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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Oct 19 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
19 Oct 2018	070	008
20 Oct 2018	070	011
21 Oct 2018	070	007

Bulletin

There are no active regions visible on the solar disk. No C-class flares in past 24 h. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 320 km/s with interplanetary magnetic fields of 3 nT. Geomagnetic conditions have been quiet. The fast solar wind associated with the low latitudinal extension of the northern polar coronal hole (positive polarity) may arrive to the Earth within 24 h, causing active geomagnetic conditions. Nevertheless, due to its latitude, the high speed stream may pass north of the Earth and leave it unaffected (quiet conditions expected in that case).

Today's estimated international sunspot number (ISN): 000, based on 21 stations.

Solar indices for 18 Oct 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	003
AK Wingst	001
Estimated Ap	001
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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