Affichage des archives de samedi, 16 février 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Feb 16 1217 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 Feb 2013	103	001
17 Feb 2013	105	008
18 Feb 2013	107	011

Bulletin

Flaring activity was low during the past 24 hours, and it is expected that the next 48 hours should be mostly quiet, with however a risk for C class flares from NOAA ARs 1670 and 1673. A CME was observed on Feb. 15, around 1736 UT on LASCO C2. It is a partial halo event, originating from a small eruptive event taking place to the south-east of NOAA AR 1671 around 1615UT. Due to the position of the source region, this event might arrive at Earth, although STEREO observations are scarce at the time this bulletin is prepared. Preliminary estimates give an arrival around Feb. 20, but this will be refined as new information is available. Unsettled to active conditions might be expected from this event. In the meanwhile, geomagnetic conditions are expected to be mostly quiet to unsettled for the next 48 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 022, sur la base de 06 stations.

Indices solaires pour 15 Feb 2013

Nombre de Wolf, observé par Catania	057
Flux solaire à 10 cm	100
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	027 - Basé sur 16 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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