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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Mar 08 1231 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
08 Mar 2017	072	007
09 Mar 2017	071	005
10 Mar 2017	071	012

Bulletin

Solar activity was very low over the last 24 hours. There are currently no sunspot regions on the visible solar hemisphere. No earth- directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Quiet flaring conditions are expected to continue.

Earth remained under the waning influence of the high speed stream (HSS) from the trans-equatorial extension from the negative southern polar coronal hole (CH). Solar wind speed declined from an initial range between 650 and 600 km/s to values between 520-560 km/s at the end of the period. Bz fluctuated between -5 nT and +5 nT. The interplanetary magnetic field was directed towards the Sun.

The geomagnetic field was at quiet to unsettled levels, and is expected to remain so. If the particle stream associated with the diffuse positive coronal hole arrives on 9-11 March, then an isolated active period is possible.

Today's estimated international sunspot number (ISN): 000, based on 11 stations.

Solar indices for 07 Mar 2017

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	022
AK Wingst	017
Estimated Ap	017
Estimated international sunspot number	000 - Based on 24 stations

Noticeable events summary

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

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