Affichage des archives de mardi, 27 mai 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 May 27 1214 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
27 May 2014	103	003
28 May 2014	100	005
29 May 2014	100	007

Bulletin

There are currently 5 sunspot groups visible on the solar disk, all having simple magnetic configurations. The only region that has been actively flaring over the last 24 hours, was NOAA 2065 which has rounded the west limb. It produced all 5 C-flares of the period, the strongest a C2.1 flare peaking at 16:07UT on 26 May. No CME was associated to this event. A CME at the west limb was observed starting at 21:48UT (CACTUS), probably associated to further low-level C-class flaring in NOAA 2065. This CME was not Earth-directed. Quiet flaring conditions are expected, with a small chance on a C-class flare produced by NOAA 2065 from behind the west limb. Solar wind speed decreased from 350 to 300 km/s, with Bz varying between +2 and -2 nT. The geomagnetic field was quiet. A small coronal hole that passed the CM on 25-26 May could influence the geomagnetic field starting 29 May. Geomagnetic conditions are expected to be quiet, though locally a brief active episode on 29 May is not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 056, sur la base de 09 stations.

Indices solaires pour 26 May 2014

Nombre de Wolf, observé par Catania	092
Flux solaire à 10 cm	108
AK Chambon La Forêt	005
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	071 - Basé sur 21 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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