Affichage des archives de jeudi, 17 octobre 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Oct 17 1259 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
17 Oct 2013	128	007
18 Oct 2013	125	007
19 Oct 2013	124	007

Bulletin

Solar activity has been low, there is potential for moderate conditions in NOAA ARs 1861 and 1865. They have been both producing C class flares, together with 1870 and 1867. AR 1865 produced the strongest flare in the past 24h: a C8.9 with peak at 14:32 UT on October 16. There was a slow faint full halo CME, seen first at 15:48 UT (first seen in LASCO C2). It was related with a C1.8 flare from NOAA AR 1870. The bulk of the material was directed towards the west, with a speed of 300 km/s. An impact with the Earth is possible early on October 21, although geomagnetic conditions are not expected to be greatly affected by this weak event. The solar wind speed at the L1 point is 450 km/s with magnetic fields around 4 nT. Geomagnetic conditions have ranged from quiet to unsettled, quiet conditions are expected for next 48h.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 102, sur la base de 11 stations.

Indices solaires pour 16 Oct 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	128
AK Chambon La Forêt	019
AK Wingst	014
Ap estimé	013
Nombre international de taches solaires estimé	095 - Basé sur 15 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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