Affichage des archives de mercredi, 21 août 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Aug 21 1244 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
21 Aug 2019	067	006
22 Aug 2019	067	007
23 Aug 2019	067	007

Bulletin

The solar activity has been quiet over the past 24 hours. The sun is currently spotless and the X-ray flux remained below B-level. Solar activity is expected to remain at low levels for the next 24 hours.

No Earth-directed coronal mass ejections (CME) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux remained at background levels over the past 24 hours and is expected to remain at low levels.

The wind speed first reached about 430 km/s and then slowly decreased to about 380 km/s, the total interplanetary magnetic field remained below 5 nT, and the Bz component varied between -4 nT and +4 nT (as recorded by ACE). The solar wind parameters may show some minor enhancement for next period due to the possible effect of a southern coronal hole of negative polarity that was facing Earth on August 18.

Quiet geomagnetic conditions were observed. Quiet conditions are expected for the next period, with small chances of short periods of unsettled conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 20 stations.

Indices solaires pour 20 Aug 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	008
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 26 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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