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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Dec 13 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
13 Dec 2019	070	005
14 Dec 2019	069	006
15 Dec 2019	069	005

Bulletin

Solar activity is still very low and there were no flares reported during last 24 hours. We expect such a low level of flaring activity to persist in the coming hours. During last 24 hours we observed few faint and rather narrow coronal mass ejections (CMEs) that, based on the presently available observations, do not seem to be earth-directed. The solar protons remained at the background level.

Earth is presently within the slow solar wind with speed of about 370 km/s and the interplanetary magnetic field magnitude is 2 nT. The solar wind originating from the narrow and extended equatorial coronal hole of negative polarity that reached central meridian in the evening of December 10, might arrive to the Earth late on December 14. The geomagnetic conditions are quiet and we expect them to stay so in the coming hours.

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

Solar indices for 12 Dec 2019

Wolf number Catania	000
10cm solar flux	071
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

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