Affichage des archives de samedi, 13 juillet 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Jul 13 1209 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
13 Jul 2013	115	017
14 Jul 2013	110	007
15 Jul 2013	100	007

Bulletin

Solar activity was low during the past 24 hours, with only C class flares reported. The strongest event, a C3.5 flare, took place in NOAA AR 1785 on July 12, 1733 UT (peak time). It was accompanied by a very faint CME observed by LASCO C2. Due to the position of the source region, and with the information currently available, this event does not seem to be geoffective. C flares are possible in the next 48 hours, in particular from NOAA AR 1785, 1787 and 1791, and we therefore foresee eruptive conditions. We expect mostly quiet to unsettled conditions for the next 48 hours in terms of geomagnetic activity. ACE observations show that the Earth is currently within a magnetic cloud, probably associated with the halo CME of July 9th. The first hint of its arrival was detected on July 12th, a bit after 1600 UT, with moderate negative excursions of the Bz component of the interplanetary magnetic field.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 021, sur la base de 08 stations.

Indices solaires pour 12 Jul 2013

Nombre de Wolf, observé par Catania	087
Flux solaire à 10 cm	118
AK Chambon La Forêt	019
AK Wingst	011
Ap estimé	010
Nombre international de taches solaires estimé	048 - 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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