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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2019 Dec 08 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
08 Dec 2019	071	004
09 Dec 2019	070	005
10 Dec 2019	071	001

Bulletin

Solar activity was at very low levels. The visible solar disk was spotless. No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

The solar wind speed fluctuated around 360 km/s (ACE). The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector). Bz varied between -4 and +4 nT.

Geomagnetic activity was quiet, with the Kp index (NOAA) and the local k index (Dourbes) recording values of between 0-1. Quiet conditions are expected with possible unsettled conditions on Dec 8-9, due to the influence from the patchy, negative polarity coronal hole that traversed the central meridian on Dec 5.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 07 Dec 2019

Wolf number Catania	///
10cm solar flux	///
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
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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