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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Dec 10 1259 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
10 Dec 2019	070	008
11 Dec 2019	070	008
12 Dec 2019	069	006

Bulletin

The solar flaring activity is still very low (no reported flares) and we expect it will remain so in the coming hours. Rather narrow CME was seen in the LASCO C2 field of view at about 19:06 on Decembe 09, propagating with the speed of about 200 km/s. During last 24 hours there were no Earth directed CMEs and the solar protons remained at the background level.

The solar wind speed is presently about 440 km/s and the interplanetary magnetic field magnitude is 7 nT. The in situ data show arrival of the magnetic structure in the solar wind, starting from early this morning. Presently it is unclear if we see expected arrival of the fast solar wind or the ICME of presently not clear source on the Sun. More will be reported later when more in situ data will be available. The geomagnetic conditions are presently quiet. We are expecting quiet to unsettled geomagnetic conditions with possibly isolated intervals of unsettled conditions.

Today's estimated international sunspot number (ISN): 000, based on 22 stations.

Solar indices for 09 Dec 2019

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	007
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	000 - Based on 16 stations

Noticeable events summary

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

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