Affichage des archives de dimanche, 2 octobre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Oct 02 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
02 Oct 2016	079	018
03 Oct 2016	078	010
04 Oct 2016	076	010

Bulletin

There are presently no active regions on the visible side of the Sun, and accordingly solar activity is low (without C-class flares reported). We expect low solar activity to persist in the coming hours. The CME, first seen in the SOHO/LASCO C2 field of view at about 14:24 UT on October 1, was associated with the EUV wave and coronal dimming. The bulk of the CME mass was in the north-east direction, and the CME had angular width of about 90 degrees and projected speed of 400 km/s (as reported by the CACTus software package). This CME will not arrive at the Earth.

The solar wind speed is slowly decreasing and it is presently about 500 km/s. The interplanetary magnetic field magnitude is stable having value of about 5 nT. Due to the long interval of the negative value of the Bz component of the interplanetary magnetic field and the fast solar wind, active geomagnetic conditions were reported (around 23:40 UT) on October 1. The local station at Dourbes reported K=4, and NOAA reported Kp=4. We expect quiet to unsettled geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 008, sur la base de 17 stations.

Indices solaires pour 01 Oct 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	081
AK Chambon La Forêt	037
AK Wingst	023
Ap estimé	025
Nombre international de taches solaires estimé	000 - Basé sur 23 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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