Affichage des archives de lundi, 20 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 20 1303 UTC

Prévisions SIDC

Éruptions solaires

Major flares expected (X-class flares expected, probability >=50%)

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
20 Oct 2014	178	018
21 Oct 2014	181	016
22 Oct 2014	183	016

Bulletin

Six sunspot groups are reported by Catania today. The main source of the solar flaring activity is the Catania sunspot group 88 (NOAA AR 2192) that is growing in size and complexity. Now it has beta-gamma-delta configuration of its photospheric magnetic field. After yesterday's X1.1 flare, the strongest flare was the M3.9 flare peaking at 09:11 UT today. This flare was not accompanied by a CME. We expect more flaring activity up to X-level from this sunspot group. The Earth is currently inside a solar wind flow with intermediate speeds (around 500-550 km/s). This flow might be associated with a narrow low-latitude coronal hole that passed the solar central meridian on October 17-18. The interplanetary magnetic field (IMF) magnitude was elevated (up to 9 nT), and the IMF was directed predominantly southward during the last several hours. Intervals of active geomagnetic conditions (K = 4) were reported by Dourbes and NOAA. We expect quiet to active geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 086, sur la base de 14 stations.

Indices solaires pour 19 Oct 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	173
AK Chambon La Forêt	017
AK Wingst	010
Ap estimé	012
Nombre international de taches solaires estimé	064 - Basé sur 20 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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