Перегляд архіву вівторок, 30 січня 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2018 Jan 30 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
30 Jan 2018	068	007
31 Jan 2018	070	015
01 Feb 2018	070	007

Bulletin

Solar activity was low, no C-class flares in past 24 h. The situation is not expected to change, as there are no active regions on disk.

Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed.

Solar wind speed is at 340 km/s with interplanetary magnetic field magnitude of 3 nT. Geomagnetic conditions have been quiet to unsettled and are expected to remain so. Isolated active periods remain possible in the next 24 h, due to the probable arrival of moderately fast solar wind streams associated with a negative polarity diffuse equatorial coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 20 stations.

Solar indices for 29 Jan 2018

Wolf number Catania	000
10cm solar flux	068
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	002
Estimated international sunspot number	000 - Based on 19 stations

Noticeable events summary

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

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