Affichage des archives de lundi, 23 mars 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Mar 23 1243 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
23 Mar 2015	122	017
24 Mar 2015	127	008
25 Mar 2015	130	008

Bulletin

Solar activity is low, and the strongest C-class flare reported in the last 24 hours was the C3.6 flare (peaked at 09:11 UT). The flare originated from the active region behind the east solar limb (at about S20). Out of six currently numbered sunspot groups visible on the solar disc, NOAA AR 2305 is the only one with the complex configuration of the photospheric magnetic field (beta-gamma). Therefore, this active region is the most probably source of the flaring activity in the following 24 hours. We expect C-class flares and, possibly but not very probably, also an isolated M-class flare. No Earth directed CMEs were observed during last 24 hours. The Earth is currently inside a fast solar wind with the speed of about 620 km/s. The interplanetary magnetic field, which was elevated due to the possible arrival of the interplanetary coronal mass ejection late on March 21, is slowly decreasing during last 24 hours and its current value is about 8 nT. Due to the short intervals of negative value of the Bz component of the interplanetary magnetic field (up to about -8 nT) active geomagnetic conditions were reported this morning (Dourbes reported K=4, and NOAA reported Kp=5). We expect unsettled to active geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 075, sur la base de 13 stations.

Indices solaires pour 22 Mar 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	122
AK Chambon La Forêt	033
AK Wingst	020
Ap estimé	021
Nombre international de taches solaires estimé	062 - 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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