Affichage des archives de jeudi, 30 janvier 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Jan 30 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
30 Jan 2020	074	003
31 Jan 2020	074	003
01 Feb 2020	073	003

Bulletin

The solar activity was at very low levels over the past 24 hours. No significant solar flares have been observed. Catania sunspot group 28 (NOAA Active Region 2757) has continued to decay. The solar activity is expected to remain at very low levels in the next 24 hours with quiet flaring conditions. No Earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraph imagery. The greater than 10 MeV solar proton flux was at nominal levels and is expected to remain so.

In the past 24 hours the solar wind speed remained slightly enhanced in the range of 350 to 440 km/s. The total magnetic field strength was within 2-7 nT. The Bz component was mostly negative with a minimum value of -5 nT. The interplanetary magnetic field has been predominantly in the negative sector with isolated positive intervals. The solar wind conditions are expected to slowly return to nominal levels over the next 24 hours. Geomagnetic activity has been quiet to unsettled with K Dourbes and NOAA Kp indices in the ranges 1-2 and 1-3, respectively. The geomagnetic conditions are expected to be quiet over the next 24 hours with possible isolated unsettled periods.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 10 stations.

Indices solaires pour 29 Jan 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	074
AK Chambon La Forêt	013
AK Wingst	010
Ap estimé	009
Nombre international de taches solaires estimé	012 - 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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