Affichage des archives de lundi, 20 janvier 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Jan 20 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
20 Jan 2020	072	005
21 Jan 2020	072	008
22 Jan 2020	071	004

Bulletin

Solar activity was at very low levels. On disk signatures of an eruption were observed at around 18:30 UT on Jan 19 from a newly emerged region in the north east of the solar disk, as yet unnumbered by NOAA. The observed region produced a small flare and coronal dimming indicating the existence of a possible associated Coronal Mass Ejection (CME). However, no coronagraph images are currently available to confirm the existence or direction of the CME. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

The solar wind speed fluctuated between from 280 km/s to 350 km/s (ACE). The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector). Bz varied between -3 and +3 nT.

Geomagnetic activity was quiet, with the Kp index (NOAA) and the local k index (Dourbes) recording values of between 0 and 1. Quiet to unsettled conditions are expected on Jan 20-22 with possible isolated active conditions on Jan 20, due to the combined influence from the patchy negative polarity coronal hole that traversed the central meridian on Jan 16 and the CME that was observed on Jan 14.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 15 stations.

Indices solaires pour 19 Jan 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	003
AK Wingst	001
Ap estimé	001
Nombre international de taches solaires estimé	000 - Basé sur 31 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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