Het archief bekijken van zondag 18 november 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Nov 18 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
18 Nov 2018	073	005
19 Nov 2018	073	007
20 Nov 2018	073	004

Bulletin

There were no flares on the visible solar disc of the Sun in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 15%.

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.

In the past 24 hours, solar wind speed near Earth as registered by DSCOVR varied between about 275 and 340 km/s, with current values around 330 km/s. The Interplanetary Magnetic Field (IMF) was predominantly directed towards the Sun and has increased from about 4 to 7.5 nT since 04:45 UT on November 18. This may be the first sign of the arrival of a solar wind stream from a weak, negative polarity, equatorial coronal hole. Bz was never below -5 nT.

Quiet geomagnetic conditions (K Dourbes between 0 and 1; NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to unsettled conditions (K Dourbes < 4) are expected on November 18, 19 and 20, with a chance for active intervals due to the possible arrival of a solar wind stream from a weak, negative polarity, equatorial coronal hole.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 015, gebaseerd op 16 stations.

Zon indexen voor 17 Nov 2018

Wolfgetal Catania	///
10cm zonneflux	073
AK Chambon La Forêt	003
AK Wingst	001
Geschatte Ap	001
Geschat internationaal zonnevlekkengetal	016 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

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