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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Feb 07 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
07 Feb 2017	073	017
08 Feb 2017	075	019
09 Feb 2017	077	017

Bulletin

NOAA AR 2634 evolved into a beta magnetic field configuration and is the only visible active region on the solar disk. There have been no C-class flares in past 24 h. C-class flares are possible.

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

Geomagnetic conditions have reached K=4 overnight due to the longlasting effect of a fading high speed stream (HSS) with speeds between 550 and 600 km/s. Solar wind speed is now at 500 km/s with interplanetary magnetic fields of 4 nT. Another HSS from a small equatorial positive polarity coronal is expected to affect the Earth within 24 h. Geomagnetic conditions up to K = 5 can be expected.

Today's estimated international sunspot number (ISN): 012, based on 08 stations.

Solar indices for 06 Feb 2017

Wolf number Catania	///
10cm solar flux	073
AK Chambon La Forêt	022
AK Wingst	015
Estimated Ap	015
Estimated international sunspot number	012 - Based on 20 stations

Noticeable events summary

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

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