Affichage des archives de jeudi, 15 juin 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Jun 15 1231 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
15 Jun 2017	075	006
16 Jun 2017	075	015
17 Jun 2017	076	008

Bulletin

Catania reports two sunspot groups on the visible side of the solar disc, group 32 (NOAA AR 2662) and group 33 (not numbered by NOAA). Only reported flare in the last 24 hours was B1.9 flare which originated from the Catania sunspot group 33 (peaked at 19:07 UT on June 14). All the observed CMEs, during the last 24 hours, were narrow and will not arrive to the Earth.

The Earth is presently inside the slow solar wind with the speed of about 440 km/s, and the interplanetary magnetic field magnitude is 4 nT. Two large coronal holes, one on the north solar hemisphere and one on the south solar hemisphere, have reached central meridian yesterday evening. The associated fast solar wind is expected to arrive at the Earth early in the morning of June 18. The fast solar wind associated with the large equatorial coronal hole which has reached the central meridian in the morning of June 12, is expected to arrive at the Earth early morning of June 16. The geomagnetic conditions are presently quiet, we expect unsettled to active conditions due to arrival of the fast solar wind starting from June 16.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 031, sur la base de 25 stations.

Indices solaires pour 14 Jun 2017

Nombre de Wolf, observé par Catania	011
Flux solaire à 10 cm	074
AK Chambon La Forêt	013
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	012 - Basé sur 37 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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