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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jan 30 1230 UTC

SIDC Forecast

Brillamenti solari

C-class flares expected, (probability >=50%)

Geomagnetism

Minor storm expected (A>=30 or K=5)

Protoni solari

Quiet

	10cm flux	Ap
30 Jan 2019	070	011
31 Jan 2019	069	022
01 Feb 2019	069	007

Bulletin

NOAA AR 2733 produced three C-class flares in the past 24 hours, the strongest one was a C5.2 flare peaking at 06:11 UT. This AR is rotating over the west limb and no other AR is visible, low solar activity is thus expected, although isolated C-class flares remain possible.

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 280 km/s with interplanetary magnetic fields of 2 nT. Geomagnetic conditions have been quiet. The fast solar wind associated with a negative polarity equatorial coronal hole is expected to arrive to the Earth within 24 hours, causing disturbed conditions (most likely up to K = 5).

Today's estimated international sunspot number (ISN): 000, based on 11 stations.

Solar indices for 29 Jan 2019

Wolf number Catania	015
10cm solar flux	073
AK Chambon La Forêt	003
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	014 - Based on 26 stations

Noticeable events summary

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

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