Affichage des archives de vendredi, 2 mars 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Mar 02 1230 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 Mar 2018	067	008
03 Mar 2018	067	008
04 Mar 2018	066	006

Bulletin

During last 24 hours several B-class and one C-class flare were reported. All the flaring activity originated from the Catania sunspot group 73 (NOAA AR 2007) which is presently situated rather close to the west solar limb. The strongest C1.9 flare peaked at about 11:07 UT today. The coronagraph observations show that the CMEs associated with reported flares were mostly narrow and rather slow and will therefore not arrive to the Earth. During last 24 hours solar protons remained at background level.

The Earth is presently inside the slow solar wind with the speed of about 350 km/s, and the interplanetary magnetic field magnitude is 4 nT. We might expect increase of the solar wind speed in the coming hours, associated with the coronal hole which reached central meridian in the morning of February 26. The geomagnetic conditions were quiet during last 24 hours and we expect quiet to unsettled geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 010, sur la base de 03 stations.

Indices solaires pour 01 Mar 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	014
AK Wingst	010
Ap estimé	007
Nombre international de taches solaires estimé	000 - Basé sur 13 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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