Affichage des archives de vendredi, 20 juillet 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jul 20 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
20 Jul 2018	070	010
21 Jul 2018	069	008
22 Jul 2018	069	006

Bulletin

The visible side of the Sun remains to be spotless and consequently, there is no flaring activity reported during last 24 hours. We expect such a low flaring activity to persist in the coming hours. No Earth directed CMEs were observed, and the solar protons remained at the background level.

The solar wind speed is presently about 450 km/s and the interplanetary magnetic field magnitude is about 5 nT. It is presently unclear if the small increase of the solar wind speed (up to 480 km/s was reached at 09 UT this morning), and interplanetary magnetic field (up to 7 nT), are due to a structure in the slow solar wind or a solar wind flow associated with patchy equatorial coronal hole (reached central meridian on July 16). The geomagnetic conditions are presently unsettled to quiet and we expect such a geomagnetic conditions to persist in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 24 stations.

Indices solaires pour 19 Jul 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 31 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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