Het archief bekijken van donderdag 19 april 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Apr 19 1231 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
19 Apr 2018	071	007
20 Apr 2018	073	016
21 Apr 2018	072	007

Bulletin

During last 24 hours only few low B-class were reported. All flaring activity originated from the active region which is rotating from the behind of the East solar limb. This active region might be the source of B-class and isolated C-class flares in the coming hours. The coronagraph images do not show signatures of a possibly Earth directed CME. The solar protons remain at the background level.

The solar wind speed is about 280 km/s and the interplanetary magnetic field magnitude is rather low with the value of about 2 nT. The increase of the solar wind speed, associated with equatorial coronal hole which reached central meridian on April 16 is expected later today, or tomorrow morning. The geomagnetic conditions are presently quiet. We expect quiet to unsettled conditions later today and possibly active geomagnetic conditions tomorrow.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 007, gebaseerd op 27 stations.

Zon indexen voor 18 Apr 2018

Wolfgetal Catania	///
10cm zonneflux	071
AK Chambon La Forêt	010
AK Wingst	006
Geschatte Ap	006
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

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