Affichage des archives de mardi, 29 août 2017
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2017 Aug 29 1238 UTC
Prévisions SIDC
Éruptions solaires
C-class flares expected, (probability >=50%)
Géomagnétisme
Active conditions expected (A>=20 or K=4)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 29 Aug 2017 | 083 | 006 |
| 30 Aug 2017 | 084 | 005 |
| 31 Aug 2017 | 085 | 040 |
Bulletin
Over the past 24 hours, the solar activity remained at the low level. The magnetic configuration of Catania group 43 (NOAA region 2672) is still simplifying and has not produced any flare. A region listed as Catania group 47 is rotation from behind the East solar limb, and it shows some activity. It produced several narrow CMEs and one C3-class flare (peak-time at 0:3:00UT, August, 29). This will enhance the activity levels in the coming days.
No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery and the solar protons remains at background level.
The Earth is presently inside the slow solar wind with the speed below 400 km/s, the interplanetary magnetic field magnitude below 10 nT, and the Bz component being mainly negative around -5 nT. The fast solar wind associated with the coronal hole currently facing Earth is expected to arrive on August, 31 around noon UT time.
The geomagnetic conditions are presently very quiet with Kp (NOAA) and local K (Dourbes) indexes ranging between 1-2. The geomagnetic conditions are expected to remain low until August, 31 when the fast solar will reach Earth.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 035, sur la base de 25 stations.Indices solaires pour 28 Aug 2017
| Nombre de Wolf, observé par Catania | 025 |
| Flux solaire à 10 cm | 082 |
| AK Chambon La Forêt | 005 |
| AK Wingst | 003 |
| Ap estimé | 002 |
| Nombre international de taches solaires estimé | 020 - Basé sur 34 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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