Affichage des archives de vendredi, 15 juillet 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Jul 15 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
15 Jul 2016	095	013
16 Jul 2016	094	015
17 Jul 2016	093	016

Bulletin

Active Region (AR) 2567 produced the largest flare, a B7.4 class flare peaking at 05:12 UT, AR 2565 (Macintosh class:Cao; Mag. type:Beta) has shown some evidence of flux emergence and cancellation in HMI magnetogram observations, this may increase flaring activity. All other ARs appear relatively stable. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours. There is currently a large +ve polarity trans-equatorial northern polar coronal hole in the Western hemisphere. Solar activity is expected to remain low over the next 24 hours, with a reasonable probability of C-class flares and a low probability of M-class flares.

The solar wind speed jumped from around around 550 km/s to 650 km/s at 21:00 UT yesterday. The total magnetic field strength has remained around 5 nT. The Bz component fluctuated around 0 nT, ranging between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 2-3 (NOAA) and local K index 2-3 (Dourbes) over the past 24 hours. The increased solar wind speed reflects the arrival of a High Speed Stream (HSS) created by the large northern polar coronal hole in the Western hemisphere, if coupled with negative Bz we may experience enhanced geomagnetic activity over the next few days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 080, sur la base de 23 stations.

Indices solaires pour 14 Jul 2016

Nombre de Wolf, observé par Catania	111
Flux solaire à 10 cm	095
AK Chambon La Forêt	020
AK Wingst	015
Ap estimé	014
Nombre international de taches solaires estimé	057 - Basé sur 30 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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