Viewing archive of Monday, 9 October 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Oct 09 1246 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
09 Oct 2017	080	003
10 Oct 2017	079	008
11 Oct 2017	077	006

Bulletin

Solar activity was at very low levels. NOAA 2683 (Catania 57) had rotated over the west limb by the end of the period. It was the source of five B-class flares observed over the past 24 hours. The last B1.4 flare peaked at 03:24 UT today (09-Oct-2017). 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 background level. Mostly quiet flaring conditions are expected. Solar wind speed gradually decreased from 450 till 360 km/s (DSCOVR). Bz fluctuated between -2.5 and +5 nT, being mostly positive.The interplanetary magnetic field was directed towards the Sun. 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 10-11 October. The geomagnetic field was at quiet levels, both NOAA and local station at Dourbes ranged 0-2. Mostly quiet geomagnetic conditions are expected, with a chance on an isolated unsettled interval.

Today's estimated international sunspot number (ISN): 000, based on 20 stations.

Solar indices for 08 Oct 2017

Wolf number Catania	///
10cm solar flux	077
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	000 - Based on 21 stations

Noticeable events summary

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

All times in UTC

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