Affichage des archives de lundi, 5 mars 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Mar 05 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
05 Mar 2018	069	007
06 Mar 2018	069	007
07 Mar 2018	069	011

Bulletin

Solar activity was very low with X-ray flux remaining below B level. There are currently no spotted regions on the visible disk, and chances for any flare occurrences are very low.

SDO/AIA 304 images show the eruption of prominence material at around N30W30 from around 5:00UT onwards. Currently available coronagraph imagery does not yet (last SoHO/LASCO C2 image at 8:00UT) show the signs of any possibly associated CME. No other CMEs were observed in coronagraph data.

Proton flux levels are at background values and are expected to remain so.

Solar wind remained just slightly enhanced with Solar wind speed increasing to just under 400 km/s. The total magnetic field was between 3 and 7.5 nT with a variable Bz. The magnetic filed phi angle was initially fluctuating but seems to have settled more steadily in a positive sector now. Solar wind conditions are expected to first recover to nominal but the influence of the coronal holes that crossed the equator over the weekend (a faint patchy region of negative polarity just south of the equator and more notably a low latitude extension of the positive polarity northern polar coronal hole) may cause some further minor perturbations in two to three days from now.

Geomagnetic conditions were quiet (both NOAA Kp and local K Dourbes 1-2) and are expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 15 stations.

Indices solaires pour 04 Mar 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	009
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	000 - Basé sur 30 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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