Het archief bekijken van vrijdag 15 december 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Dec 15 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Minor storm expected (A>=30 or K=5)

Proton Flux monitor

Quiet

	10cm flux	Ap
15 Dec 2017	073	011
16 Dec 2017	074	029
17 Dec 2017	074	019

Bulletin

The Sun produced no C flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 5%. 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, solar wind speed measured by DSCOVR further decreased from about 420 to about 350 km/s. The Interplanetary Magnetic Field (IMF) was directed away from the Sun and its magnitude ranged between about 2 and 6 nT. Bz was never below -5 nT. A high speed stream from a recurrent positive equatorial coronal hole is expected to arrive in the second half of December 15 or early on December 16. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 1) were registered in the past 24 hours. Active to minor storm conditions (K Dourbes 4 or 5) are possible on December 15, 16 and 17, with a slight chance for moderate geomagnetic storm intervals (K Dourbes = 6), due to the expected arrival of a high speed stream from a recurrent positive equatorial coronal hole.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 14 stations.

Zon indexen voor 14 Dec 2017

Wolfgetal Catania	000
10cm zonneflux	072
AK Chambon La Forêt	005
AK Wingst	005
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 20 stations

Overzicht opvallende gebeurtenissen

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

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