Het archief bekijken van donderdag 30 november 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Nov 30 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Active conditions expected (A>=20 or K=4)

Proton Flux monitor

Quiet

	10cm flux	Ap
30 Nov 2017	072	012
01 Dec 2017	071	008
02 Dec 2017	070	005

Bulletin

Solar activity was at very low levels. Decaying sunspot region NOAA 2689 was quiet and is approaching the NW limb. It has developed a filament in its spotless trailing section. The 40 degrees long filament is rounding the SW limb quietly. 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, with a slight chance on an isolated C-class flare.

Solar wind speed values around 400 km/s were recorded until about 19UT, when the wind stream associated with the southern polar coronal hole (CH) extension arrived and gradually drove the speed to values near 510 km/s around 09UT. Bz oscillated between +7 nT and -9 nT. The interplanetary magnetic field was mostly directed towards the Sun. Solar wind parameters did not show any obvious sign of the 25 November CME which has most likely missed the Earth.

The geomagnetic field was quiet to unsettled throughout the period, with Kp at active levels during the 03-06UT interval. Mostly quiet to unsettled conditions are expected, with a possibility on another active episode.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 011, gebaseerd op 09 stations.

Zon indexen voor 29 Nov 2017

Wolfgetal Catania	///
10cm zonneflux	073
AK Chambon La Forêt	015
AK Wingst	005
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	014 - Gebaseerd op 20 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

<< Keer terug naar de dagelijkse overview pagina