Affichage des archives de lundi, 16 février 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Feb 16 1229 UTC

Prévisions SIDC

Éruptions solaires

Eruptive (C-class flares expected, probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
16 Feb 2015	120	006
17 Feb 2015	125	007
18 Feb 2015	130	007

Bulletin

The solar activity during the past 24 hours was low. The background of the X-ray flux is at the B-level for almost a week now. The active regions (AR) NOAA 2282, 2284 and 2285 were relatively stable and did not produce any significant flares. A new -still to be numbered- region is rounding the East limb (N15) and is a candidate to produce some C-flaring. No Earth-directed CMEs were observed. Nominal solar wind conditions are observed with a low solar wind speed near 350 km/s. The interplanetary magnetic field (IMF) magnitude ranges between 5 and 10 nT with a fluctuating, but mainly positive Bz component. A sector boundary crossing from negative to positive occurred near 9h30 UT 16 February, accompanied by a small jump (from 6 to 10 nT) in the IMF magnitude. Quiet solar wind conditions are expected to persist. Geomagnetic conditions are quiet to unsettled, both at the local level (at Dourbes) and global level (estimated NOAA Kp) and are expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 035, sur la base de 12 stations.

Indices solaires pour 15 Feb 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	120
AK Chambon La Forêt	010
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	046 - Basé sur 19 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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