Affichage des archives de jeudi, 3 août 2017
Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC
Publié: 2017 Aug 03 1230 UTC
Prévisions SIDC
Éruptions solaires
C-class flares expected, (probability >=50%)
Géomagnétisme
Minor storm expected (A>=30 or K=5)
Moniteur de Flux de Proton
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 03 Aug 2017 | 074 | 006 |
| 04 Aug 2017 | 074 | 029 |
| 05 Aug 2017 | 074 | 017 |
Bulletin
Beta region NOAA 2670 (= returning NOAA 2665) produced a few low B flares and a B9.4 flare peaking at 23:59 UT on August 2. C flares from NOAA 2670 are possible in the next 48 hours, with a chance for an M flare. No earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. In the past 24 hours, solar wind speed registered by DSCOVR gradually decreased from about 425 to 360 km/s. The Interplanetary Magnetic Field (IMF) was mainly oriented towards the Sun, and its magnitude varied between about 1 and 7 nT. Bz varied between about -4 and 6 nT and was only briefly below -5 nT between 12h and 13h on August 2. Quiet geomagnetic conditions (K Dourbes between 1 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Quiet to unsettled solar wind conditions (K Dourbes < 4) are expected on August 3. Active to minor storm conditions (K Dourbes = 4 to 5) are possible on August 4 and 5, with the expected arrival of a high speed stream from a large positive coronal hole extending from the north pole to the equatorial region.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 012, sur la base de 26 stations.Indices solaires pour 02 Aug 2017
| Nombre de Wolf, observé par Catania | 012 |
| Flux solaire à 10 cm | 074 |
| AK Chambon La Forêt | 007 |
| AK Wingst | 006 |
| Ap estimé | 004 |
| Nombre international de taches solaires estimé | 013 - 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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