Affichage des archives de samedi, 30 septembre 2017
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2017 Sep 30 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 | |
|---|---|---|
| 30 Sep 2017 | 090 | 021 |
| 01 Oct 2017 | 091 | 011 |
| 02 Oct 2017 | 092 | 006 |
Bulletin
Over the past 24 hours solar activity has been low. No significant flares have been recorded. Catania group 56 (NOAA AR region 2682) increased its magnetic complexity and produced two B class flares peaking at 13:31 and 14:32 UT yesterday (29-Sep-2017). No Earth directed Coronal Mass Ejections (CMEs) have been detected in coronograph observations. Integral proton flux for protons with energies above 10 MeV remained at background level over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with some probability of C-class flares. The Earth remains under influence of the fast solar wind stream. The solar wind speed is slowly decreasing from 640 km/s till 510 km/s over the past 24 hours. The interplanetary magnetic field magnitude remained between 4 and 5 nT, and the Bz component fluctuating between -4.5 and 4.5 nT being mainly negative. Disturbed geomagnetic conditions were observed with Kp-NOAA up to 4 (K-Dourbes up to 3) due to the fast solar wind and the southward Bz component of the interplanetary magnetic field over several consecutive intervals. The geomagnetic conditions are expected to vary between unsettled to active conditions today, in particular, if the Bz component stays negative for longer periods. Tomorrow (1-Oct-2017) we expect quiet to unsettled geomagnetic conditions as the high speed stream will decrease.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 047, sur la base de 09 stations.Indices solaires pour 29 Sep 2017
| Nombre de Wolf, observé par Catania | 052 |
| Flux solaire à 10 cm | 090 |
| AK Chambon La Forêt | 020 |
| AK Wingst | 014 |
| Ap estimé | 015 |
| Nombre international de taches solaires estimé | 046 - Basé sur 29 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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