Het archief bekijken van zaterdag 21 april 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Apr 21 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
21 Apr 2018	073	018
22 Apr 2018	073	010
23 Apr 2018	072	006

Bulletin

Solar flaring activity is rather low. Catania sunspot group 78 (NOAA AR 2706) was source of several B-class flares during last 24 hours. As Catania sunspot group 78 continues to have beta configuration of its photospheric magnetic field, we might expect B-class flares and possibly also isolated C-class flares in the coming hours. No Earth directed CMEs were observed in the coronagraph images. The solar protons continue to be at the background level.

Earth is presently inside the fast solar wind (speed of about 610 km/s) associated with the equatorial coronal hole. The interplanetary magnetic field magnitude is about 6nT. As the solar wind speed is rather high, together with the longer intervals of the Bz component of the IMF it might induce disturbed geomagnetic conditions in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 026, gebaseerd op 24 stations.

Zon indexen voor 20 Apr 2018

Wolfgetal Catania	015
10cm zonneflux	073
AK Chambon La Forêt	044
AK Wingst	040
Geschatte Ap	041
Geschat internationaal zonnevlekkengetal	016 - Gebaseerd op 36 stations

Overzicht opvallende gebeurtenissen

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

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