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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Nov 21 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Protoni solari

Quiet

	10cm flux	Ap
21 Nov 2016	076	005
22 Nov 2016	076	011
23 Nov 2016	076	014

Bulletin

Solar activity has been very quiet, no C-class flares in past 24 h. There are two visible active regions on the solar disk with alpha magnetic field configuration, NOAA AR 2610 is rotating over the west limb. Solar activity is expected to remain low.

Proton levels are low and there were no Earth directed CMEs in past 24 h.

Solar wind speed is at 350 km/s with interplanetary magnetic field intensity of 4 nT. Geomagnetic conditions have been quiet. There is an equatorial coronal hole that crossed the central meridian yesterday, its solar wind will affect the Earth in about 48 h. The southern extension of the northern polar coronal hole may affect the Earth within 24 h, causing up to minor storm conditions (with possible isolated major storm periods).

Today's estimated international sunspot number (ISN): 000, based on 06 stations.

Solar indices for 20 Nov 2016

Wolf number Catania	///
10cm solar flux	076
AK Chambon La Forêt	008
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	007 - Based on 21 stations

Noticeable events summary

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

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