Affichage des archives de mardi, 28 janvier 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jan 28 1243 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
28 Jan 2014	153	002
29 Jan 2014	156	004
30 Jan 2014	159	001

Bulletin

Solar activity has been at active levels over the last 24 hours. 6 C- and 4 M-class flares were recorded, the strongest reached M4-level and peaked at 22:10UT in NOAA 1967. This region has nearly rounded the southeast limb and was responsible for all 10 flares. These occurred near areas of mixed magnetic polarities to the northeast and south of the big main spot, which is still very close to the limb. NOAA 1968 near the northeast limb is a lot smaller and did not produce flares. The x-ray background flux has been all day above the C1-level. Active conditions are expected to continue, with a slight chance on an X-class flare. The CMEs associated with NOAA 1967's flaring activity were directed to the east and away from Earth. Solar wind speed has been declining to values currently just above 300 km/s, with Bz varying between -5 and +5 nT. Geomagnetic conditions have been quiet and are expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 056, sur la base de 10 stations.

Indices solaires pour 27 Jan 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	144
AK Chambon La Forêt	005
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	055 - Basé sur 16 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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