Välja antud: 2017 Oct 04 1230 UTC
Quiet conditions (<50% probability of C-class flares)
Quiet (A<20 and K<4)
Quiet
10cm flux | Ap | |
---|---|---|
04 Oct 2017 | 086 | 009 |
05 Oct 2017 | 085 | 015 |
06 Oct 2017 | 085 | 012 |
Solar activity was at very low levels. NOAA 2683 (Catania 57) gained some small opposite polarity sunspots south of the main spot, and was the source of 3 low-level B-class flares. NOAA 2682 (Catania 56) was quiet, showing a long filament to the east and north of the main spot. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.
Quiet flaring conditions are expected, with a small chance on a C-class flare.
A sector boundary crossing (SBC) was observed in the solar wind during the first half of 03 October, during which the interplanetary magnetic field changed its direction from "away" to "towards" the Sun. During the last 24 hours, solar wind speed declined gradually from 410 to 370 km/s (DSCOVR). Bz fluctuated between -2 and +4 nT.
The geomagnetic field was mostly quiet, with Kp at unsettled levels during the 03-06UT interval. Quiet to unsettled geomagnetic conditions are expected to continue. The arrival of the particle stream associated with a small negative equatorial coronal hole is expected late on 04 or on 05 October, and may increase the likelihood on an active geomagnetic episode.
Today's estimated international sunspot number (ISN): 027, based on 12 stations.
Wolf number Catania | /// |
10cm solar flux | 086 |
AK Chambon La Forêt | 009 |
AK Wingst | 007 |
Estimated Ap | 007 |
Estimated international sunspot number | 028 - Based on 25 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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