Issued: 2018 May 22 1304 UTC
Quiet conditions (<50% probability of C-class flares)
Active conditions expected (A>=20 or K=4)
Quiet
10cm flux | Ap | |
---|---|---|
22 May 2018 | 070 | 005 |
23 May 2018 | 071 | 014 |
24 May 2018 | 072 | 008 |
Solar activity was at low levels. Catania sunspot group 82 (NOAA AR 2710) produced one B2.8 flare peaking at 05:07 UT today. No earth- directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. Solar activity is expected to be at low levels with some probability for C-class flares. The solar wind speed remained below 400 km/s over the past 24 hrs. Interplanetary magnetic field magnitude remained below 5 nT till 11:00 UT today (recorded by ACE). Later interplanetray magnetic filed magnitude gradually increased till 9 nT, simutaniously Bz component decreased from -2 nT till -5 nT. Solar wind parameters variations may increase from now due to the expected influence of the recurrent positive polarity northern polar coronal hole. Solar wind speeds may increase till about 500 km/s later today or tomorrow (accodring to STEREO data). Geomagnetic conditions have been quiet over the past 24 hrs. Unsettled geomagnetic conditions can be expected today and tomorrow. Isolated episodes of active conditions are also not excluded.
Today's estimated international sunspot number (ISN): 013, based on 23 stations.
Wolf number Catania | 013 |
10cm solar flux | 070 |
AK Chambon La Forêt | 007 |
AK Wingst | 003 |
Estimated Ap | 003 |
Estimated international sunspot number | 011 - Based on 28 stations |
Day | Begin | Max | End | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types | |
---|---|---|---|---|---|---|---|---|---|---|
None |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
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