Affichage des archives de mercredi, 27 mai 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 May 27 1231 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
27 May 2015	098	006
28 May 2015	103	016
29 May 2015	108	008

Bulletin

Solar activity once again was very low. No significant flares were observed. Activity was limited to a partial eruption of the filament in the SW quadrant (from 13:26 UT on) and a small filament eruption near plage 2351 (from 22:00 UT on). A few regions are currently at the East limb that could introduce some activity. No Earth-bound CMEs were observed yet.

The solar wind speed remains low in the range of 280-360 km/s. The magnitude of the magnetic field was maximally 12 nT. A sector boundary crossing occurred around 16:00 UT on May 26 going from a negative to a positive orientation, which seems to be changing again from 10:30 UT. Geomagnetic conditions are quiet (K <4) and are expected to remain so till the expected coronal hole high speed stream arrives on May 28.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 017, sur la base de 18 stations.

Indices solaires pour 26 May 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	095
AK Chambon La Forêt	011
AK Wingst	010
Ap estimé	009
Nombre international de taches solaires estimé	039 - Basé sur 29 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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