Het archief bekijken van woensdag 2 juli 2025

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2025 Jul 02 1232 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
02 Jul 2025	126	024
03 Jul 2025	124	031
04 Jul 2025	122	024

Zonnevlekkengebieden en zonnevlammen

Solar flaring activity over the past 24 hours was low, with few C-class flares recorded. The largest flare was a C1.1 flare, peaking at 11:29 UTC on July 02, associated with SIDC Sunspot Group 513 (NOAA Active Region 4132; magnetic type alpha). There are currently ten numbered active regions on the visible solar disk. SIDC Sunspot Group 537 (NOAA Active Region 4126; beta) is expected to rotate over the west limb in the coming hours. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a small chance for M-class flares.

Coronale massa uitstoten

No Earth-directed CMEs were observed in the available coronagraphic imagery over the past 24 hours.

Zonnewind

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) reflected a return to slow solar wind conditions. The solar wind speed decreased from about 530 km/s to around 380 km/s. The interplanetary magnetic field remained below 7 nT, and its southward component fluctuated between -3 nT and 3 nT. Solar wind conditions might become slightly elevated over the next days due to the possible arrival of an ICME associated with a partial halo CME (SIDC CME 523), observed lifting from the Sun on June 28, and the anticipated high-speed stream arrival from the recurrent negative polarity coronal hole (SIDC Coronal Hole 111).

Geomagnetisme

Geomagnetic conditions were quiet globally and quiet to unsettled locally, over Belgium (NOAA Kp: 1 to 2, K-Bel: 1 to 3). Geomagnetic conditions are expected to remain at quiet to unsettled levels, with a chance of increasing to active conditions and isolated minor or moderate storm periods on July 02-03, due to the possible arrival of an ICME associated with a partial halo CME (SIDC CME 523) observed lifting from the Sun on June 28, and the expected high-speed stream arrival from the recurrent negative polarity coronal hole (SIDC Coronal Hole 111).

Proton flux niveaus

The greater than 10 MeV GOES proton flux was below the 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, as measured by GOES-18 and GOES-19, exceeded the 1000 pfu threshold over the past 24 hours. The greater than 2 MeV electron flux may exceed this threshold again in the coming days. The 24-hour electron fluence was at moderate levels and is expected to remain at moderate levels over the next 24 hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 145, gebaseerd op 23 stations.

Zon indexen voor 01 Jul 2025

Wolfgetal Catania	182
10cm zonneflux	126
AK Chambon La Forêt	010
AK Wingst	009
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	154 - Gebaseerd op 30 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

<< Keer terug naar de dagelijkse overview pagina