Publié: 2018 Dec 30 1230 UTC
Quiet conditions (<50% probability of C-class flares)
Quiet (A<20 and K<4)
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 30 Dec 2018 | 069 | 009 |
| 31 Dec 2018 | 069 | 006 |
| 01 Jan 2019 | 069 | 003 |
Solar activity remained at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CMEs) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A negative polarity equatorial coronal hole (CH) is starting its transit of the central meridian.
Solar activity is expected to remain at very low levels.
Earth remained under the influence of the High Speed Stream (HSS) associated with the positive polarity coronal hole (CH). Solar wind speed varied mostly between 490 and 550 km/s, with a brief maximum of 565 km/s around 16UT (DSCOVR). Bz varied between -5 and +5 nT. The interplanetary magnetic field was directed away from the Sun (positive sector). Geomagnetic activity ranged from quiet to unsettled conditions.
Quiet to unsettled geomagnetic conditions are expected, an isolated active interval remains possible.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 10 stations.
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 069 |
| AK Chambon La Forêt | 015 |
| AK Wingst | 012 |
| Ap estimé | 011 |
| Nombre international de taches solaires estimé | 000 - Basé sur 18 stations |
| 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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