Het archief bekijken van zaterdag 28 januari 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Jan 28 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
28 Jan 2017	080	010
29 Jan 2017	079	007
30 Jan 2017	078	012

Bulletin

Solar activity was very low, NOAA 2629 producing the sole B-class flare of the period. A potentially active region is near the northeast limb. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Mostly quiet flaring conditions are expected, with a small chance on a C-class event.

Earth remained under the influence of the coronal hole's high speed stream. Solar wind speed varied between 580 and 530 km/s, with Bz fluctuating between -4 and +4 nT. The interplanetary magnetic field was mostly directed away from the Sun. A negative coronal hole is at the central meridian (CM) and may start influencing the earth environment around 31 January, probably preceded by a sector boundary crossing (SBC) around 30 January.

The geomagnetic field was at quiet to active levels and is expected to evolve to quiet to unsettled levels, an active episode not excluded.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 028, gebaseerd op 17 stations.

Zon indexen voor 27 Jan 2017

Wolfgetal Catania	033
10cm zonneflux	080
AK Chambon La Forêt	020
AK Wingst	021
Geschatte Ap	022
Geschat internationaal zonnevlekkengetal	027 - Gebaseerd op 22 stations

Overzicht opvallende gebeurtenissen

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

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