Affichage des archives de vendredi, 19 janvier 2024
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2024 Jan 19 1240 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 | |
|---|---|---|
| 19 Jan 2024 | 160 | 007 |
| 20 Jan 2024 | 160 | 007 |
| 21 Jan 2024 | 160 | 007 |
Régions solaires actives et éruptions solaires
Solar flaring activity over the past 24 hours was at low levels with C1-C2 class flares. The solar flaring activity is likely to be at low levels over the coming days with C-class flares and possible M-class flares.
Éjection de masse coronale
Based on currently available coronagraph images several coronal mass ejections (CMEs) were observed. No Earth directed coronal mass ejections have been identified in the last 24 hours.
Trous coronaux
The small midlatitude coronal hole in the northern hemisphere (with positive magnetic polarity) is now west side of the the solar meridian. It’s a high-speed stream may impact the solar condition near Earth in 1-2 days.
Vent solaire
Slow solar wind conditions were recorded over the past 24 hours. The solar wind speed as measured by DSCOVR ranged between 360 km/s and 500 km/s. The total interplanetary magnetic field was below 8 nT, and the Bz (north-south) component fluctuating between -7 nT and 5 nT. Slow solar wind conditions are expected for the next 24 hours. Then, influences from the high speed stream coronal hole may be observed in the solar wind parameters.
Géomagnétisme
The geomagnetic conditions over the past 24 hours were mostly quiet with some unsettled periods (NOAA-Kp and K-Bel 1-3). Mostly quiet conditions are expected in the next 24 hours. Then, unsettled to active condition may occur in response to the influences from the high speed stream coronal hole.
Niveaux de flux de protons
The greater than 10 MeV protons flux where at background levels. It is expected to be at background levels in the next 24 hours.
Flux d'électrons sur l'orbite géostationnaire
The greater than 2 MeV GOES 16 electron flux was below the 1000 pfu threshold and is expected to remain so in the next 24 hours. The 24h electron fluence was at nominal level and is expected to remain so in the next 24 hours.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 134, sur la base de 12 stations.Indices solaires pour 18 Jan 2024
| Nombre de Wolf, observé par Catania | 201 |
| Flux solaire à 10 cm | 162 |
| AK Chambon La Forêt | 014 |
| AK Wingst | 008 |
| Ap estimé | 007 |
| Nombre international de taches solaires estimé | 130 - Basé sur 21 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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| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 21/12/2025 | M1.3 |
| 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 | |
|---|---|
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