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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Jun 22 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
22 Jun 2017	074	007
23 Jun 2017	075	008
24 Jun 2017	076	008

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected. AR 2664 (Mcintosh class:Hsx; Mag. type:Alpha) appears complex in HMI magnetogram observations and has shown some evidence of activity, producing several small narrow CMEs which may enhance activity levels in the coming days. There's a small centrally located filament channel which looks stable, and a small northern coronal hole located at high latitudes and central longitudes, which is unlikely to significantly affect the Earth system but may enhance solar wind speeds in several days. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares and a very low probability of M-class flares. The solar wind speed has fluctuated around 350 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 5 and 8 nT. The Bz component fluctuated around -5 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet.

Today's estimated international sunspot number (ISN): 024, based on 23 stations.

Solar indices for 21 Jun 2017

Wolf number Catania	042
10cm solar flux	074
AK Chambon La Forêt	011
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	037 - Based on 38 stations

Noticeable events summary

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

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