Het archief bekijken van dinsdag 17 april 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Apr 17 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
17 Apr 2018	069	006
18 Apr 2018	069	006
19 Apr 2018	068	009

Bulletin

During last 24 hours three active regions emerged on the visible side of the Sun, but two of them already decayed. There are presently two numbered active regions observed, NOAA ARs 2704 and 2705, and both of them are spotless. The flaring activity is low and there were no C-class or even B-class flares reported. We expect such a low activity to persist in the coming hours. No Earth directed CMEs were observed in the coronagraph images, and the solar protons remained at the background level.

The Earth is still inside the slow solar wind with the speed of about 290 km/s and the interplanetary magnetic field magnitude is 3 nT. The increase of the solar wind speed, associated with equatorial coronal hole which reached central meridian on April 16 might be expected on April 19.The geomagnetic conditions are presently quiet and we expect them to stay so in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 011, gebaseerd op 20 stations.

Zon indexen voor 16 Apr 2018

Wolfgetal Catania	012
10cm zonneflux	069
AK Chambon La Forêt	006
AK Wingst	002
Geschatte Ap	002
Geschat internationaal zonnevlekkengetal	007 - Gebaseerd op 32 stations

Overzicht opvallende gebeurtenissen

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

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