Affichage des archives de dimanche, 31 janvier 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Jan 31 1231 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
31 Jan 2016	103	013
01 Feb 2016	101	012
02 Feb 2016	100	010

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a B9.1 class flare. NOAA Active Region (AR) 2488 (Macintosh class:Cao; Mag. type:Beta) has been most active. AR 2488 has moved on to the West limb. ARs 2489 (Dho; Beta) and 2490 have shown some low levels of activity, and exhibited small amounts of flux emergence in HMI observations. There was a filament eruption around 15:00 UT yesterday (30-Jan-2016) near the Eastern limb, the resulting CME is not expected to interact with the Earth system. No Earth directed Coronal Mass Ejections (CMEs) have been detected. A positive polar coronal hole is currently positioned in the Western hemisphere of the Sun. Solar activity is expected to remain low over the next 24 hours with a high probability of C-class flares and a low probability of M-class flares. The solar wind speed has fluctuated between 260 and 300 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 4 and 10 nT. The Bz component was largely negative, fluctuating between 0 and -7 nT. Geomagnetic conditions ranged between Kp index 0-3 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. A positive polar coronal hole is currently positioned in the Western hemisphere of the Sun and the resulting high-speed stream (HSS) may enhance solar wind speeds.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 027, sur la base de 12 stations.

Indices solaires pour 30 Jan 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	105
AK Chambon La Forêt	006
AK Wingst	001
Ap estimé	001
Nombre international de taches solaires estimé	034 - Basé sur 15 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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