Het archief bekijken van zaterdag 2 december 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Dec 02 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
02 Dec 2017	070	002
03 Dec 2017	069	007
04 Dec 2017	069	034

Bulletin

Solar activity was at very low levels. Active region NOAA 2689 rotated over the NW limb and left the solar disk spotless. The region produced a B1 flare at 14:10UT. 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.

Solar wind speed decreased from initial values near 460 km/s to values around 410 km/s by the end of the period. Bz varied between +5 nT and -5 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 activity was at unsettled to quiet levels. Quiet geomagnetic conditions are expected to continue 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, the earth environment may be affected starting 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 05 stations.

Zon indexen voor 01 Dec 2017

Wolfgetal Catania	///
10cm zonneflux	070
AK Chambon La Forêt	011
AK Wingst	010
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 15 stations

Overzicht opvallende gebeurtenissen

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

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