Publié: 2014 Dec 16 1221 UTC
Active (M-class flares expected, probability >=50%)
Quiet (A<20 and K<4)
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 16 Dec 2014 | 172 | 005 |
| 17 Dec 2014 | 175 | 007 |
| 18 Dec 2014 | 175 | 007 |
The Sun released twelve C flares during the past 24 hours, all but two produced by NOAA AR 2242, which now has beta-gamma-delta configuration. The brightest flare was a C5.6 flare released by AR 2242 peaking at 11:40 UT on December 16. In the next 24 hours, C flaring and an occasional M flare are possible, especially from AR 2242 and 2241. After having increased from about 410 to 540 km/s on December 15, the solar wind speed observed by ACE decreased again to its current value of about 410 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) decreased from about 10 to 6 nT. Over the past 24 hours, geomagnetic conditions were quiet (K Dourbes between 1 and 3; NOAA Kp between 1 and 3). Quiet geomagnetic levels (K Dourbes < 4) are expected on December 16, 17 and 18.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 122, sur la base de 11 stations.
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 169 |
| AK Chambon La Forêt | 024 |
| AK Wingst | 018 |
| Ap estimé | 017 |
| Nombre international de taches solaires estimé | 119 - Basé sur 11 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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| Dernier orage géomagnétique | 22/12/2025 | Kp5 (G1) |
| Jours sans taches solaires | |
|---|---|
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|---|---|
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