Het archief bekijken van zondag 28 juni 2026

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2026 Jun 28 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
28 Jun 2026	160	007
29 Jun 2026	160	007
30 Jun 2026	158	016

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C7.4 flare (SIDC Flare 8035) peaking on June 27 at 21:02 UTC, which was produced by SIDC Sunspot Group 899 (NOAA Active Region 4475). A total of 6 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 886 (NOAA Active Region 4478) (Beta-gamma-delta) and SIDC Sunspot Group 899 (NOAA Active Region 4475) (beta gamma) are the most complex active regions and in charge of the majority of the C-class flaring of the past 24 hours. Solar flaring activity is expected to be moderate over the next 24 hours, with C-class flares expected and a M-class flares very likely.

Coronale massa uitstoten

The CME that was first seen in LASCO C2 from 21:15 UTC June 26 is mainly directed towards the south but still has a Earth directed component. The arrival of the associated ICME is expected for June 30.

Coronale gaten

A large mid-latitude to equatorial positive polarity coronal hole started crossing central meridian with the mid-latitude extension, and may enhance solar wind conditions around July 1.

Zonnewind

Solar wind conditions near Earth have returned to slow solar wind, with speeds around 450 km/s, magnetic field around 3nT and the minimum Bz reaching -2nT. Slow solar wind conditions are expected for the next 24h.

Geomagnetisme

Geomagnetic conditions were quite globally (Kp 2) and quite to unsettled locally (Kbel 3) over the past 24 hours. Quiet to unsettled conditions are expected for the next 24 hours.

Proton flux niveaus

The greater than 10 MeV proton flux, as measured by GOES-18, was below the 10 pfu threshold level over the past 24 hours and is expected to remain so for the next 24 hours.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux was above the 1000 pfu alert threshold for the last 24 hours, and is expected to remain above the threshold during the next 24 hours. The 24h electron fluence was at moderate levels and is expected to remain so for the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 150, gebaseerd op 19 stations.

Zon indexen voor 27 Jun 2026

Wolfgetal Catania	///
10cm zonneflux	188
AK Chambon La Forêt	010
AK Wingst	009
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	127 - Gebaseerd op 24 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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