Affichage des archives de lundi, 16 décembre 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Dec 16 1211 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
16 Dec 2013	152	006
17 Dec 2013	150	008
18 Dec 2013	145	008

Bulletin

The background X-ray radiation is situated in the top B-level (B7). The strongest solar flare was a C3.6 flare originating from Catania sunspot region 80 (NOAA AR 1917). The probability for C-flares is around 70%, M-flares around 20%, the chances for an X-flare are low. The >10MeV proton flux measured by GOES had a small bump, but remained below the event threshold (10 pfu) and is now back at background level. The origin of this enhancement currently is unclear. No Earth directed CMEs were observed in coronagraphic data. We are currently inside a slow solar wind stream with a solar wind speed of 400 km/s, as observed by ACE. The interplanetary magnetic field currently is weak with a magnitude of about 5 nT. Geomagnetic conditions are quiet (K<3) to unsettled (K=3) and are expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 080, sur la base de 11 stations.

Indices solaires pour 15 Dec 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	156
AK Chambon La Forêt	011
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	091 - Basé sur 17 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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