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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2026 Apr 06 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
06 Apr 2026	119	007
07 Apr 2026	116	007
08 Apr 2026	114	007

Solaraktive Regionen und Flares

Solar flaring activity was low over the past 24 hours, with several C-class flares recorded. The largest flare was a C2.8 flare (SIDC Flare 7371), peaking at 23:47 UTC on April 05, associated with SIDC Sunspot Group 838 (NOAA Active Region 4409; magnetic type beta-gamma). There are currently seven numbered active regions on the visible solar disk. SIDC Sunspot Group 838 is the largest and most magnetically complex region on the disk and produced most of the flaring activity over the past 24 hours. SIDC Sunspot Group 835 (NOAA Active Region 4404; magnetic type beta) is approaching the west limb but remained quiet. The remaining active regions are relatively simple (magnetic type alpha or beta) and did not produce any significant flaring activity. Solar flaring activity is expected to remain low over the next 24 hours, with C-class flares very likely and a chance of M-class flares.

Koronaler Massenauswurf

No Earth-directed CMEs have been detected in the available coronagraph imagery over the past 24 hours.

Sonnenwind

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) reflected the waning influence of the high-speed stream from SIDC Coronal Hole 149 (negative polarity). The solar wind speed ranged between 500 km/s and 570 km/s. The interplanetary magnetic field remained weak, below 5 nT. A gradual transition to slow solar wind conditions is expected over the next days.

Geomagnetismus

Geomagnetic conditions were quiet to unsettled both globally and locally over Belgium (Kp 1 to 3 and K-Bel 1 to 3). Mostly quiet conditions are expected over the next 24 hours.

Protonenflusswerte

The greater than 10 MeV proton flux, as measured by GOES-18, was at near-background levels over the past 24 hours. The greater than 10 MeV GOES proton flux is expected to remain below the 10 pfu threshold over the next 24 hours.

Elektronenflüsse im geostationären Orbit

The greater than 2 MeV electron flux, as measured by GOES-19, exceeded the 1000 pfu alert threshold over the past 24 hours, with a peak value of 11760 pfu. It is expected to remain above the alert threshold over the next 24 hours. The 24-hour electron fluence was at moderate levels during the past 24 hours and is expected to remain at these levels over the next 24 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 105, basierend auf 22 Stationen.

Solarindizes für den 05 Apr 2026

Wolf-Zahl Catania	///
10cm Solarflux	118
AK Chambon La Forêt	015
AK Wingst	014
Geschätzer Ap-Wert	014
Geschätzte internationale Sonnenfleckenzahl	101 - Basierend auf 18 Stationen

Zusammenfassung auffälliger Ereignisse

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

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