Affichage des archives de vendredi, 11 décembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Dec 11 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
11 Dec 2020	081	007
12 Dec 2020	082	007
13 Dec 2020	083	007

Bulletin

NOAA AR 2790 is the only visible active region on the solar disc, it did not produce any C-class flares or larger in the past 24 hours. A new region is rotating into view from the east limb. C-class flares are possible.

No Earth directed CMEs were detected in the past 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 450 km/s to 500 km/s with interplanetary magnetic field magnitude around 5 nT, in the past 24 hours. Bz was never below -5 nT. The fast solar wind from an equatorial patchy coronal hole may still affect the Earth in the next 24 hours.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 0-3 and NOAA Kp 0-3). Geomagnetic conditions could increase in the next 24 hours, due to the arrival of high speed solar wind, otherwise quiet conditions are expected.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 05 stations.

Indices solaires pour 10 Dec 2020

Nombre de Wolf, observé par Catania	022
Flux solaire à 10 cm	082
AK Chambon La Forêt	013
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	010 - Basé sur 19 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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