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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2021 Jun 07 1256 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
07 Jun 2021	079	011
08 Jun 2021	079	008
09 Jun 2021	078	007

Bulletin

During last 24 hours solar flaring activity was at the B-class level, with the source regions of the flares in the Catania sunspot groups 2 and 3 (NOAA ARs 2829 and 2830, respectively). We expect such a low level of flaring activity to continue in the coming hours. There were no Earth directed CMEs observed during last 24 hours and the proton flux levels remained at background values.

The greater than 2MeV electron flux was bellow the 1000 pfu threshold in the past 24 hours and is expected to remain so during the next 24 hours. The 24h electron fluence was at normal levels and it is expected to stay so in the coming 24 hours.

The solar wind speed is presently 370 km/s and the interplanetary magnetic field magnitude is about 8 nT. The in situ observations indicate possible arrival of the solar wind originating from the negative polarity coronal hole, seemingly the extension of the southern polar coronal hole. It will be more clear when longer interval of the in situ data becomes available. The geomagnetic conditions are presently quiet to unsettled and we expect them to stay so in the coming hours.

Today's estimated international sunspot number (ISN): 051, based on 24 stations.

Solar indices for 06 Jun 2021

Wolf number Catania	///
10cm solar flux	077
AK Chambon La Forêt	009
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	039 - Based on 24 stations

Noticeable events summary

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

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