Affichage des archives de dimanche, 19 janvier 2025
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2025 Jan 19 1231 UTC
Prévisions SIDC
Éruptions solaires
M-class flares expected (probability >=50%)
Géomagnétisme
Quiet (A<20 and K<4)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 19 Jan 2025 | 240 | 007 |
| 20 Jan 2025 | 250 | 007 |
| 21 Jan 2025 | 250 | 007 |
Régions solaires actives et éruptions solaires
Solar flaring activity was moderate over the past 24 hours, with 1 M-class flare identified. The largest flare was a M2.4 flare (SIDC Flare 3331) peaking on January 19 at 03:32 UTC, which was produced by SIDC Sunspot Group 378 (NOAA Active Region 3964). A total of 7 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 346 (NOAA Active Region 3961) and SIDC Sunspot Group 378 (NOAA Active Region 3964) are the most complex Active Regions (Beta-Gamma- Delta), with SIDC Sunspot Group 378 (NOAA Active Region 3964) in charge of the majority of the flaring. Solar flaring activity is expected to be moderate over the next 24 hours, with C-class flares and M-class flares very likely and a chance for X-class flares.
Éjection de masse coronale
No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.
Vent solaire
The solar wind conditions at Earth is slow. The solar wind speed was around 470 km/s and interplanetary magnetic field around 6 nT with the Bz reaching a minimum value of -6 nT. No enhancement of the sw speed and magnetic field is expected in the next 24h.
Géomagnétisme
Geomagnetic conditions were globally quiet to active (Kp 4) and locally quiet to unsettled (K Bel 3). Quiet conditions are expected in the next 24 hours.
Niveaux de flux de protons
The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days.
Flux d'électrons sur l'orbite géostationnaire
The greater than 2 MeV electron flux measured by GOES 16 remained below the 1000 pfu alert threshold, and it is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 173, sur la base de 04 stations.Indices solaires pour 18 Jan 2025
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 222 |
| AK Chambon La Forêt | /// |
| AK Wingst | 009 |
| Ap estimé | 009 |
| Nombre international de taches solaires estimé | 150 - Basé sur 09 stations |
Résumé des événements marquants
| Jour | Commencer | Max | Fin | Loc | Force | OP | 10cm | Catania/NOAA | Types de sursaut radio |
|---|---|---|---|---|---|---|---|---|---|
| 19 | 0328 | 0332 | 0336 | ---- | M2.4 | --/3964 |
Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive
Toutes les heures sont indiquées en UTC
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La Météo Spatiale en faits
| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 27/12/2025 | M5.1 |
| 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 |
| décembre 2025 | 115.5 +23.7 |
| 30 derniers jours | 113.8 +28 |