Affichage des archives de vendredi, 8 juillet 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Jul 08 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
08 Jul 2016	090	028
09 Jul 2016	095	010
10 Jul 2016	100	010

Bulletin

Three new active regions turned to the front side of the solar disk. Catania number 6 (no NOAA number yet), located near N10E90, did produce a C2.7 flare, peaking at 0:56 UT. The other regions Catania number 4 and 5 (NOAA AR 2562) did not create any flaring. Flaring activity at the C-level is expected, especially from Catania number 6, which produced several flares while being on the backside. No Earth-directed CMEs were observed.

Solar wind observations of ACE do indicate the arrival of a high speed stream (HSS) emanating from the positive polarity elongated coronal hole (currently stretching N0W60 to N40W10). The solar wind speed has obtained values above 600 km/s, while the magnetic field magnitude peaked at above 15 nT, with a fluctuating north-south component. Geomagnetic conditions reached active levels (K=4, locally at Dourbes, and globally for Kp at Potzdam) and even storm levels (K=5, NOAA estimated global Kp). Geomagnetic disturbances are expected at active to storm levels for at least the next 24 hours, before returning to quiet levels. In addition, another large coronal hole (closely following the prior one) is about to cross the central meridian, increasing chances for more activity within about 3 days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 040, sur la base de 17 stations.

Indices solaires pour 07 Jul 2016

Nombre de Wolf, observé par Catania	053
Flux solaire à 10 cm	083
AK Chambon La Forêt	034
AK Wingst	026
Ap estimé	026
Nombre international de taches solaires estimé	026 - Basé sur 32 stations

Résumé des événements marquants

Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive

Toutes les heures sont indiquées en UTC

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