Het archief bekijken van zaterdag 28 maart 2026

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2026 Mar 28 1233 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 Mar 2026	156	006
29 Mar 2026	154	006
30 Mar 2026	152	004

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity was moderate over the past 24 hours, with an M1.3 (SIDC flare 7282), emitted on 28 Mar at 04:14 UTC. It is was associated with SIDC Sunspot Group (SG) 836 (NOAA Active Region [AR] 4405, Beta magnetic configuration). A small number of C-class flares was produced by SIDC SG 826 (NOAA AR 4400, Beta magnetic configuration), SIDC SG 830 (NOAA AR 4401, Beta-Gamma magnetic configuration), and SIDC SG 832 (NOAA AR 4403, Alpha magnetic configuration). Sporadic M-class flaring activity is likely in the next 24 hours, either from SIDC SG 836 or 830.

Coronale massa uitstoten

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

Zonnewind

The Solar Wind (SW) conditions of the past 24 hours resemble the slow SW regime with the exception of the unusually low density. The SW speed registered values between 350 and 450 km/s and the density remained below 2 particles/cm3. The interplanetary magnetic field (B) ranged between 2 and 5 nT, and its North-South component (Bz) varied from -5 nT to 2 nT. Slow SW conditions are expected to continue in the next 24 hours.

Geomagnetisme

The geomagnetic conditions of the past 24 hours were both globally at quiet to unsettled levels (NOAA Kp 1+ to 3+) and locally quiet to active (K BEL 1 to 3 with the exception of K BEL 4 on 28 Mar at 00:00-03:00 UTC). In the next 24 hours both the global and local conditions are expected to be up to unsettled levels.

Proton flux niveaus

The greater than 10 MeV proton flux, as measured by the GOES-18 satellite, was at nominal levels over the past 24 hours and is likely to remain so. However, there is a small chance of a proton even in the next 24 hours.

Elektronenfluxen in geostationaire baan

During the past 24 hours, the greater than 2 MeV electron flux as measured by GOES 19, peaked at 13000 pfu on 27 Mar at 15:15 UTC and then dropped to below the 1000 pfu threshold at 20:35 UTC. A further drop is expected in the next 24 hours. The electron fluence was at moderate levels in the past 24 hours and is expected to remain at moderate levels in the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 131, gebaseerd op 16 stations.

Zon indexen voor 27 Mar 2026

Wolfgetal Catania	170
10cm zonneflux	156
AK Chambon La Forêt	016
AK Wingst	008
Geschatte Ap	007
Geschat internationaal zonnevlekkengetal	140 - Gebaseerd op 27 stations

Overzicht opvallende gebeurtenissen

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

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