Affichage des archives de mercredi, 26 juillet 2017
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2017 Jul 26 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 | |
|---|---|---|
| 26 Jul 2017 | 070 | 014 |
| 27 Jul 2017 | 070 | 014 |
| 28 Jul 2017 | 070 | 008 |
Bulletin
Solar activity was at very low levels during the period. Sunspot region NOAA 2668 is decaying and barely visible. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux reached a maximum of about 2 pfu (i.e. below the 10 pfu event threshold) around 21-22UT, and is now gradually declining.
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 570 km/s to about 660 km/s by 03UT, then decreased to 590 km/s by the end of the period (DSCOVR). Bz oscillated between -5 and +7 nT. The interplanetary magnetic field was mostly directed away from the Sun, with a "towards" sector during the 14-22UT interval.
The geomagnetic field was at quiet to unsettled levels, with an active episode during the 06-09UT interval recorded by both Dourbes and in Kp. Mostly quiet to unsettled geomagnetic conditions are expected, with a chance on another active episode under the persistent influence of the CH HSS.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.Indices solaires pour 25 Jul 2017
| Nombre de Wolf, observé par Catania | 000 |
| Flux solaire à 10 cm | 070 |
| AK Chambon La Forêt | 019 |
| AK Wingst | 013 |
| Ap estimé | 013 |
| Nombre international de taches solaires estimé | 000 - Basé sur 32 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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