Affichage des archives de samedi, 31 mai 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 May 31 1243 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
31 May 2014	107	003
01 Jun 2014	111	003
02 Jun 2014	115	006

Bulletin

Over the last 24 hours, only one C-class flare was observed. This C1-flare peaked on 31 May at 07:05UT, and originated from the active region that is about to round the east-northeast limb. There are currently 5 sunspot groups visible. They are all small and magnetically simple. There's a small chance on a C-class flare, in particular from the region near the east-northeast limb. Solar wind speed varied mostly between 320 and 360 km/s. Bz was initially negative with excursions up to -11nT. Around 19:00UT on 30 May, Bz turned positive reaching +10nT, and stayed mostly positive for the remainder of the period. The geomagnetic field was quiet with locally an active episode. A small coronal hole that passed the central meridian on 29 May can influence the geomagnetic field as of 2 June. 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 : 039, sur la base de 19 stations.

Indices solaires pour 30 May 2014

Nombre de Wolf, observé par Catania	081
Flux solaire à 10 cm	102
AK Chambon La Forêt	020
AK Wingst	014
Ap estimé	013
Nombre international de taches solaires estimé	040 - 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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