Het archief bekijken van woensdag 28 juni 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Jun 28 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
28 Jun 2017	073	005
29 Jun 2017	072	008
30 Jun 2017	073	006

Bulletin

Solar activity was at very low levels during the period. NOAA 2664 is decaying and lost most sunspots of its northwestern portion. The region produced two low-level B-class flares. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Quiet flaring conditions are expected, with a tiny chance on an isolated C-class flare.

Solar wind speed declined slowly from about 470 to 450 km/s over the period. Bz fluctuated mostly between -2 and +3 nT. The interplanetary magnetic field was mostly directed away from the Sun.

The geomagnetic field was at quiet levels, and is expected to remain so. The particle stream from a small equatorial coronal hole may briefly enhance geomagnetic conditions on 29 or 30 June, with a small chance on an active episode.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 018, gebaseerd op 15 stations.

Zon indexen voor 27 Jun 2017

Wolfgetal Catania	020
10cm zonneflux	074
AK Chambon La Forêt	008
AK Wingst	006
Geschatte Ap	005
Geschat internationaal zonnevlekkengetal	020 - Gebaseerd op 26 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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