Affichage des archives de samedi, 2 décembre 2017
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2017 Dec 02 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 | |
|---|---|---|
| 02 Dec 2017 | 070 | 002 |
| 03 Dec 2017 | 069 | 007 |
| 04 Dec 2017 | 069 | 034 |
Bulletin
Solar activity was at very low levels. Active region NOAA 2689 rotated over the NW limb and left the solar disk spotless. The region produced a B1 flare at 14:10UT. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.
Quiet flaring conditions are expected.
Solar wind speed decreased from initial values near 460 km/s to values around 410 km/s by the end of the period. Bz varied between +5 nT and -5 nT. The interplanetary magnetic field was mostly directed towards the Sun. The extension of a positive northern polar CH is transiting the central meridian.
The geomagnetic activity was at unsettled to quiet levels. Quiet geomagnetic conditions are expected to continue until the arrival of the high speed stream from the northern polar coronal hole (CH) extension and its associated preceding co-rotating interaction region. Based on observations from the previous solar rotation and from STEREO-A, the earth environment may be affected starting late on 03 December or on 04 December, with minor to moderate geomagnetic storming possible.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 05 stations.Indices solaires pour 01 Dec 2017
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 070 |
| AK Chambon La Forêt | 011 |
| AK Wingst | 010 |
| Ap estimé | 008 |
| Nombre international de taches solaires estimé | 000 - Basé sur 15 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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