Affichage des archives de lundi, 25 mai 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 May 25 1250 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
25 May 2020	069	009
26 May 2020	069	007
27 May 2020	068	007

Bulletin

Solar flaring activity is low, without C-class or even B-class flares reported during last 24 hours. The only active region (not numbered) presently observed on the visible side of the solar disc continues to decay as it approaches the West solar limb. Two rather faint CMEs were observed yesterday morning, but as they originate from the active region situated close to the East solar limb, as seen by STEREO A, the CMEs are back sided and will not arrive to the Earth. During last 24 hours the solar protons remained at the background level.

The Earth is presently inside the slow solar wind with the speed of about 320 km/s and the interplanetary magnetic field magnitude is 6 nT. The extension of the southern polar coronal hole (up to S25) has crossed central meridian today. The solar wind originating from this coronal hole might reach the Earth late on May 29. The geomagnetic conditions are presently quiet and we expect quiet to possibly unsettled geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 25 stations.

Indices solaires pour 24 May 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	010
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	000 - Basé sur 30 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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