Affichage des archives de mardi, 22 janvier 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jan 22 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
22 Jan 2019	070	007
23 Jan 2019	071	015
24 Jan 2019	071	010

Bulletin

During last 24 hours there were no C-class flares reported. New and still not numbered active region, which started to emerged yesterday morning, became more complex and it was source of A-class flares and one B-class flare this morning. We expect such a low flaring activity to persist in the coming hours. Isolated low C-class flares are possible but not very probable. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The Earth is still inside the slow solar wind with the speed of about 310 km. The interplanetary magnetic field magnitude is presently about 4 nT. The geomagnetic conditions are quiet and we expect them to remain so in the coming hours. The unsettled to active geomagnetic conditions can be expected starting from the late evening today, due to expected arrival of the fast solar wind from the extended positive polarity equatorial coronal hole which reached central meridian in the morning of January 19.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 017, sur la base de 15 stations.

Indices solaires pour 21 Jan 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	006
AK Wingst	004
Ap estimé	002
Nombre international de taches solaires estimé	000 - Basé sur 18 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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