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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Jun 19 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
19 Jun 2017	074	030
20 Jun 2017	075	012
21 Jun 2017	076	012

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. The largest flare was a B3.0 class flare. Active Region (AR) 2663 (Mcintosh class:Dso; Mag. type:Beta) has been most active, producing several B-class flares, however the region is now approaching the West solar limb. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar activity is expected to remain low over the next 24 hours with a small probability of C-class flares and a low probability of M-class flares, but this will diminish as AR 2663 passes over the limb. An AR currently approaching the East solar limb has shown some evidence of activity and should be on disk in the next couple of days and may also enhance activity levels. The solar wind speed has decreased from around 610 to 520 km/s over the past 24 hours. The total magnetic field strength has remained around 5 nT. The Bz component fluctuated around 0 nT, ranging between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 1-2 (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): 028, based on 27 stations.

Solar indices for 18 Jun 2017

Wolf number Catania	///
10cm solar flux	075
AK Chambon La Forêt	013
AK Wingst	014
Estimated Ap	014
Estimated international sunspot number	030 - Based on 29 stations

Noticeable events summary

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

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