Välja antud: 2017 Jun 27 1230 UTC
Quiet conditions (<50% probability of C-class flares)
Quiet (A<20 and K<4)
Quiet
10cm flux | Ap | |
---|---|---|
27 Jun 2017 | 074 | 009 |
28 Jun 2017 | 075 | 006 |
29 Jun 2017 | 075 | 010 |
Solar activity was at very low levels during the period. NOAA 2664 gained some sunspot area in its northwestern portion, but remained quiet. An active region is rotating over the east limb, but is currently still spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.
Quiet flaring conditions are expected, with a small chance on a C-class flare.
Earth is under the waning influence of a coronal hole wind stream. Solar wind speed peaked around 13:00UT with a brief spike of about 610 km/s (DSCOVR). The overall wind speed gradually declined from its initial 570 km/s to around 470 km/s at the end of the period. Bz fluctuated between -3 and +3 nT. The interplanetary magnetic field was mostly directed away from the Sun. A small positive equatorial coronal hole (CH) was at the central meridian on 25 June.
The geomagnetic field was at quiet to unsettled levels, and is expected to remain so. The particle stream from the small CH may briefly enhance geomagnetic conditions on 29 or 30 June, with a small chance on an active episode.
Today's estimated international sunspot number (ISN): 019, based on 16 stations.
Wolf number Catania | 042 |
10cm solar flux | 074 |
AK Chambon La Forêt | 013 |
AK Wingst | 010 |
Estimated Ap | 010 |
Estimated international sunspot number | 024 - Based on 34 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
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