Affichage des archives de dimanche, 5 août 2018
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2018 Aug 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 Aug 2018 | 071 | 010 |
| 06 Aug 2018 | 071 | 010 |
| 07 Aug 2018 | 071 | 011 |
Bulletin
Solar activity was at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.
Solar activity is expected to remain at very low levels.
Solar wind speed varied between 380 and 330 km/s, ending the period near 340 km/s (DSCOVR). Bz was near neutral values until midnight, when it started varying between -6 and +6 nT. The interplanetary magnetic field was mostly directed away from the Sun (positive sector) until around 04:30UT when it turned towards the Sun (negative sector), indicative of a possible sector boundary crossing. Quiet geomagnetic conditions were observed, with an isolated unsettled interval at Dourbes (06-09UT).
Geomagnetic activity is expected to continue at quiet to unsettled levels. In response to a weak wind stream associated with a small negative polarity equatorial coronal hole (CH), an active interval is possible on 5 or 6 August. Another wind stream enhancement associated with a small positive polarity equatorial CH may start influencing the earth environment around 7 August, which may result in an isolated active episode.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 22 stations.Indices solaires pour 04 Aug 2018
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 070 |
| AK Chambon La Forêt | 008 |
| AK Wingst | 006 |
| Ap estimé | 006 |
| Nombre international de taches solaires estimé | 000 - Basé sur 26 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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