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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jun 16 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
16 Jun 2019	067	004
17 Jun 2019	067	021
18 Jun 2019	067	018

Bulletin

Solar activity was at very low levels. The Sun has been spotless for 18 consecutive days (SILSO). No coronal mass ejections (CME) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A diffuse and fragmented negative polarity equatorial coronal hole (CH) has nearly finished its transit of the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed undulated between 330 and 390 km/s (DSCOVR). Bz varied between -3 and +3 nT. The interplanetary magnetic field was mostly directed away from the Sun (positive sector). Quiet geomagnetic conditions were observed.

Mostly quiet geomagnetic conditions are expected until the arrival of the wind streams associated with the negative polarity CHs, currently expected for 17 June. Active geomagnetic conditions are possible from then onwards, with a chance on a minor storming episode.

Today's estimated international sunspot number (ISN): 000, based on 23 stations.

Solar indices for 15 Jun 2019

Wolf number Catania	///
10cm solar flux	067
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	004
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

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