Affichage des archives de mardi, 23 février 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Feb 23 1252 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
23 Feb 2016	094	006
24 Feb 2016	094	013
25 Feb 2016	096	010

Bulletin

Solar activity was very low. The largest flare of the period were a B9.7 flare from around the East limb peaking at 01:09UT and a B5. The most prominent region NOAA AR 2505 showed signs of decay. Solar activity is expected to be quiet with a possibility for an isolated C flare. No Earth directed CMEs were recorded in coronagaph data. Earth was in slow solar wind conditions with velocity in the 340-390 km/s range and total magnetic field dropping back to nominal levels of 3-5 nT. The magnetic field Bz was variable and the phi angle mainly in the negative sector. Geomagnetic conditions were quiet (local K Dourbes and NOAA Kp between 0 and 2). Nominal solar wind conditions with associated quiet geomagnetic conditions are expected to continue. The possible influence of a weak high speed stream from the extensions of the Northern polar coronal hole may, from tomorrow onwards, slightly increase solar wind conditions leading to quiet to unsettled geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 038, sur la base de 17 stations.

Indices solaires pour 22 Feb 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	094
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	034 - 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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