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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2022 Jun 24 1232 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
24 Jun 2022	120	008
25 Jun 2022	120	007
26 Jun 2022	120	007

Bulletin

The solar flaring activity was at low levels over the past 24 hours with only C-class flares from several sunspots groups visible on the disc seen from Earth. The larger flare was a C4.0-class flare from Catania sunspots group 53 (NOAA active region 3034) peaking at 11:20 UTC. We expect mostly C-class flares with a small chance of isolated M-class flares.

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux was below 1000 pfu alert threshold and it is expected to remain so during the next 24 hours. The electron fluence was at normal to moderate levels and is expected to remain normal to moderated levels in the next 24 hours.

The solar wind parameters in Earth environment were showing a return to slow solar wind-speed regime: the wind speed ranged between 410 km/s and 500. The interplanetary magnetic field magnitude showed values below 8 nT. The Bz component of the interplanetary magnetic field fluctuated between -7.0 nT and 7.2 nT. Two coronal holes (negative polarity) are currently visible on the disc near the central meridian at high latitudes. The high- speed streams coming from these two coronal holes may influence the solar wind conditions and contribute to its enhancement in the next 2 days.

The geomagnetic conditions were mostly quiet with short periods of unsettle conditions (NOAA Kp and local K-Belgium 1-3). The geomagnetic conditions are expected to remain mostly quiet in the next 24 hours.

Today's estimated international sunspot number (ISN): 068, based on 14 stations.

Solar indices for 23 Jun 2022

Wolf number Catania	071
10cm solar flux	121
AK Chambon La Forêt	016
AK Wingst	///
Estimated Ap	020
Estimated international sunspot number	073 - Based on 29 stations

Noticeable events summary

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

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