Affichage des archives de lundi, 23 janvier 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Jan 23 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
23 Jan 2017	086	002
24 Jan 2017	084	002
25 Jan 2017	084	001

Bulletin

Solar activity was very low during the period, with no C-class flares or higher reported. The currently visible sunspot regions are decaying. NOAA 2628 has a stable leading spot but a decaying middle portion. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Mostly quiet flaring conditions are expected, with a small chance on an isolated C-class event.

Solar wind speed declined from about 510 to 440 km/s, with Bz mostly fluctuating between -2 nT and +3 nT. The interplanetary magnetic field was directed away from the Sun. A small positive equatorial coronal hole (CH) started its transit of the central meridian.

The geomagnetic field was at unsettled to quiet levels and is expected to remain so. Starting 27 or 28 January, the arrival of the CH's particle stream may affect the earth environment.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 060, sur la base de 10 stations.

Indices solaires pour 22 Jan 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	087
AK Chambon La Forêt	011
AK Wingst	010
Ap estimé	010
Nombre international de taches solaires estimé	070 - Basé sur 23 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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