Het archief bekijken van vrijdag 4 oktober 2019

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2019 Oct 04 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
04 Oct 2019	068	014
05 Oct 2019	068	013
06 Oct 2019	068	007

Bulletin

Solar activity was at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed varied between mostly 420 and 360 km/s, ending the period near 380 km/s (ACE). On 4 October around 05:30UT, the Earth crossed a sector boundary (SBC), with the interplanetary magnetic field (phi angle) switching from a predominantly positive direction (away from the Sun) to a predominantly negative sector (towards the Sun). Bz varied between -3 and +3 nT until the SBC, when it briefly dipped to -10 nT (05:30UT), then gradually increasing to values around +8 nT by 08:00UT and remaining variable afterwards. Both Kp and K Dourbes recorded quiet to unsettled geomagnetic conditions.

Geomagnetic activity is expected to remain at quiet to unsettled levels with a small chance on an isolated active interval in response to the wind stream associated with the patchy negative polarity coronal hole.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 19 stations.

Zon indexen voor 03 Oct 2019

Wolfgetal Catania	///
10cm zonneflux	068
AK Chambon La Forêt	008
AK Wingst	005
Geschatte Ap	004
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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