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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Sep 07 1230 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
07 Sep 2020	069	003
08 Sep 2020	069	003
09 Sep 2020	069	003

Bulletin

The Sun was spotless. Solar activity was at very low levels and is expected to remain so.

The greater than 10 MeV proton flux was at nominal levels. The greater than 2 MeV electron flux was above the 1000 pfu alert threshold for the entire period, reaching a maximum of 5373 pfu at 15:30UT. Electron flux and 24h-fluence are expected to remain at moderate levels.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind was at nominal levels. Solar wind speed varied between 340 and 400 km/s (DSCOVR). Bz was mostly negative, varying between -4 and +2 nT. The interplanetary magnetic field (phi angle) was predominantly directed away from the Sun (positive sector).

Geomagnetic activity was at quiet levels, with an unsettled episode recorded by Dourbes during the 21-24UT interval. Geomagnetic conditions are expected to be mostly quiet.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 06 Sep 2020

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	009
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	000 - Based on 31 stations

Noticeable events summary

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

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