Affichage des archives de vendredi, 31 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 31 1250 UTC

Prévisions SIDC

Éruptions solaires

Active (M-class flares expected, probability >=50%)

Géomagnétisme

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

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
31 Oct 2014	135	012
01 Nov 2014	130	018
02 Nov 2014	130	017

Bulletin

During the past 24 hours, solar flaring activity was at the C-level, with a C9.7 as strongest flare. The background irradiation is decreasing as Catania group 88 (NOAA 2192) is rounding the west limb. Flares originated from Catania groups 88, 98 and 3 (NOAA 2192, 2200 and 2201 respectively). The C6.9 flare, originating from Catania group 3, peaked at 13:12 UT on October 30 and C2.3 flare, originating from Catania group 98, peaked at 15:03 UT. Both flares were accompanied by radio type II bursts and narrow eastward propagating CMEs. These CMEs will not have any impact on Earth. Due to the position of Catania group 88, we retain the warning condition for a proton event. The solar wind speed, observed by ACE, increased from 350 to 450 km/s, the interplanetary magnetic field went up in magnitude to about 12 nT and also the temperature increased. A northern coronal hole (extending from N10 to N55) has passed the central meridian and the associated high speed stream might arrive at the end of November 2. Quiet to active conditions are expected, with limited chances for minor storm conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 060, sur la base de 15 stations.

Indices solaires pour 30 Oct 2014

Nombre de Wolf, observé par Catania	153
Flux solaire à 10 cm	140
AK Chambon La Forêt	008
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	080 - Basé sur 21 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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