Affichage des archives de vendredi, 22 janvier 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Jan 22 1230 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
22 Jan 2016	104	018
23 Jan 2016	103	013
24 Jan 2016	106	005

Bulletin

NOAA 2487 produced the only C-class flare of the period, a C1.4 peaking at 13:51UT. The event lasted for 57 minutes (x-ray) and was associated with a relatively narrow coronal mass ejection (CME) that was not directed to Earth. The nearby 20 degrees long north-south oriented filament remained stable. NOAA 2486 was decaying. No earth-directed CMEs were observed.

There remains a chance on an isolated C-class flare. . The earth environment remained under the influence of the high speed stream of the southern polar coronal hole (CH). Solar wind started and ended the period with a speed of around 500 km/s, meanwhile reaching a maximum speed of about 550 km/s early on 22 January (02UT-05UT). Bz undulated between -7 nT and + 6 nT, while the interplanetary magnetic field was directed towards the Sun. Mostly active geomagnetic conditions were recorded, with locally (Dourbes) minor storming during the 22-23UT interval. The extension of a northern polar CH around +25 degrees latitude is transiting the central meridian.

Mostly quiet to unsettled geomagnetic conditions are expected, with a chance on an active episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 060, sur la base de 11 stations.

Indices solaires pour 21 Jan 2016

Nombre de Wolf, observé par Catania	057
Flux solaire à 10 cm	104
AK Chambon La Forêt	046
AK Wingst	037
Ap estimé	037
Nombre international de taches solaires estimé	058 - Basé sur 24 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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