Het archief bekijken van vrijdag 28 april 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Apr 28 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
28 Apr 2017	079	008
29 Apr 2017	078	008
30 Apr 2017	078	008

Bulletin

The solar activity is extremely low without even B-class flares reported in the last 24 hours. We expect the low level of activity to continue in the coming hours, however B-class flares are still possible. The CME first clearly seen in the SOHO LASCO C2 field of view at about 07:36 UT on April 28 (after a long data gap) seem to be rather narrow with the bulk of the CME mass directed northward of the Sun-Earth line. From the currently available observations it does not seem very probable that this CME will arrive at the Earth. More will be reported when data become available. No Earth directed CMEs have been observed in the past 24 hours. The Earth is presently inside the slow solar wind with the speed of 400 km/s, and the interplanetary magnetic field magnitude amounts about 5 nT. The geomagnetic conditions are presently quiet and we expect them to stay so in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 036, gebaseerd op 16 stations.

Zon indexen voor 27 Apr 2017

Wolfgetal Catania	///
10cm zonneflux	078
AK Chambon La Forêt	009
AK Wingst	008
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	027 - Gebaseerd op 28 stations

Overzicht opvallende gebeurtenissen

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

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