Affichage des archives de samedi, 1 juillet 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Jul 01 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
01 Jul 2017	072	009
02 Jul 2017	071	008
03 Jul 2017	070	023

Bulletin

Solar activity was at very low levels during the period. NOAA 2664 was quiet. No earth-directed CMEs were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

Quiet flaring conditions are expected.

Solar wind parameters were at nominal values until around 18:00UT, when a gradual intensification set in. Bz had a negative stretch around -6 nT from 02:30UT till 05:30UT, then oscillated between -9 and +8 nT (DSCOVR). Wind speed was steady around 340 km/s till 08UT, before gradually increasing to values near 400 km/s. The interplanetary magnetic field was mostly directed away from the Sun. The first of two small negative equatorial coronal holes (CH) has transited the central meridian.

The geomagnetic field was at quiet to unsettled levels, and is expected to remain so. A glancing blow from the 28 June CME is possible late on 2 or on 3 July, likely followed by the particle stream from the small negative CH. This may result in active geomagnetic conditions, with a chance on a minor storming episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 019, sur la base de 14 stations.

Indices solaires pour 30 Jun 2017

Nombre de Wolf, observé par Catania	011
Flux solaire à 10 cm	072
AK Chambon La Forêt	011
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	/// - Basé sur /// 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