Affichage des archives de jeudi, 16 janvier 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Jan 16 1231 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
16 Jan 2020	071	009
17 Jan 2020	070	007
18 Jan 2020	070	006

Bulletin

Sun remains to be spotless and accordingly solar flaring activity is very low, without any flares reported in last several days. We do not expect any flaring activity in the coming hours. During last 24 hours there were no Earth directed CMEs and the solar protons remained at the background level.

The solar wind speed is presently about 380 km/s and the interplanetary magnetic field magnitude is 3 nT. The increase of the density and fluctuation of the interplanetary magnetic field observed this morning, was followed by the increase of the temperature and solar wind speed. These observations show possible arrival of the solar wind from the positive polarity coronal hole that reached central meridian on January 10. Patchy, negative polarity coronal hole has reached central meridian this morning. The solar wind originating from this coronal hole might be expected at the Earth in the second half of the January 20. Presently geomagnetic conditions are quiet to unsettled and we expect them to stay so in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 16 stations.

Indices solaires pour 15 Jan 2020

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

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