Affichage des archives de mercredi, 7 février 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Feb 07 1230 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
07 Feb 2018	077	003
08 Feb 2018	078	010
09 Feb 2018	079	006

Bulletin

Solar activity was low. NOAA AR 2699 produced many B-class flares and one C1.0 flare that peaked at 18:58 UT yesterday. Now NOAA 2699 has beta magnetic field configuration and is expected to produce more B-class flares and, with some chance, C-class flares. Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed. Solar wind parameters were still under the influence of a low latitude extension of the northern polar coronal hole. Solar wind speed was between 400-460 km/s with interplanetary magnetic field magnitude ranged from 2 to 6 nT. Geomagnetic conditions have been mostly quiet reaching unsettled levels (K = 3) overnight, as measured locally at Dourbes. Geomagnetic conditions are expected to remain quiet today. Isolated episodes of unsettled levels are possible from tomorrow due to the better connection to a low latitude extension of the northern polar coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 022, sur la base de 19 stations.

Indices solaires pour 06 Feb 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	077
AK Chambon La Forêt	007
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	017 - Basé sur 19 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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