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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jun 10 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
10 Jun 2019	068	005
11 Jun 2019	068	009
12 Jun 2019	068	021

Bulletin

Solar activity was at very low levels. No coronal mass ejections (CME) were observed over the last 24 hours. Analysis of STEREO-A coronagraphic imagery indicates that the slow and narrow CME from the 7 June filament eruption was mainly directed south of the ecliptic, making a geo-effective impact rather unlikely. The greater than 10 MeV proton flux was at nominal values. An extension from the positive polarity northern polar coronal hole (CH) transited the central meridian on 8 June. This extension is better defined than during its previous rotation.

Solar wind speed declined from about 410 km/s to its current values near 340 km/s. Bz varied between -4 and +3 nT. The direction of the interplanetary magnetic field (phi angle) was mostly directed towards the Sun. Quiet geomagnetic conditions were observed, with unsettled levels reached at Dourbes during the 15-18UT and 06-09UT intervals.

Quiet to unsettled geomagnetic conditions are expected to continue until the arrival of the CH wind stream late on 11 or on 12 June. Active conditions are then possible.

Today's estimated international sunspot number (ISN): 000, based on 25 stations.

Solar indices for 09 Jun 2019

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	008
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	000 - Based on 24 stations

Noticeable events summary

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

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