Affichage des archives de mercredi, 20 mars 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Mar 20 1147 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor geomagnetic storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
20 Mar 2013	104	012
21 Mar 2013	102	029
22 Mar 2013	102	013

Bulletin

Solar flaring activity is at C-class level with a C5.5 flare as main event from NOAA AR1698, which is behind the west limb now. In the next few hours solar activity is expected to be quiet. Small C-class flares are likely with NOAA AR1692 (and AR1695) being the biggest candidate as source region. The last 12 hours the solar wind speed was between 400 and 500 km/s, now being 470 km/s. The Bz-component of the interplanetary magnetic field is fluctuating between -5 and +5 nT. Geomagnetic conditions are quiet to unsettled and are expected to increase within the next 24 to 48 hours to active to minor storm levels, due to the expected arrival of a halo CME of Sunday March 17 at 15h48 UT. From analysis of new data, the CME measured yesterday at 8h UT is related to the NOAA AR 1698 and will probably not arrive at Earth.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 030, sur la base de 04 stations.

Indices solaires pour 19 Mar 2013

Nombre de Wolf, observé par Catania	096
Flux solaire à 10 cm	110
AK Chambon La Forêt	012
AK Wingst	008
Ap estimé	005
Nombre international de taches solaires estimé	047 - 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

<< Aller à l'aperçu quotidien