Перегляд архіву четвер, 18 жовтня 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2018 Oct 18 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

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

Сонячні протони

Quiet

	10cm flux	Ap
18 Oct 2018	070	005
19 Oct 2018	070	014
20 Oct 2018	070	011

Bulletin

There is one active region visible on the solar disk, NOAA 2725 with alpha magnetic field configuration. 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 415 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 on October 19-20, causing active geomagnetic conditions. 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 22 stations.

Solar indices for 17 Oct 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	011 - Based on 20 stations

Noticeable events summary

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

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