Affichage des archives de jeudi, 24 janvier 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jan 24 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
24 Jan 2019	073	016
25 Jan 2019	073	008
26 Jan 2019	072	006

Bulletin

There is presently only one sunspot group observed on the visible side of the Sun. NOAA AR 2733 still has beta configuration of its photospheric magnetic field and is occasionally producing low B-class flares. We expect low solar flaring activity to persist in the coming hours, with the low probability for an isolated C-class flare. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The Earth is presently inside the fast solar wind (originating from the equatorial coronal hole which reached central meridian in the morning of January 19) with the speed of about 600 km/s and the interplanetary magnetic field magnitude of 8 nT. Several intervals of longer negative value of the Bz component of the interplanetary magnetic field and the fast solar wind induced disturbed geomagnetic conditions. Around the midnight and early morning of January 24 local station at Dourbes and NOAA reported K=4 and Kp=4, respectively. As the solar wind speed is rather high, although the interplanetary magnetic field magnitude already significantly decreased, we still might expect unsettled to active geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 022, sur la base de 09 stations.

Indices solaires pour 23 Jan 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	025
AK Wingst	017
Ap estimé	016
Nombre international de taches solaires estimé	020 - Basé sur 20 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