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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2017 May 09 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
09 May 2017	070	008
10 May 2017	068	007
11 May 2017	067	008

Bulletin

There is only one sunspot group (with alpha configuration of its photospheric magnetic field), presently observed on the visible side of the solar disc. Accordingly, solar activity is extremely low and the last B-class flare was reported on May 06. We expect solar activity to stay on the same low level. Isolated B-class flares are still possible but not very probable. Coronagraph observations do not show any Earth directed CME observed in the past 24 hours. The Earth is still inside the slow solar wind with the speed of about 360 km/s and the interplanetary magnetic field magnitude is about 2nT. 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 25 stations.

Solar indices for 08 May 2017

Wolf number Catania	011
10cm solar flux	071
AK Chambon La Forêt	012
AK Wingst	006
Estimated Ap	007
Estimated international sunspot number	013 - Based on 23 stations

Noticeable events summary

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

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