Viewing archive of Wednesday, 23 September 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Sep 23 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

	10cm flux	Ap
23 Sep 2020	072	007
24 Sep 2020	074	007
25 Sep 2020	076	014

Bulletin

There is one sunspot visible on the Sun (reported this morning by the Royal Observatory of Belgium). X-ray flux is still at the A level, only minor B-flares could be expected.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed near Earth as registered by DSCOVR varied between about 320 and 380 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was oriented mostly away from the Sun (positive) with a magnitude between 3 nT and 9 nT.

Quiet conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 2) were registered in the past 24 hours. The solar wind coming from the low latitude extension of the northern polar coronal hole may affect the Earth in about 48 hours, causing an increase into active geomagnetic levels (K = 4).

Today's estimated international sunspot number (ISN): 010, based on 19 stations.

Solar indices for 22 Sep 2020

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	008
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

All times in UTC

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