Affichage des archives de mercredi, 19 juillet 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Jul 19 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
19 Jul 2017	075	005
20 Jul 2017	073	016
21 Jul 2017	072	016

Bulletin

As NOAA active region 2665 was disappearing behind the West limb it produced a final C2.8 flare peaking at 00:06UT. There are currently no spotted regions on disk and chances for C flares are very low. No Earth directed CMEs have been observed in coronagraph data. Proton flux levels are at background values and expected to remain so.

Solar wind has meanwhile declined to speeds of around 440 km/s. The large values of yesterday appear to have been observation errors. Total magnetic field is at low background values of around 2nT. Some perturbations in the solar wind conditions may occur over the next days, due to sector boundary crossings and the possible influence of the extension of the northern polar coronal hole. Geomagnetic conditions were quiet (local K Dourbes and NOAA Kp 0-2). Geomagnetic conditions are expected to become quiet to unsettled with an isolated active period possible as some minor perturbations in the solar wind could occur over the next days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 27 stations.

Indices solaires pour 18 Jul 2017

Nombre de Wolf, observé par Catania	012
Flux solaire à 10 cm	078
AK Chambon La Forêt	008
AK Wingst	008
Ap estimé	007
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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