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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2023 Jun 03 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
03 Jun 2023	162	007
04 Jun 2023	160	007
05 Jun 2023	160	007

Solar Active Regions and flaring

There are ten visible active regions on the solar disk. Only C-class flaring has been observed in the last 24 hours, from NOAA ARs 3315, 3319, 3323, 3324, and 3326. The strongest flare was a C6.3 from NOAA AR 3324, peaking at 22:42 UTC on 2 June. More C-class flares will be observed and M-class flares are possible.

Espulsioni di massa coronale

No Earth-directed coronal mass ejections (CMEs) were detected in the past 24 hours.

Fori coronali

There are two positive polarity coronal holes, a small one close to the equator and another larger one in the south. The corresponding high speed streams seem to have missed the Earth.

Vento solare

In the last 24 hours the solar wind speed has decreased to 340 km/s and the interplanetary magnetic field to 3 nT, its polarity has turned positive (away from the Sun). Similar conditions can be expected for the next 24 hours. There are slight chances of still seeing fast solar winds from the two coronal holes, but their effect is not expected to be important.

Geomagnetism

The geomagnetic conditions over the past 24 hours have been quiet to moderate (K_Belgium and Kp up to 4). Similar conditions can be expected for the next 24 hours.

Proton flux levels

Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so in the next 24 hours.

Electron fluxes at geostationary orbit

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

Today's estimated international sunspot number (ISN): 135, based on 18 stations.

Solar indices for 02 Jun 2023

Wolf number Catania	///
10cm solar flux	162
AK Chambon La Forêt	008
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	136 - Based on 28 stations

Noticeable events summary

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

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