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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2024 Jun 05 1231 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
05 Jun 2024	195	006
06 Jun 2024	190	007
07 Jun 2024	190	007

Solar Active Regions and flaring

Solar flaring activity was moderate over the past 24 hours. The largest flare was a M3.4-flare, with peak time 08:56 UTC on June 05, from NOAA AR 3697 (beta-gamma-delta). There are currently 12 numbered active regions on the visible disk. NOAA AR 3697 is the most complex AR (beta-gamma-delta) and responsible for the majority of the flaring activity . The solar flaring activity is expected to be at moderate levels over the coming day with C-class flares expected and M-class flares likely and a chance of X-class flares.

Espulsioni di massa coronale

A Coronal Mass Ejection (CME) to the south west first seen in the SOHO/LASCO-C2 at 5:12 UTC on June 04 and is associated with an on disk signature of an eruption of AR 3703 near the central meridian at around 04:54 UTC. This CME is quite narrow, but will be further analysed to determine if there is an Earth directed component.

Fori coronali

A north-south elongated equatorial positive polarity coronal hole crossed the central meridian late June 04. A possible arrival of high- speed stream from this coronal hole may impact the Earth from June 08.

Vento solare

The solar wind at the Earth was slow, with speeds slowly rising up to 500 km/s and interplanetary magnetic field around 5 nT and Bz reaching minimum value of -5nT. Slow solar wind conditions are expected in the next 24 hours.

Geomagnetism

Geomagnetic conditions were quiet to unsettled both globally and locally (NOAA Kp 2, Local K Bel 3). Geomagnetic conditions are expected to remain quiet to unsettled in the next 24h.

Proton flux levels

Over the past 24 hours, the greater than 10 MeV GOES proton flux remained below the 10 pfu threshold and is expected to remain so over the next day. There is a slight chance that the proton flux may increase in case of strong flaring from NOAA AR 3697.

Electron fluxes at geostationary orbit

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

Today's estimated international sunspot number (ISN): 182, based on 22 stations.

Solar indices for 04 Jun 2024

Wolf number Catania	///
10cm solar flux	192
AK Chambon La Forêt	009
AK Wingst	008
Estimated Ap	008
Estimated international sunspot number	213 - Based on 22 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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