Affichage des archives de vendredi, 27 avril 2018
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2018 Apr 27 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 | |
|---|---|---|
| 27 Apr 2018 | 069 | 007 |
| 28 Apr 2018 | 067 | 007 |
| 29 Apr 2018 | 066 | 007 |
Bulletin
There is one active region on the disc, NOAA AR 2706 that decayed from beta to alpha magnetic field configuration. No C-class flares in past 24 h and the situation is not expected to change.
No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 h.
The solar wind speed at L1 is at 390 km /s with interplanetary magnetic field magnitude of 6 nT. Geomagnetic conditions are quiet and expected to remain so. The high speed stream from the southern extension of the northern polar coronal hole can still arrive today (and provoke isolated active geomagnetic conditions), although it may pass north of the Earth without affecting it.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 015, sur la base de 13 stations.Indices solaires pour 26 Apr 2018
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 069 |
| AK Chambon La Forêt | 008 |
| AK Wingst | 004 |
| Ap estimé | 004 |
| Nombre international de taches solaires estimé | 014 - Basé sur 30 stations |
Résumé des événements marquants
| Jour | Commencer | Max | Fin | Loc | Force | OP | 10cm | Catania/NOAA | Types de sursaut radio | |
|---|---|---|---|---|---|---|---|---|---|---|
| Aucun | ||||||||||
Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive
Toutes les heures sont indiquées en UTC
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