Affichage des archives de mardi, 23 janvier 2018
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2018 Jan 23 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 | |
|---|---|---|
| 23 Jan 2018 | 070 | 005 |
| 24 Jan 2018 | 069 | 004 |
| 25 Jan 2018 | 069 | 003 |
Bulletin
Solar activity was at very low levels. Spotless region NOAA 2696 was quiet. No earth-directed 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.
Earth is under the weakening influence of the wind stream from the trans- equatorial extension of the negative southern polar coronal hole (CH). Solar wind speed gradually decreased from an initial range between 520-550 km/s to a current range between 470-500 km/s (DSCOVR). Bz varied between -4 and +4 nT. The interplanetary magnetic field was mostly directed towards the Sun.
The geomagnetic field was at quiet to unsettled levels and is expected to remain so, with a decreasing chance on an isolated active episode.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.Indices solaires pour 22 Jan 2018
| Nombre de Wolf, observé par Catania | 000 |
| Flux solaire à 10 cm | 070 |
| AK Chambon La Forêt | 021 |
| AK Wingst | 013 |
| Ap estimé | 014 |
| Nombre international de taches solaires estimé | 000 - Basé sur 22 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
Dernières nouvelles
Happy New Year! Celebrate with an M7.1 solar flare!
M8.1 solar flare with earth-directed CME
X1.9 solar flare, Coronal hole faces Earth
Forum
Aidez SpaceWeatherLive.com !
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
La Météo Spatiale en faits
| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 31/12/2025 | M7.2 |
| Dernier orage géomagnétique | 22/12/2025 | Kp5 (G1) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| novembre 2025 | 91.8 -22.8 |
| janvier 2026 | 120 +28.2 |
| 30 derniers jours | 114.5 +16.4 |