Affichage des archives de samedi, 11 mars 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Mar 11 1231 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
11 Mar 2017	071	005
12 Mar 2017	071	005
13 Mar 2017	071	005

Bulletin

Solar activity was very low. The Sun was spotless. No earth- directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Quiet flaring conditions are expected to continue.

Solar wind speed declined from its initial 480 km/s to nominal levels near 380 km/s by 03UT. It then gradually rebounded to values near 420 km/s by 08UT, ending the period near 380 km/s. Bz fluctuated between -3 nT and +2 nT, being steady at +1 nT from 08UT onwards. The direction of the interplanetary magnetic field (phi angle) was variable. A narrow extension from the positive northern polar coronal hole (CH) has transited the central meridian (CM).

The geomagnetic field was at quiet to unsettled levels. Mostly quiet to unsettled conditions are expected, until the arrival of the particle stream from the polar CH extension expected for 13-14 March, which may result in active episodes.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 24 stations.

Indices solaires pour 10 Mar 2017

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	011
AK Wingst	010
Ap estimé	016
Nombre international de taches solaires estimé	000 - Basé sur 28 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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