Affichage des archives de dimanche, 13 décembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Dec 13 1230 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
13 Dec 2020	081	007
14 Dec 2020	081	007
15 Dec 2020	081	007

Bulletin

NOAA AR 2790 (alpha) is rotating out of view over the west limb, NOAA AR 2792 (beta) rotated into view from the east one. They did not produce any C-class flares or larger in the past 24 hours. But they produced several B-class flares. C-class flares are possible in the next 24 h.

No Earth directed CMEs were seen in the last 24 hours.

The greater than 10 MeV proton flux is at background levels and is expected to remain at background levels. The greater than 2MeV electron flux did not exceed the 1000 pfu alert threshold, it is expected to remain so in the next 24 hours. The 24h electron fluence was at moderate levels, it is expected to remain so in the next 24 hours

The solar wind speed ranged from 425 km/s to 375 km/s with interplanetary magnetic field magnitude around 5 nT, in the past 24 hours. The magnetic field polarity is negative, pointing towards the Sun. Bz was never below -5 nT.

Geomagnetic conditions were quiet to unsettled (K Dourbes 0-3 and Kp 0-3). Geomagnetic conditions are expected to remain quiet.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 12 stations.

Indices solaires pour 12 Dec 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	082
AK Chambon La Forêt	010
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	010 - Basé sur 08 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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