Affichage des archives de mercredi, 2 mai 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 May 02 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
02 May 2018	067	006
03 May 2018	067	007
04 May 2018	067	007

Bulletin

Solar activity was very low with a single minor B flare from the plage region turning around the West limb. There are no spotted regions on disk and X ray flux is expected to remain at background levels.

No Earth directed CME's were observed in coronagraph data.

Solar proton flux levels were at background values and are expected to remain so.

An equatorial negative polarity coronal hole is starting to transit the central meridian this afternoon. It is expected to influence solar wind conditions from May 6 onwards.

Solar wind saw a further steady decline of the velocity to values of under 400 km/s since after midnight. Total magnetic field remained between 4.5 and 6.5 nT with a variable Bz. Nominal Solar wind conditions are expected over the next days, until May 6 when the influence of the equatorial coronal hole is expected to increase solar wind conditions.

Geomagnetic conditions were quiet (local K Dourbes 1-2 and NOAA Kp 0-2) and are expected to remain quiet until May 6 when the influence of the equatorial coronal hole is expected to raise geomagnetic conditions to active levels.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 18 stations.

Indices solaires pour 01 May 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	001
Nombre international de taches solaires estimé	000 - Basé sur 32 stations

Résumé des événements marquants

Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive

Toutes les heures sont indiquées en UTC

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