Affichage des archives de samedi, 26 juillet 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jul 26 1244 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
26 Jul 2014	113	006
27 Jul 2014	118	007
28 Jul 2014	123	007

Bulletin

Solar activity has been low but increasing over the past 24 hours. The background X-ray flux has increased gradually from around the B3 level to over the B4 level. 2 low level C flares have occurred: one originating in newly numbered NOAA AR 2015 peaking at 5:04 UT (C1.0), and just recently a C1.1 flare peaking at 11:43 UT originating from Catania group 24 (NOAA AR 2123). The latter one appears to be eruptive. Low solar activity with C flares likely is expected for the next days with a slight chance for M flares increasing with the returning active region that is rotating into view. No significant earth directed CME's have been reported. The solar wind speed increased to about 400 km/s at the end of the reporting period. The total magnetic field also increased to levels around 8nT with Bz variable within that magnitude. Geomagnetic conditions have been quiet (NOAA Kp 1-2, local K Dourbes 0-3) with just an isolated local unsettled period at 8UT. Over the next days the slightly enhanced solar wind conditions are expected to continue as well as quiet to unsettled geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 044, sur la base de 09 stations.

Indices solaires pour 25 Jul 2014

Nombre de Wolf, observé par Catania	089
Flux solaire à 10 cm	107
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	007
Nombre international de taches solaires estimé	049 - Basé sur 26 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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