Affichage des archives de samedi, 11 janvier 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jan 11 1219 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Proton event in progress (>10 MeV)

	Flux de 10 cm	Ap
11 Jan 2014	165	017
12 Jan 2014	155	014
13 Jan 2014	150	005

Bulletin

Flaring activity was at C class level since our last bulletin. A C4.4 flare with a peak on January 11 at 8:35 UTC was the strongest event and originated from Catania sunspot group 98 (NOAA AR 1944). More C flares are expected within the next 48 hours. Chances for M flares are estimated at 40% and for X flares at 10%. The proton event for the >10MeV protons is, strictly speaking, still going on, but the proton flux is expected to be below the event threshold (10 pfu) within the next few hours. The solar wind speed had values between 400 and 450 km/s. The magnitude of the interplanetary magnetic field reached a maximum value of 7 nT, with a Bz- component between -4 to +5 nT. Geomagnetic conditions were at quiet (K=0 to 2). Quiet to active levels (K=0 to 4) are expected within the next few hours due to the arrival of a coronal hole high speed stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 098, sur la base de 14 stations.

Indices solaires pour 10 Jan 2014

Nombre de Wolf, observé par Catania	206
Flux solaire à 10 cm	175
AK Chambon La Forêt	006
AK Wingst	006
Ap estimé	004
Nombre international de taches solaires estimé	103 - Basé sur 23 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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