Het archief bekijken van donderdag 9 oktober 2025

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2025 Oct 09 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
09 Oct 2025	117	010
10 Oct 2025	110	007
11 Oct 2025	105	004

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity was low over the past 24 hours, with only two C1 flares identified. They were emitted by SIDC Sunspot Group 661 (NOAA Active Region [AR] 4241, Beta magnetic configuration) and SIDC Sunspot Group 663 (NOAA AR 4242, Beta magnetic configuration). A limited number of low-intensity C-class flares is expected in the next 24 hours.

Coronale massa uitstoten

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

Zonnewind

The Solar Wind (SW) conditions appear to be affected by a glancing blow that arrived in the first half of 9 Oct. It is probably associated with the SIDC CME 577 that was launched on 5 Oct at 03:25 UTC. The SW speed ranged from 320 to 430 km/s, while the interplanetary magnetic field (B) varied between 4 and 15 nT, and its North-South component (Bz) fluctuated between -6 and 13 nT. The SW speed is expected to remain at the same level and the magnetic field is expected to slowly drop in the next 24 hours.

Geomagnetisme

During the last 24 hours geomagnetic conditions were both globally and locally quiet to unsettled (NOAA Kp 1- to 3- and K BEL 1 to 3). They are expected to remain at the same level, both globally and locally, for the next 24 hours.

Proton flux niveaus

The greater than 10 MeV proton flux, as measured by the GOES-19 satellite, was at background levels over the past 24 hours and is likely to remain so in the next 24 hours.

Elektronenfluxen in geostationaire baan

Over the last 24 hours the greater than 2 MeV electron flux, as measured by GOES 19, was above the 1000 pfu alert threshold until 8 Oct 22:00 UTC, with a peak value at 5000 pfu. In the next 24 hours it is expected to remain below the 1000 pfu alert threshold. The 24-hour electron fluence was at moderate levels during the past 24 hours. It is expected to drop further and reach normal levels in the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 060, gebaseerd op 13 stations.

Zon indexen voor 08 Oct 2025

Wolfgetal Catania	060
10cm zonneflux	120
AK Chambon La Forêt	009
AK Wingst	010
Geschatte Ap	011
Geschat internationaal zonnevlekkengetal	073 - Gebaseerd op 19 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

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