Viewing archive of Friday, 11 September 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Sep 11 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
11 Sep 2020	069	001
12 Sep 2020	070	002
13 Sep 2020	070	002

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 expected to remain so. The greater than 2 MeV electron flux reached moderate levels, with a maximum of 3580 pfu at 19:50UT. The electron flux is expected to reach moderate levels again.

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

Solar wind speed was mostly between 280 and 310 km/s (DSCOVR). Bz varied between -4 and +5 nT. The direction of the interplanetary magnetic field (phi angle) was predominantly towards the Sun (negative sector).

Geomagnetic activity was at quiet levels and is expected to remain so.

Today's estimated international sunspot number (ISN): 000, based on 26 stations.

Solar indices for 10 Sep 2020

Wolf number Catania	000
10cm solar flux	069
AK Chambon La Forêt	003
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	000 - Based on 33 stations

Noticeable events summary

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

All times in UTC

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