Affichage des archives de mardi, 26 mars 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Mar 26 1304 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 Mar 2019	071	010
27 Mar 2019	071	013
28 Mar 2019	070	008

Bulletin

Solar activity is low with only few B-class flares reported during last 24 hours. Since there are presently no active regions observed on the visible side of the solar disc, we expect that even number of B-class flares will decrease in the coming hours. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The solar wind speed is presently about 350 km/s and the interplanetary magnetic field magnitude is 7 nT. The fast solar wind associated with the negative polarity equatorial coronal hole (seemingly connected to the southern polar coronal hole), which reached central meridian yesterday afternoon, is expected at the Earth in the morning of March 29. The geomagnetic conditions are presently quiet and we expect quiet to unsettled conditions in the coming hours. The arrival of the fast solar wind, associated with the negative polarity equatorial coronal hole that is expected later today, might induce unsettled to possibly but not very probably, active geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 26 stations.

Indices solaires pour 25 Mar 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 33 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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