Affichage des archives de mercredi, 28 mai 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 May 28 1223 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
28 May 2014	104	006
29 May 2014	102	006
30 May 2014	100	007

Bulletin

There are currently 6 sunspot groups visible on the solar disk, all having simple magnetic configurations. NOAA 2065 produced the strongest flare from just behind the west limb. This C4 flare peaked on 27 May at 14:15UT and was associated to a jetlike CME. It had a speed of nearly 300 km/s, but was not directed to Earth. A new sunspot region developed southeast of NOAA 2073 early on 28 May. There remains a chance on a C-class flare. Solar wind speed gradually increased from 300 to 350 km/s. It is currently stable at 340 km/s, with Bz varying between +6 and -5 nT. The geomagnetic field was quiet. A small coronal hole that passed the central meridian on 25-26 May could influence the geomagnetic field starting late on 29 May. Geomagnetic conditions are expected to be quiet, though locally a brief active episode on 29-30 May is not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 059, sur la base de 07 stations.

Indices solaires pour 27 May 2014

Nombre de Wolf, observé par Catania	089
Flux solaire à 10 cm	106
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	056 - 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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