Affichage des archives de jeudi, 19 décembre 2024
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2024 Dec 19 1231 UTC
Prévisions SIDC
Éruptions solaires
M-class flares expected (probability >=50%)
Géomagnétisme
Minor storm expected (A>=30 or K=5)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 19 Dec 2024 | 174 | 026 |
| 20 Dec 2024 | 176 | 013 |
| 21 Dec 2024 | 178 | 007 |
Régions solaires actives et éruptions solaires
A total of 6 numbered sunspot groups were identified on the disk over the past 24 hours. Solar flaring activity has been moderate, with 1 M-class flare detected. SIDC Sunspot Group 322 (NOAA Active Region 3927) has rocated into view from the east limb and is producing most of the flaring activity. Nevertheless, the largest flare of the last 24 hours came from SIDC Sunspot Group 337 (NOAA Active Region 3924, Beta-Gamma magnetic configration), currently close to the west limb. This was an M1.7 flare peaking at 10:38 UTC. More M-class flares are likely in the next 24 hours.
Éjection de masse coronale
No Earth directed CMEs were observed in the last 24 hours.
Vent solaire
The solar wind at Earth is returning to slow wind conditions, with speeds descending and currently around 450 km/s and interplanetary magnetic field around 5 nT (DSCOVR). A possible ICME arrival today (from the CME of 15 December), may create more disturbed conditions.
Géomagnétisme
Geomagnetic conditions have reached active levels globally (Kp up to 4), locally K_bel reached 3. The possible ICME arrival expected today, corresponding to the CME from 15 December may increase the geomagnetic conditions (most likely up to minor storm levels).
Niveaux de flux de protons
The greater than 10 MeV proton flux was below the threshold level over the past 24 hours. It is expected to remain below the threshold level over the next 24 hours.
Flux d'électrons sur l'orbite géostationnaire
The greater than 2 MeV electron flux measured by GOES 16 and GOES 18 remained below the threshold level in the last 24 hours. It is expected to remain so over the next 24 hours. The 24-hour electron fluence is presently at normal levels and is expected to remain so over the next 24 hours.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 126, sur la base de 06 stations.Indices solaires pour 18 Dec 2024
| Nombre de Wolf, observé par Catania | 118 |
| Flux solaire à 10 cm | 174 |
| AK Chambon La Forêt | 028 |
| AK Wingst | 016 |
| Ap estimé | 017 |
| Nombre international de taches solaires estimé | 116 - Basé sur 14 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
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La Météo Spatiale en faits
| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 21/12/2025 | M1.3 |
| Dernier orage géomagnétique | 21/12/2025 | 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 | 116.9 +25.1 |
| 30 derniers jours | 109 +22.2 |