Affichage des archives de dimanche, 26 mai 2024
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2024 May 26 1231 UTC
Prévisions SIDC
Éruptions solaires
C-class flares expected, (probability >=50%)
Géomagnétisme
Quiet (A<20 and K<4)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 26 May 2024 | 152 | 007 |
| 27 May 2024 | 154 | 007 |
| 28 May 2024 | 156 | 007 |
Régions solaires actives et éruptions solaires
There are seven visible ARs on the solar disk. Solar activity has been low, only C-class flaring in the last 24 hours. The region that was creating most of the activity, NOAA AR 3679, has now rotated out of view. The strongest flare was a C5.3 one peaking at 09:36 UTC, from NOAA AR 3691. This is the AR that caused several X-flares in the last rotation. Still showing a beta-gamma-delta magnetic field configuration, this AR has potential for strong flares, but seems so far calmer than in the previous rotation. More C-class flares can be expected and M-class flares are possible.
Éjection de masse coronale
No Earth directed CME has been observed in the last 24 hours.
Vent solaire
The solar wind at the Earth is slow, with speeds around 360 km/s and interplanetary magnetic field around 6 nT. Similar conditions can be expected for the next 24 hours. There are low chances of a glancing blow of the CME from 23 May after that.
Géomagnétisme
Geomagnetic conditions have been mostly quiet both at planetary and local levels (Kp and K_Bel up to 3).Similar conditions can be expected in the next 24 hours. A glancing blow from the 23 May CME (with low chances of arrival) may create active conditions.
Niveaux de flux de protons
The 10 MeV GOES-18 proton flux was below threshold in the past 24 hours and is expected to remain so in the next 24 hours.
Flux d'électrons sur l'orbite géostationnaire
The greater than 2 MeV electron flux from GOES 16 was below the threshold level in the last 24 hours. It is expected to remain below the threshold during the next 24 hours. The electron fluence was at normal levels for the last 24 hours and is expected to remain so.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 113, sur la base de 16 stations.
Indices solaires pour 25 May 2024
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 152 |
| AK Chambon La Forêt | 010 |
| AK Wingst | 009 |
| Ap estimé | 007 |
| Nombre international de taches solaires estimé | 104 - Basé sur 26 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 | 31/12/2025 | M7.11 |
| Dernier orage géomagnétique | 02/01/2026 | Kp5 (G1) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| décembre 2025 | 124 +32.2 |
| janvier 2026 | 119.3 -4.8 |
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