Affichage des archives de vendredi, 4 décembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Dec 04 1234 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
04 Dec 2015	096	009
05 Dec 2015	097	012
06 Dec 2015	098	018

Bulletin

Solar activity has been low over the past 24 hours. The largest flare was a C1.0 class flare. Newly emerged NOAA Active Region (AR) 2463 (Hax Alpha) has produced the only C class flare in the past 24 hours, a C1.0 flare peaking at 05:34 UT. Previously active AR 2458 (Bxo Beta) has moved onto the West solar limb. There was a small eruption off of the East solar limb at 19:12 UT on 2015-Dec-03, it is not expected to interact with the Earth. This eruption was possibly related to AR 2463. No Earth directed CMEs have been observed in the past 24 hours. Solar activity is expected to be low, but AR 2463 has the potential to increase activity levels. The solar wind speed has fluctuated around 400 km /s over the past 24 hours. The total magnetic field strength has remained around 7 nT, and the Bz component has fluctuated between +5 and -5 nT. Geomagnetic conditions ranged between quiet and unsettled (NOAA Kp 0-3, local K Dourbes 0-3). The small eruption on 2015-Dec-01 may have enhanced solar wind parameters and geo-activity earlier today (Kp = 3). A large positive polar coronal hole (CH), with a section extending to low latitudes, is currently located near central solar longitudes, and may increase solar wind conditions and geo- activity early on 2015-Dec-06. The Solar wind parameters are expected to be around background levels until the CH high speed stream arrives in a couple of days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 033, sur la base de 18 stations.

Indices solaires pour 03 Dec 2015

Nombre de Wolf, observé par Catania	049
Flux solaire à 10 cm	095
AK Chambon La Forêt	008
AK Wingst	003
Ap estimé	002
Nombre international de taches solaires estimé	033 - 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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