Affichage des archives de jeudi, 29 mai 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 May 29 1226 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 May 2014	096	008
30 May 2014	094	007
31 May 2014	098	004

Bulletin

NOAA 2071 produced the only flare of the period, a C1 flare peaking at 04:30UT this morning. The 4 sunspot regions currently visible are all small and magnetically simple. No Earth-directed CMEs were observed. An active region on the Sun's farside that produced several substantial CMEs over the past few days, is expected to round the east limb within 2 days. Flaring activity is expected to be low, with a small chance on a C-class flare. For most of the period, solar wind speed was stable around 330 km/s, with Bz varying between +6 and -5 nT. Around 08:30UT, a shock was observed in the ACE-data. Solar wind speed jumped from 330 to 380 km/s, and Bz from -5 to -8nT. The geomagnetic field was quiet, with the K index reaching 3. A small coronal hole that passed the central meridian on 25-26 May could influence the geomagnetic field starting late on 29 May. Geomagnetic conditions are expected to remain quiet, though locally a brief active episode is possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 035, sur la base de 15 stations.

Indices solaires pour 28 May 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	099
AK Chambon La Forêt	008
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	057 - Basé sur 09 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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