Affichage des archives de dimanche, 9 août 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Aug 09 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
09 Aug 2015	120	008
10 Aug 2015	120	008
11 Aug 2015	120	007

Bulletin

Two C-class flares were recorded during the past 24 hours, originating from NOAA active region 2396. The strongest flare was a C4.2 flare, peaking at 7:52 UT. An eruption also occurred near NOAA active region 2393 close to the West limb, peaking at 11:44 UT in SDO/AIA. Coronagraphic imagery is not yet available to analyze any potential CME.

Three CMEs, with first measurements at 20:36 UT and 22:24 UT (on August 7), 00:12 UT (on August 8), were related to eruptions in the Southeast and the Northwest quadrant. The third CME was the strongest one having an apparent width of about 160 degrees. These CMEs have no Earth-bound component, so no geomagnetic consequences are expected.

Flares at the C-level are expected. Also an M-class flare is possible, but not very likely.

The solar wind speed has values varying from 460 to 570 km/s and the magnitude of the interplanetary magnetic field (IMF) is below 10 nT. Geomagnetic conditions are quiet to unsettled, at global (estimated NOAA Kp) and local (Dourbes) levels, and are expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 070, sur la base de 18 stations.

Indices solaires pour 08 Aug 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	121
AK Chambon La Forêt	019
AK Wingst	014
Ap estimé	014
Nombre international de taches solaires estimé	089 - Basé sur 27 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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