Het archief bekijken van zondag 20 oktober 2019

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2019 Oct 20 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
20 Oct 2019	066	020
21 Oct 2019	066	021
22 Oct 2019	066	007

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 315 and 385 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 1 and 6 nT. Bz was never below -5 nT. Enhanced solar wind conditions are possible on October 20 and 21, 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 1 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Active to minor storm intervals (K Dourbes = 4-5) are possible on October 20 and 21, 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. A return to quiet to unsettled levels (K Dourbes < 4) is expected on October 22.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 10 stations.

Zon indexen voor 19 Oct 2019

Wolfgetal Catania	///
10cm zonneflux	066
AK Chambon La Forêt	008
AK Wingst	006
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 18 stations

Overzicht opvallende gebeurtenissen

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

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