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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Oct 10 1230 UTC

SIDC Forecast

Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
10 Oct 2017	072	001
11 Oct 2017	070	010
12 Oct 2017	068	007

Bulletin

Solar activity was at very low levels. There is no sunspots on the visible side of solar disk. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. Integral proton flux for protons with energies above 10 MeV remained at backgroundlevel. Quiet flaring conditions are expected. Solar wind speed gradually decreased from 375 till 310 km/s (DSCOVR). Bz fluctuated between -3 and +3.5 nT, being mostly positive before 05UT. The extension of a positive polar CH started its transit of the Central Meridian early on 07 October and may influence the earth environment around 11 October. The geomagnetic field was very quiet both at planetary (NOAA) and local (Dourbes) levels and is expected to remain so today. Unsettled conditions can be expected from tomorrow (11 October), with a chance of an isolated active intervals.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 09 Oct 2017

Wolf number Catania	000
10cm solar flux	072
AK Chambon La Forêt	003
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	000 - Based on 31 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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