Affichage des archives de jeudi, 18 octobre 2018
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2018 Oct 18 1230 UTC
Prévisions SIDC
Éruptions solaires
Quiet conditions (<50% probability of C-class flares)
Géomagnétisme
Active conditions expected (A>=20 or K=4)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 18 Oct 2018 | 070 | 005 |
| 19 Oct 2018 | 070 | 014 |
| 20 Oct 2018 | 070 | 011 |
Bulletin
There is one active region visible on the solar disk, NOAA 2725 with alpha magnetic field configuration. No C-class flares in past 24 h. Solar activity is expected to remain at low levels.
No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.
The solar wind speed is at 415 km/s with interplanetary magnetic fields of 3 nT. Geomagnetic conditions have been quiet. The fast solar wind associated with the low latitudinal extension of the northern polar coronal hole (positive polarity) may arrive to the Earth on October 19-20, causing active geomagnetic conditions. Due to its latitude, the high speed stream may pass north of the Earth and leave it unaffected (quiet conditions expected in that case).
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 22 stations.Indices solaires pour 17 Oct 2018
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 070 |
| AK Chambon La Forêt | 005 |
| AK Wingst | 002 |
| Ap estimé | 002 |
| Nombre international de taches solaires estimé | 011 - Basé sur 20 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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| Dernier orage géomagnétique | 22/12/2025 | Kp5 (G1) |
| Jours sans taches solaires | |
|---|---|
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