Välja antud: 2018 May 11 1230 UTC
Quiet conditions (<50% probability of C-class flares)
Quiet (A<20 and K<4)
Quiet
10cm flux | Ap | |
---|---|---|
11 May 2018 | 070 | 009 |
12 May 2018 | 070 | 003 |
13 May 2018 | 069 | 003 |
Solar activity was at very low levels. Small and inactive region NOAA 2709 (Catania 81) remained the only visible sunspot region on the solar disk. 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 remain at very low levels.
Earth remained under the influence of the high speed stream (HSS) from an elongated negative polarity equatorial coronal hole (CH). Solar wind speed decreased from about 570 km/s to values near 460 km/s by the end of the period (DSCOVR). Bz varied between -5 and +2 nT, with a negative stretch during the 03-09UT interval and Bz dipping to -5.5 nT. The interplanetary magnetic field was mostly directed towards the Sun. Geomagnetic activity ranged from quiet to active levels.
Quiet to unsettled geomagnetic conditions are expected in response to Earth's gradual exit from the CH HSS. There remains a small chance on an isolated active interval.
Today's estimated international sunspot number (ISN): 011, based on 21 stations.
Wolf number Catania | 011 |
10cm solar flux | 070 |
AK Chambon La Forêt | 018 |
AK Wingst | 014 |
Estimated Ap | 014 |
Estimated international sunspot number | 012 - Based on 29 stations |
Day | Begin | Max | Lõpp | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types | |
---|---|---|---|---|---|---|---|---|---|---|
Puuduvad |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
Kõik ajad UTC-s
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