Affichage des archives de lundi, 21 octobre 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Oct 21 1258 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
21 Oct 2013	133	009
22 Oct 2013	133	013
23 Oct 2013	133	007

Bulletin

There were five C flares on the Sun during the past 24 hours. The brightest one was a C2.0 flare from NOAA AR 11868 peaking at 12:45 UT on October 20. More C flares are expected within the next 48 hours, with a fair chance for an M flare from beta-gamma region NOAA AR 11875, which features strong flux emergence at present. Solar wind speed was nominal and varied between 280 and 360 km/s within the last 24 hours. In the same period, the Interplanetary Magnetic Field was in the range from 2 to 5 nT. Solar wind speeds are expected to increase slightly on October 21 and 22 under the influence of an expected weak coronal hole high speed stream. Geomagnetic activity was at quiet levels (K Dourbes between 0 and 3; NOAA Kp between 0 and 1) during the past 24 hours. Quiet conditions (K Dourbes < 4) are expected for October 21 till 23, with a chance for active periods due to an expected weak coronal hole high speed stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 094, sur la base de 10 stations.

Indices solaires pour 20 Oct 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	133
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	085 - Basé sur 14 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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