Affichage des archives de vendredi, 1 novembre 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Nov 01 1221 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
01 Nov 2013	140	009
02 Nov 2013	140	003
03 Nov 2013	140	006

Bulletin

The sun produced one M and seven C flares during the past 24 hours. Catania sunspot region 18 (NOAA AR 11877) was responsible for the M1.9 flare peaking at 13:51 UT on October 31. Most C flares originated from Catania sunspot region 29 (NOAA AR 11884). During the next 48 hours, more C flaring activity is expected with a slight chance for an M flare, especially from Catania sunspot region 29 (NOAA AR 11884), which retains a beta-gamma-delta configuration of its photospheric magnetic field. LASCO/C2 (at 18:12 UT on October 31) and LASCO/C3 observed a mainly south directed CME, which will at most only produce a glancing blow. Due to the low speed (CACTus estimation 254 km/s), no effect on geomagnetic conditions is expected. Solar wind parameters observed by ACE indicated the arrival of a weak transient at 10:00 UTC on October 31, possibly related to the CME of 15:24 UT on October 28. A slight increase in solar wind speed, temperature and density was measured. The magnitude of the interplanetary magnetic field (IMF) went to 12 nT and is now stable around 5 nT. Current solar wind speed is around 350 km/s. Geomagnetic activity is quiet to unsettled (local K at Dourbes and NOAA Kp between 0 and 3), which is expected to remain so within the next 48 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 085, sur la base de 08 stations.

Indices solaires pour 31 Oct 2013

Nombre de Wolf, observé par Catania	138
Flux solaire à 10 cm	143
AK Chambon La Forêt	013
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	/// - Basé sur /// 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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