Affichage des archives de mercredi, 9 juillet 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jul 09 1229 UTC

Prévisions SIDC

Éruptions solaires

Active (M-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
09 Jul 2014	200	013
10 Jul 2014	198	011
11 Jul 2014	195	006

Bulletin

Catania sunspot regions 6 and 9 (NOAA 2108 and 2109 respectively) are still the largest and most complex regions on the solar disk. However Catania region 16 (NOAA AR 2113) has also grown, developed to a beta-gamma region and was most active during the past period. Two M-class and five C-class flares were detected by GOES X-ray. A M1.2 flare, peaking at 00:26 UT on July 9, and an M6.5 flare, peaking at 16:20 UT on July 8, originated from Catania region 16. The M6.5-flare was associated with dimming, type II and IV radio bursts and a partial halo CME. The CME was first seen in the SOHO/LASCO C2 field of view at 16:36 UT, had an angular width of 126 degrees and a projected plane of the sky speed of 466 km/s (as reported by the CACTus software). The bulk of the CME mass was ejected east from the Sun-Earth line. The arrival of a glancing blow from the CME-driven shock wave is possible in the evening of July 11. Flaring activity is expected to continue with C-class flares and possibly an isolated M-class flare. Solar wind speed is stable near 350 km/s, as measured by ACE. The magnitude of interplanetary magnetic field obtained values between 3 and 8 nT with a mainly negative Bz component. Geomagnetic conditions have been quiet to unsettled and are expected to remain so until the arrival of a fast speed stream that may result in active conditions within the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 124, sur la base de 09 stations.

Indices solaires pour 08 Jul 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	201
AK Chambon La Forêt	014
AK Wingst	010
Ap estimé	009
Nombre international de taches solaires estimé	142 - Basé sur 16 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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