Het archief bekijken van dinsdag 19 januari 2016

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2016 Jan 19 1231 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
19 Jan 2016	100	012
20 Jan 2016	099	006
21 Jan 2016	098	014

Bulletin

Solar flaring activity remained below C-class level. The currently visible sunspot groups are small and inactive. No earth-directed coronal mass ejections (CME) were observed.

Mostly quiet flaring conditions are expected, with only a small chance on an isolated C-class flare. A shock was observed in the solar wind speed on 18 January at 20:55UT with an abrupt increase from just below 300 km/s to 370 km/s, likely marking the arrival at Earth of the faint 14/15 January CME. Since then, solar wind speed has been mostly varying between 350 and 400 km/s. Bz oscillated between -11 and +13 nT as observed by ACE. Some more pronounced negative episodes, with values up to -10 nT, were recorded during the 21-03UT and 06-07UT intervals and again around 09:00UT. Active geomagnetic conditions were recorded during the 00-03UT interval, the remainder of the period was quiet to unsettled. A southern polar coronal hole (CH) extension at -25 to -30 degrees latitude is transiting the Central Meridian (CM).

Quiet to unsettled geomagnetic conditions are expected, with an active episode possible from the waning effects of the passing CME on 19 January and from the CH high speed stream on 20-21 January.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 067, gebaseerd op 14 stations.

Zon indexen voor 18 Jan 2016

Wolfgetal Catania	///
10cm zonneflux	100
AK Chambon La Forêt	///
AK Wingst	004
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	048 - Gebaseerd op 21 stations

Overzicht opvallende gebeurtenissen

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

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