Affichage des archives de mercredi, 26 juin 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Jun 26 1231 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
26 Jun 2013	104	007
27 Jun 2013	104	007
28 Jun 2013	104	007

Bulletin

Solar activity has been eruptive during the past 24 hours, featuring two low C flares from NOAA AR 11775 and 11776. More C flares are possible within the next 48 hours, with a slight chance for an M flare. The influence of the coronal hole high speed stream on the solar wind is gradually weakening. During the past 24 hours, solar wind speeds have decreased from about 520 to 440 km/s, while the IMF went further down from 4 to 2 nT. The solar wind speed is expected to continue its descent until June 28, when we will likely see the effects of another coronal hole high speed stream. Geomagnetic activity was at quiet levels (K Dourbes between 1 and 3; NOAA Kp between 1 and 2) during the past 24 hours. Quiet conditions (K Dourbes < 4) are expected for June 26 till the first half of June 28. On the second half of June 28, active periods (K Dourbes=4) are possible as a consequence of the expected arrival at Earth of a new coronal hole high spead stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 041, sur la base de 11 stations.

Indices solaires pour 25 Jun 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	109
AK Chambon La Forêt	009
AK Wingst	009
Ap estimé	009
Nombre international de taches solaires estimé	052 - Basé sur 20 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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