Two halo coronal mass ejection (CME) have been observed in LASCO/C2 chronograph imagery. The first was a full halo CME first detected from 19:00 UTC June 01 in LASCO/C2 data. The CME is asymmetric and mostly directed to the east and is related to the X1.0 flare with peak time 18:36 UTC. A successive narrower partial halo CME directed to the south east can be seen from 20:00 UTC in LASCO/C2 data, associated with the M7.3 flare with peak time 19:39 UTC. Preliminary analysis suggests that these CMEs will have an Earth directed component and analysis is ongoing to determine the CMEs direction of propagation and estimate arrival time and will be reported in the daily bulletin.

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2024-06-01T19:00:07.822 | 2.0 | 108 | 214 | 743 | 203 | 262 | 1157 t0: onset time, earliest indication of liftoff dt0: duration of liftoff (hours) pa: principal angle, counterclockwise from North (degrees) da: angular width of the CME (degrees), v: median velocity (km/s) dv: variation (1 sigma) of velocity over the width of the CME mindv: lowest velocity detected within the CME maxdv: highest velocity detected within the CME

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. 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. 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. 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. 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.

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. 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.