Het archief bekijken van woensdag 19 december 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Dec 19 1231 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
19 Dec 2018	070	007
20 Dec 2018	070	008
21 Dec 2018	070	004

Bulletin

The Sun is spotless and did not produce any B flares or brighter in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at only 2%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

The solar wind speed near Earth as registered by DSCOVR gradually increased from about 400 to 520 km/s in the past 24 hours (current values around 490 km/s), under the influence of a solar wind stream associated with an isolated negative polarity coronal hole. The Interplanetary Magnetic Field (IMF) was predominantly directed towards the Sun and varied between about 1 and 9 nT. Bz was never below -6 nT. Solar wind speed is expected to stay elevated on December 19 and the first half of December 20.

Quiet to unsettled geomagnetic conditions (K Dourbes between 1 and 3; NOAA Kp between 1 and 3) were registered in the past 24 hours. There is a chance for active intervals (K Dourbes = 4) on December 19 and the first half of December 20. Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected in the second half of December 20 and on December 21.

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

Zon indexen voor 18 Dec 2018

Wolfgetal Catania	000
10cm zonneflux	070
AK Chambon La Forêt	010
AK Wingst	008
Geschatte Ap	007
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 16 stations

Overzicht opvallende gebeurtenissen

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

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