Het archief bekijken van dinsdag 13 december 2016

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2016 Dec 13 1234 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
13 Dec 2016	071	006
14 Dec 2016	070	008
15 Dec 2016	069	015

Bulletin

Solar activity continues to be low without C-class flares reported since December 10. The only active region presently observed on the visible side of the solar disc, NOAA 2617, has approached to the west solar limb. We expect solar activity to stay at the same low level, and although the isolated C-class flares are possible they are not very probable. Newly available observations confirm that the CME, first seen in the SOHO LASCO C2 field of view at 06:48 UT on December 11, was a back side event and will therefore not arrive at the Earth. No Earth directed CMEs were observed in the last 24 hours.

The solar wind speed remains to be about 530 km/s, and the interplanetary magnetic field magnitude is presently about 4 nT. The fast solar wind associated with the small equatorial coronal hole which reached the central meridian yesterday morning is expected to arrive at the Earth in the midday of December 15. It might be closely followed in arrival time by the fast flow from the small coronal hole (between S08 and S12) which reached the central meridian early this morning. The geomagnetic conditions are presently quiet and we expect them to stay so in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 014, gebaseerd op 08 stations.

Zon indexen voor 12 Dec 2016

Wolfgetal Catania	013
10cm zonneflux	071
AK Chambon La Forêt	008
AK Wingst	005
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	013 - Gebaseerd op 16 stations

Overzicht opvallende gebeurtenissen

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

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