Het archief bekijken van zondag 3 december 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Dec 03 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Moderate (ISES: Major) magstorm expected (A>=50 or K=6)

Proton Flux monitor

Quiet

	10cm flux	Ap
03 Dec 2017	071	004
04 Dec 2017	070	054
05 Dec 2017	070	045

Bulletin

Solar activity was at very low levels. The Sun is spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Quiet flaring conditions are expected.

ACE data indicated solar wind speed decreased further from initial values near 400 km/s to about 350 km/s by the end of the period. Bz varied between +3 nT and -4 nT. The interplanetary magnetic field was mostly directed towards the Sun. The extension of a positive northern polar CH is transiting the central meridian.

The geomagnetic field was quiet to unsettled levels throughout the period, and is expected to remain so until the arrival of the high speed stream from the northern polar coronal hole (CH) extension and its associated preceding co-rotating interaction region. Based on observations from the previous solar rotation and from STEREO-A, their influence may start affecting the earth environment late on 03 December or on 04 December, with minor to moderate geomagnetic storming possible.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 09 stations.

Zon indexen voor 02 Dec 2017

Wolfgetal Catania	///
10cm zonneflux	072
AK Chambon La Forêt	006
AK Wingst	003
Geschatte Ap	003
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 13 stations

Overzicht opvallende gebeurtenissen

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

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