Affichage des archives de samedi, 23 janvier 2021

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2021 Jan 23 1238 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
23 Jan 2021	078	006
24 Jan 2021	078	007
25 Jan 2021	077	010

Bulletin

There are presently three numbered sunspot groups observed on the visible side of the Sun, Catania sunspot groups 66, 67 and 68 (NOAA ARs 2797, 2798, 2799). However, the solar flaring activity is low, and only one B-class flare was reported during last 24 hours. In the coming hours we expect occasional B-class flares while C-class flares are possible but not very probable. The filament eruption in the southern hemisphere of the Sun, observed yesterday at about 10 UT was associated with narrow and slow CME (about 90 degrees width and 230 km/s, respectively). We do not expect this CME will arrive to Earth. During last 24 hours no Earth directed CMEs were observed in coronagraph data, and proton flux levels remained at background values.

Earth is still inside a slow solar wind (about 320 km/s) and the interplanetary magnetic field magnitude is 6 nT. The geomagnetic conditions are presently quiet and we expect them to stay so in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 033, sur la base de 09 stations.

Indices solaires pour 22 Jan 2021

Nombre de Wolf, observé par Catania	039
Flux solaire à 10 cm	078
AK Chambon La Forêt	006
AK Wingst	///
Ap estimé	003
Nombre international de taches solaires estimé	031 - Basé sur 25 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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