Affichage des archives de mardi, 29 juillet 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jul 29 1216 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
29 Jul 2014	140	004
30 Jul 2014	145	004
31 Jul 2014	150	004

Bulletin

The strongest flare of the last 24 hours took place in NOAA 2125. The C2 flare peaked at 14:10UT and was associated to a non-Earth directed CME. The 4 other C-class flares were all minor C1 events taking place in the trailing portion of growing active region NOAA 2126.The other 8 sunspot groups were quiet, including NOAA 2127 which has some mixed magnetic polarities. Further C-class flaring is expected, in particular from NOAA 2126 and 2127. After yesterday's sector boundary crossing, solar wind speed decreased from 450 to 350 km/s. Initially, Bz varied between +6 and -6 nT, but its amplitude gradually decreased to 2 near the end of the reporting period. Geomagnetic conditions evolved from unsettled to quiet. Quiet geomagnetic conditions are expected, with locally an unsettled period possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 100, sur la base de 15 stations.

Indices solaires pour 28 Jul 2014

Nombre de Wolf, observé par Catania	184
Flux solaire à 10 cm	132
AK Chambon La Forêt	016
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	086 - Basé sur 22 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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