Het archief bekijken van donderdag 17 oktober 2019

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2019 Oct 17 1230 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
17 Oct 2019	067	006
18 Oct 2019	067	007
19 Oct 2019	067	017

Bulletin

The Sun is spotless and did not produce any flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at only 1%.

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.

Solar wind speed near Earth as registered by ACE varied between about 370 and 460 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was predominantly oriented away from the Sun and its magnitude varied between about 0 and 7 nT. Bz was never below -5 nT for extended periods. Enhanced solar wind conditions are expected from the second half of October 19 onwards, with the expected arrival of a high speed stream associated with a recurrent, negative polarity, narrow coronal hole that spans from the South pole to the equator.

Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on October 17 and 18 and the first half of October 19. Active to minor storm intervals (K Dourbes = 4-5) are possible in the second half of October 19, due to the expected arrival of a high speed stream associated with a recurrent, negative polarity, narrow coronal hole that spans from the South pole to the equator.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 23 stations.

Zon indexen voor 16 Oct 2019

Wolfgetal Catania	///
10cm zonneflux	066
AK Chambon La Forêt	010
AK Wingst	008
Geschatte Ap	007
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 23 stations

Overzicht opvallende gebeurtenissen

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

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