Publié: 2017 Feb 18 1923 UTC
Quiet conditions (<50% probability of C-class flares)
Active conditions expected (A>=20 or K=4)
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 18 Feb 2017 | 075 | 013 |
| 19 Feb 2017 | 076 | 031 |
| 20 Feb 2017 | 078 | 019 |
Solar conditions have been quiet with X-ray flux at background levels. Catania group 93 (NOAA 2636) decayed slightly while a new region is appearing at the North Eastern limb. There is only a slight chance for C flares. No Earth directed CMEs have been observed in coronagraph data. Proton flux values are at background levels and expected to remain so.
Solar wind conditions remained enhanced under the positive polarity coronal hole influence. Solar wind speed saw a peak close to 600 km/s while magnetic field was in the 4-9nT range with a period of sustained negative Bz (down to -7nT) around midnight. Enhanced solar wind conditions will continue over the next days. Geomagnetic conditions were quiet to active (both NOAA Kp and local K Dourbes 1-4), with the active periods around midnight associated to the negative Bz values. Periods of active geomagnetic conditions remain possible over the next days.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 17 stations.
| Nombre de Wolf, observé par Catania | 012 |
| Flux solaire à 10 cm | 075 |
| AK Chambon La Forêt | 038 |
| AK Wingst | 022 |
| Ap estimé | 023 |
| Nombre international de taches solaires estimé | 013 - Basé sur 20 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
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