Affichage des archives de lundi, 26 février 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Feb 26 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
26 Feb 2018	069	008
27 Feb 2018	070	011
28 Feb 2018	071	006

Bulletin

There are presently no numbered sunspot regions on the visible side of the solar disk. Accordingly, solar activity is extremely low (last B-class flare was reported about a week ago). We expect such a low activity to persist in the coming days. Coronagraph images do not show signatures of the Earth directed CMEs, and the solar protons remained at the background level.

The solar wind speed is presently about 430 km/s and the interplanetary magnetic field magnitude is 5 nT. In the coming hours we might expect some increase of the solar wind speed, associated with the equatorial coronal hole (possibly connected to the southern polar coronal hole) which reached central meridian in the late evening of February 22. Rather small and patchy equatorial coronal hole reached central meridian this morning. The associated increase of the solar wind speed might be expected in the morning of March 02. The geomagnetic conditions are presently quiet and we expect quiet to unsettled geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 016, sur la base de 19 stations.

Indices solaires pour 25 Feb 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	011
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 26 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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