Visualizzazione archivio di sabato, 13 gennaio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Jan 13 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

	10cm flux	Ap
13 Jan 2018	070	011
14 Jan 2018	069	008
15 Jan 2018	068	007

Bulletin

There were no C-class and even no B-class flares reported during last 24 hours. We do not expect any solar flaring activity in the coming hours. Coronagraph images do not show signatures of the Earth directed CME, and the solar protons remained at the background level.

Solar wind speed is presently about 320 km/s and the interplanetary magnetic field magnitude is about 5 nT. The arrival of the fast solar wind associated with the coronal hole which reached central meridian in the morning of January 09 is possible in the coming hours. The geomagnetic conditions are presently quiet to unsettled and we can expect them to stay so, with the possibility of isolated intervals of active geomagnetic conditions due to the influence of expected arrival of the fast solar wind.

Today's estimated international sunspot number (ISN): 000, based on 05 stations.

Solar indices for 12 Jan 2018

Wolf number Catania	012
10cm solar flux	071
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	000 - Based on 11 stations

Noticeable events summary

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

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