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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Dec 03 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
03 Dec 2016	083	002
04 Dec 2016	082	003
05 Dec 2016	081	008

Bulletin

Decaying NOAA 2612 produced the only flare of the period, a B2.4 flare peaking at 18:22UT. NOAA 2615 was stable and quiet, remaining the most prominent sunspot region on the disk. Some minor coronal dimming was observed in EUV imagery near NOAA 2612 (around 14UT) and NOAA 2615 (around 19UT and 24UT), but no obvious CME seems to have been associated with it. 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 chance on an isolated C-class event.

Solar wind speed declined from about 370 to 310 km/s, with Bz fluctuating between -4 nT and +4 nT. The interplanetary magnetic field was mostly directed away from the Sun. Solar wind parameters are expected to remain at nominal values. The particle stream from a small positive coronal hole (CH; S15W32) may mildly affect the earth-environment late on 4 or on 5 December.

The geomagnetic field was at quiet levels and is expected to remain so. Unsettled conditions are possible on 4 or 5 December in response to the arrival of the CH's particle stream.

Today's estimated international sunspot number (ISN): 061, based on 14 stations.

Solar indices for 02 Dec 2016

Wolf number Catania	083
10cm solar flux	084
AK Chambon La Forêt	007
AK Wingst	005
Estimated Ap	003
Estimated international sunspot number	063 - Based on 23 stations

Noticeable events summary

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

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