Affichage des archives de mardi, 11 avril 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Apr 11 1337 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
11 Apr 2017	075	016
12 Apr 2017	074	012
13 Apr 2017	075	009

Bulletin

Solar activity was at very low levels during the period. Low-level B-class flaring was observed from a new active region at the east limb NOAA 2650 (B4.8, B1.6, B3.9, B1.3, B1.3). The filament eruption from the NE quadrant of the Sun is associated with a CME first observed in LASCO-C2 coronograph imagery at 23:28 UT 10 April. WSA/Enlil modeling determined a possible glancing blow from the CME, with arrival on 15 April. The greater than 10MeV proton flux was at nominal levels. Quiet flaring conditions are expected, with a chance on an isolated C-class flare. Solar wind parameters were at nominal levels. Solar wind speed was around 425 km/s. Bz fluctuated between -5.8 and +5.2 nT from 00UT today. A weak connection to an isolated, positive polarity coronal hole is expected to enhance the solar wind conditions slightly more today. The geomagnetic field was at quiet to active levels (Kp NOAA index: 1-4, K Dourbes index: 1-3). Geomagnetic conditions are expected to be quiet to active.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 014, sur la base de 25 stations.

Indices solaires pour 10 Apr 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	074
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	005
Nombre international de taches solaires estimé	014 - Basé sur 31 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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