Affichage des archives de samedi, 28 janvier 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Jan 28 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
28 Jan 2017	080	010
29 Jan 2017	079	007
30 Jan 2017	078	012

Bulletin

Solar activity was very low, NOAA 2629 producing the sole B-class flare of the period. A potentially active region is near the northeast limb. 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 a C-class event.

Earth remained under the influence of the coronal hole's high speed stream. Solar wind speed varied between 580 and 530 km/s, with Bz fluctuating between -4 and +4 nT. The interplanetary magnetic field was mostly directed away from the Sun. A negative coronal hole is at the central meridian (CM) and may start influencing the earth environment around 31 January, probably preceded by a sector boundary crossing (SBC) around 30 January.

The geomagnetic field was at quiet to active levels and is expected to evolve to quiet to unsettled levels, an active episode not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 028, sur la base de 17 stations.

Indices solaires pour 27 Jan 2017

Nombre de Wolf, observé par Catania	033
Flux solaire à 10 cm	080
AK Chambon La Forêt	020
AK Wingst	021
Ap estimé	022
Nombre international de taches solaires estimé	027 - Basé sur 22 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

<< Aller à l'aperçu quotidien