Viewing archive of Wednesday, 31 January 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jan 31 1230 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
31 Jan 2018	070	014
01 Feb 2018	072	010
02 Feb 2018	074	007

Bulletin

Solar activity was low, no C-class flares in past 24 h. There is one new active region that emerged in the eastern hemisphere, it has beta magnetic field configuration and is not expected to produce significant flares in the coming hours.

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

Solar wind speed is at 375 km/s with interplanetary magnetic field magnitude of 7 nT. Geomagnetic conditions have been quiet. Isolated active periods are possible today, 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): 012, based on 05 stations.

Solar indices for 30 Jan 2018

Wolf number Catania	011
10cm solar flux	069
AK Chambon La Forêt	004
AK Wingst	003
Estimated Ap	003
Estimated international sunspot number	000 - Based on 25 stations

Noticeable events summary

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

All times in UTC

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