Affichage des archives de mardi, 20 août 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Aug 20 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
20 Aug 2013	128	014
21 Aug 2013	128	020
22 Aug 2013	132	007

Bulletin

Flaring was eruptive featuring several C-class flares from NOAA active regions 1818, 1819 and 1825. Two CMEs were observed in the past 24 hours. The CME observed by LASCO/C2 on 19 August at 23h12 UT seems backsided and is not geo-effective. The CME observed on 20 August at 8h12 UT is associated to a large filament eruption. The CME travels with a speed of 600 km/s calculated based on STEREO data and goes mostly south of the ecliptic plane. There is a chance that Earth will be affected by the northern part of the CME structure, arriving late 23 August, possibly resulting in active to minor storm conditions. Current geomagnetic conditions are quiet to unsettled. Periods of enhanced geomagnetic activity are possible (unsettled to active) for the next 48 hours, in relation to the arrival of the equatorial coronal hole high speed stream and the CME of August 17.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 084, sur la base de 14 stations.

Indices solaires pour 19 Aug 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	128
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	091 - Basé sur 24 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