Affichage des archives de samedi, 1 juin 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Jun 01 1259 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
01 Jun 2013	102	053
02 Jun 2013	102	015
03 Jun 2013	102	003

Bulletin

During the past 24 hours an M1.0 flare erupted from Catania sunspot group 90 (NOAA AR 1760) at 20:00 UT on May 31. This was associated with type II (speed of 1393 km/s) and type IV radio bursts. No associated strong CMEs were observed at that time. CACTus detected a partial halo CME on May 31 associated with a broad filament eruption on the north (oriented from NE to SW). It involves two successive CMEs: one with signatures in LASCO at 11:48 UT and one starting at 17:24 UT. Both CMEs mainly have a North-ward oriented component and are not oriented to the Earth. C-class flaring activity is expected and there exits a slight chance for an M-class flare. Biggest candidates are Catania sunspot groups 88 and 90. A shock was observed in the solar wind speed on May 31 around 15:30 UT. The speed went up from around 350 km/s to around 650 km/s and also corresponds to a jump in the solar wind temperature and density. On June 1, the interplanetary magnetic field reached a magnitude around 20 nT with Bz component varying between -20 and +15 nT. This is related to the arrival of a corotating- interaction region (CIR) related to the coronal hole (CH). The K index has reached storm levels (K up to 6 measured at Dourbes). We expect the minor storm conditions to continu for today activity will decrease to unsettled to active conditions tomorrow.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 044, sur la base de 14 stations.

Indices solaires pour 31 May 2013

Nombre de Wolf, observé par Catania	073
Flux solaire à 10 cm	102
AK Chambon La Forêt	044
AK Wingst	012
Ap estimé	011
Nombre international de taches solaires estimé	039 - Basé sur 31 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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