electron fluence was at nominal level and is expected to remain so in the next days.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 156, basierend auf 11 Stationen.

Solarindizes für den 11 Mar 2025

Wolf-Zahl Catania	///
10cm Solarflux	161
AK Chambon La Forêt	022
AK Wingst	009
Geschätzer Ap-Wert	011
Geschätzte internationale Sonnenfleckenzahl	141 - Basierend auf 14 Stationen

Zusammenfassung auffälliger Ereignisse

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

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