Affichage des archives de jeudi, 5 mars 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Mar 05 1225 UTC

Prévisions SIDC

Éruptions solaires

Eruptive (C-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
05 Mar 2015	125	008
06 Mar 2015	128	014
07 Mar 2015	130	018

Bulletin

The strongest event of the period was a C3.5 flare peaking at 09:47UT by the active region at or just behind the southeast limb. Two C1 flares were observed, with sources resp. NOAA 2293 and a spotless region currently located at S10E40. Both eruptions showed interaction with a nearby filament. If the filament near NOAA 2293 erupts, it may be geo- effective. No earth-directed coronal mass ejections were observed. C-class flaring is expected, with a chance on an M-class flare. Quiet to unsettled geomagnetic conditions were observed, with locally (Dourbes) an active episode at the beginning of the period. Solar wind speed varied mostly between 530 and its current 440 km/s, with Bz mostly positive and varying between -5 and +6 nT. The interplanetary magnetic field was mostly directed away from the Sun. Quiet to unsettled geomagnetic conditions are expected, until the arrival of the high speed stream from a coronal hole late on 06 or on 07 March when active episodes may be possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 021, sur la base de 16 stations.

Indices solaires pour 04 Mar 2015

Nombre de Wolf, observé par Catania	099
Flux solaire à 10 cm	124
AK Chambon La Forêt	017
AK Wingst	009
Ap estimé	010
Nombre international de taches solaires estimé	034 - Basé sur 27 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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