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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Jan 14 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
14 Jan 2018	071	012
15 Jan 2018	070	008
16 Jan 2018	069	006

Bulletin

There are presently no numbered sunspot regions on the visible side of the solar disk. There were no flares reported during last 24 hours and we do not expect any flaring activity in the coming hours. Coronagraph images do not show signatures of the Earth directed CMEs, and the solar protons remained at the background level. The Earth is presently inside the fast solar wind associated with the coronal hole which reached central meridian in the morning of January 09. The present values of the solar wind speed and the interplanetary magnetic field magnitude are 580 km/s and 5 nT, respectively. The maximum value of the wind speed during last 24 hours was about 610 km/s and the Bz component of the interplanetary magnetic field had minimum value of about -12 nT. The arrival of the fast solar wind induced disturbed geomagnetic conditions, NOAA reported Kp=5 early this morning and local station at Dourbes reported only K=3. Presently geomagnetic conditions are quiet to unsettled and although intervals of active conditions are still possible, we expect mostly continuation of the quite to unsettled conditions in the coming hours.

Today's estimated international sunspot number (ISN): 000, based on 12 stations.

Solar indices for 13 Jan 2018

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	023
AK Wingst	005
Estimated Ap	005
Estimated international sunspot number	000 - Based on 13 stations

Noticeable events summary

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

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