:Issued: 2023 Jun 04 1231 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 30604 SIDC SOLAR BULLETIN 04 Jun 2023, 1230UT SIDC FORECAST SOLAR FLARES : M-class flares expected (probability >=50%) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 04 Jun 2023 10CM FLUX: 165 / AP: 007 PREDICTIONS FOR 05 Jun 2023 10CM FLUX: 165 / AP: 007 PREDICTIONS FOR 06 Jun 2023 10CM FLUX: 165 / AP: 007 Solar Active Regions and flaring: There are seven visible active regions on the solar disk. Only C-class flaring has been observed in the last 24 hours, from NOAA ARs 3319, 3323 and a new active region rotating into view over the east limb. The strongest flare was a C8.9 from NOAA AR 3323, peaking at 03:49 UTC. In the next 24 hours, more C-class flares will be observed and M-class flares are possible. Coronal mass ejections: No Earth-directed coronal mass ejections (CMEs) were detected in the past 24 hours. Solar wind: In the last 24 hours the solar wind speed has been low, it is now around 320 km/s with an interplanetary magnetic field of about 7nT. Similar conditions can be expected for the next 24 hours. Geomagnetism: The geomagnetic conditions over the past 24 hours have been quiet to moderate (K_Belgium and Kp up to 3). 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 GEO: 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 ISN : 134, BASED ON 12 STATIONS. SOLAR INDICES FOR 03 Jun 2023 WOLF NUMBER CATANIA : /// 10CM SOLAR FLUX : 165 AK CHAMBON LA FORET : 009 AK WINGST : 004 ESTIMATED AP : 003 ESTIMATED ISN : 136, BASED ON 28 STATIONS. NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES NONE END BT #--------------------------------------------------------------------# # Solar Influences Data analysis Center - RWC Belgium # # Royal Observatory of Belgium # # # # Website http://www.sidc.be. # # E-mail sidc-support@oma.be # # To unsubscribe http://www.sidc.be/registration/unsub.php # # # # Legal notices: # # - Intellectual Property Rights: # # http://www.astro.oma.be/common/internet/en/data-policy-en.pdf # # - Liability Disclaimer: # # http://www.astro.oma.be/common/internet/en/disclaimer-en.pdf # # - Use and processing of your personal information: # # http://www.astro.oma.be/common/internet/en/privacy-policy-en.pdf # #--------------------------------------------------------------------#