Affichage des archives de mardi, 25 juillet 2017
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2017 Jul 25 1230 UTC
Prévisions SIDC
Éruptions solaires
Quiet conditions (<50% probability of C-class flares)
Géomagnétisme
Quiet (A<20 and K<4)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 25 Jul 2017 | 071 | 012 |
| 26 Jul 2017 | 070 | 008 |
| 27 Jul 2017 | 070 | 007 |
Bulletin
Solar activity was at very low levels during the period. A small sunspot group seems to be developing at position N05W20. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux is somewhat enhanced above the usual nominal levels, most likely in response to the strong 23 July farside eruption from NOAA 2665. It is expected that the proton flux will remain below the proton event threshold of 10 pfu.
Quiet flaring conditions are expected.
The earth environment remained under the influence of the high speed stream (HSS) from a positive polarity coronal hole (CH). Wind speeds gradually increased from an initial value near 600 km/s to about 680 km/s by 22UT, then decreased to 570 km/s by the end of the period. Bz oscillated between -5 and +5 nT. The interplanetary magnetic field was mostly directed away from the Sun.
The geomagnetic field was at quiet to unsettled levels, with an active episode during the 21-24UT interval recorded by both Dourbes and in Kp. Mostly quiet to unsettled geomagnetic conditions are expected, with a chance on another active episode as the influence of the CH HSS is expected to gradually subside over the next 1-2 days.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 27 stations.Indices solaires pour 24 Jul 2017
| Nombre de Wolf, observé par Catania | 000 |
| Flux solaire à 10 cm | 070 |
| AK Chambon La Forêt | 016 |
| AK Wingst | 014 |
| Ap estimé | 014 |
| Nombre international de taches solaires estimé | 000 - Basé sur 28 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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