Affichage des archives de mardi, 20 août 2024
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2024 Aug 20 1232 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 | |
|---|---|---|
| 20 Aug 2024 | 240 | 006 |
| 21 Aug 2024 | 235 | 007 |
| 22 Aug 2024 | 235 | 008 |
Régions solaires actives et éruptions solaires
Solar flaring activity was moderate over the past 24 hours. The largest flare was a M3.7-flare, with peak time 21:52 UTC on August 19 2024, from NOAA AR 3796 (beta-gamma). There are currently 11 numbered active regions on the visible disk. NOAA AR 3784 is the most complex AR (beta-gamma-delta). The solar flaring activity is expected to be at moderate levels for the next 24 hours with C-class flares expected and M-class flares probable and a chance of X-class flares.
Éjection de masse coronale
No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.
Trous coronaux
A small negative polarity mid-latitude coronal hole started to cross the central meridian in the northern hemisphere. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth on August 23.
Vent solaire
The solar wind at the Earth remained slow over the last 24 hours. The solar wind speed decreased from around 400 km/s to around 350 km/s and the interplanetary magnetic field was stable around 7nT. The Bz reached a minimum value of -6nT. Slow solar wind conditions are expected in the next 24h.
Géomagnétisme
Geomagnetic conditions were globally and locally quiet to unsettled (Kp 3+ and 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 remained below the 1000 pfu alert threshold, and 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 : 221, sur la base de 22 stations.Indices solaires pour 19 Aug 2024
| Nombre de Wolf, observé par Catania | 204 |
| Flux solaire à 10 cm | 239 |
| AK Chambon La Forêt | 024 |
| AK Wingst | 010 |
| Ap estimé | 010 |
| Nombre international de taches solaires estimé | 232 - Basé sur 21 stations |
Résumé des événements marquants
| Jour | Commencer | Max | Fin | Loc | Force | OP | 10cm | Catania/NOAA | Types de sursaut radio |
|---|---|---|---|---|---|---|---|---|---|
| 19 | 2141 | 2152 | 2202 | S03E56 | M3.7 | 1N | 58/3796 | ||
| 20 | 0437 | 0448 | 0454 | ---- | M1.2 | 58/3796 | VI/1 |
Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive
Toutes les heures sont indiquées en UTC
Dernières nouvelles
M8.1 solar flare with earth-directed CME
X1.9 solar flare, Coronal hole faces Earth
X4.0 solar flare
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 | 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 |