An X1.4 flare was recorded, with peak time 08:48 UTC June 01, associated with NOAA AR 3697 in the south east of the solar disk. Coronagraph data will be analysed when it becomes available to determine if any associated CME is Earth directed. Further X-class flares remain possible.

A class X1.4 solar X-ray flare occurred on 2024/06/01 with peak time 08:48UT

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2024-05-29T14:48:07.412 | 5.0 | 144 | 360 | 801 | 745 | 113 | 1953 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 activity was high over the last 24 hours. The largest flare of the period was an X1.4 flare with peak time 08:48 UTC June 01 from NOAA AR 3697, the most complex region on the disk. This region also produced a X1.1 flare with peak time 22:03 UTC May 31. Two new active regions emerged, newly numbered NOAA AR 3699 and an as yet unnumbered region at S05W30, but both were quiet. NOAA AR 3691 continued to decay and produced C-class flaring activity. NOAA AR3698 also produced C-class flaring activity and grew slightly. The rest of the regions were quiet. The solar flaring activity is expected to be moderate over the next 24 hours with C-class flares expected, M-class flares likely and a chance for further X-class flares. No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery. Over the past 24 hours the greater than 10 MeV GOES proton flux was below the 10pfu threshold and is expected to remain so for the next day. There is a slight chance that the proton flux may increase due to strong flaring from NOAA AR 3697, but this is unlikely due to its current position. The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to remain below this threshold over the next days. The 24-hour electron fluence was at nominal levels. The electron fluence is expected remain at nominal levels over the next days.

Geomagnetic conditions were quiet to unsettled levels (NOAA Kp 2 and Local K Bel 3). Geomagnetic conditions are expected to be mostly at quiet to unsettled levels in the next 24 hours, however isolated active to minor storm conditions may be possible on June 01, due to the predicted glancing blow from the May 29 CME. The solar wind reflected slow solar wind conditions with speeds between 330 and 380 km/s. The interplanetary magnetic field was stable around 5nT, with a minimum Bz value of -5nT. A mildly enhanced solar wind speed and magnetic field may be possible in the next 24 hours, due to a glancing blow from the partial halo CME on May 29 and the weak influence from the small positive polarity coronal hole which crossed the central meridian on May 29.