Affichage des archives de vendredi, 10 juillet 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Jul 10 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
10 Jul 2015	118	005
11 Jul 2015	115	021
12 Jul 2015	115	014

Bulletin

No significant flares were recorded, with NOAA 2373 and 2384 producing a single B-class flare each. The other regions were quiet. A compact region (Catania 11) about 20 degrees to the west of NOAA 2381 is developing quickly and shows some mixed magnetic polarities. No obvious Earth-directed coronal mass ejections (CME) were observed. A 140 degrees wide CME first observed by LASCO/C2 at 00:48UT seems to have been the result of a series of very slow eruptions along a lengthy filament channel near -45 degrees latitude. The bulk of the ejected material is directed well south of the ecliptic.

There remains a good chance on a C-class flare.

Solar wind speed varied between 340 and 400 km/s, with Bz fluctuating between -4 and +3 nT. Quiet to unsettled geomagnetic conditions were observed and are expected to persist.

Active geomagnetic conditions are possible late 10 or on 11 July under the effects of the equatorial coronal hole wind stream. A minor storming episode is not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 117, sur la base de 21 stations.

Indices solaires pour 09 Jul 2015

Nombre de Wolf, observé par Catania	144
Flux solaire à 10 cm	122
AK Chambon La Forêt	008
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	115 - Basé sur 29 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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