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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Sep 13 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
13 Sep 2020	069	003
14 Sep 2020	070	003
15 Sep 2020	070	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 and is expected to remain so. The greater than 2 MeV electron flux exceeded the 1000 pfu alert threshold, with a maximum of 1467 pfu at 16:10UT. The electron flux is expected to be at nominal levels, with a small chance to reach moderate levels.

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

Solar wind speed varied between 310 and 350 km/s (DSCOVR). Bz varied between -5 and +4 nT. The direction of the interplanetary magnetic field (phi angle) was mostly away from the Sun (positive sector).

Geomagnetic activity was at quiet levels and expected to remain so, an isolated unsettled interval not excluded.

Today's estimated international sunspot number (ISN): 000, based on 13 stations.

Solar indices for 12 Sep 2020

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	010
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

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