Het archief bekijken van vrijdag 21 april 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Apr 21 1230 UTC

SIDC Prognose

Zonnevlammen

C-class flares expected, (probability >=50%)

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
21 Apr 2017	081	017
22 Apr 2017	080	007
23 Apr 2017	078	007

Bulletin

No C-class flares in past 24 h, they remain possible in the next 24 h. The eastern part of NOAA AR 2651 has been numbered as NOAA AR 2652, with alpha magnetic field configuration.

No Earth directed Coronal Mass Ejections (CMEs) have been detected (but there are no coronagraph images available at the moment of writing). Solar protons have remained at background levels over the past 24 hours.

The Earth is under the fading influence of a high speed stream, with solar wind speeds around 500 km/s and interplanetary magnetic fields of 4 nT. Geomagnetic conditions ranged from K=3 to K=4 and Kp between 3 and 5 in the past 24 h. Mostly unsettled geomagnetic conditions are expected in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 041, gebaseerd op 19 stations.

Zon indexen voor 20 Apr 2017

Wolfgetal Catania	033
10cm zonneflux	081
AK Chambon La Forêt	023
AK Wingst	025
Geschatte Ap	028
Geschat internationaal zonnevlekkengetal	029 - Gebaseerd op 30 stations

Overzicht opvallende gebeurtenissen

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

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