Affichage des archives de jeudi, 13 août 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Aug 13 1235 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
13 Aug 2020	073	006
14 Aug 2020	073	007
15 Aug 2020	073	007

Bulletin

The solar activity was quiet over the past 24 hours. The X-ray flux remained below C-class level. The sunspot (NOAA-AR 2770) did not produce any significant flare and continued to decay. A new bipolar sunspot (NOAA-AR 2771) has now turned around the East limb, but does not show and significant flaring activity. The solar activity is expected to remain at low levels with a very small chance of occurring a C-class flare.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery in the last 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to stay at nominal levels for the next 24 hours. The greater than 2 MeV electron flux decreased to moderate levels over the past 24 hours and it may still reach up to moderate levels over the next 24 hours.

The Earth continued to be under the influence of the slow solar wind streams. The solar wind parameters (DSCOVR) show nominal values with the solar wind speed around 275-312 km/s, the total interplanetary magnetic field below 5 nT, and the Bz magnetic field components fluctuating between -4 nT and +2 nT. The solar wind conditions are expected to remain mostly nominal for the next days.

Geomagnetic conditions were quiet, and quiet conditions are expected for the next following day.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 012, sur la base de 19 stations.

Indices solaires pour 12 Aug 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	073
AK Chambon La Forêt	007
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	017 - Basé sur 35 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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