Het archief bekijken van vrijdag 29 december 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Dec 29 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
29 Dec 2017	071	007
30 Dec 2017	072	007
31 Dec 2017	074	010

Bulletin

Solar activity was low, no C-class flares in past 24 h. There are no active regions visible on the solar disk. A CME was observed in LASCO-C2 starting at 23:12 UT on 28 December, directed towards the south east and associated with a B8.3 flare (peak 22:29 UT), behind the east limb. This CME is backsided and will not affect the Earth. No C-class flares expected (although this region behind the limb may change the situation).

Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed.

Solar wind speed is at 400 km/s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions have been quiet, and expected to remain so. There is a small positive coronal hole located at 30 degrees northern latitude which may affect the Earth in 48h, but its effect should be minimal.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 14 stations.

Zon indexen voor 28 Dec 2017

Wolfgetal Catania	///
10cm zonneflux	071
AK Chambon La Forêt	010
AK Wingst	006
Geschatte Ap	005
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

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