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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2025 Jul 02 1232 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

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

Sluneční protony

Quiet

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

Slunečně aktivní oblasti a vzplanutí

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.

Vyhazování koronální hmoty

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

Solární bouře

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).

Geomagnetismus

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).

Úrovně protonového toku

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.

Elektronové toky na geostacionární oběžné dráze

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.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 145, na základě 23 stanic.

Solární indexy za 01 Jul 2025

Wolfovo číslo Catania	182
10cm sluneční tok	126
AK Chambon La Forêt	010
AK Wingst	009
Odhadovaný Ap	008
Odhadovaný mezinárodní počet slunečních skvrn	154 - Na základě 30 stanic

Souhrn významných událostí

Poskytuje Centrum pro analýzu dat o solárních vlivech© - SIDC - Zpracováno SpaceWeatherLive

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