Affichage des archives de jeudi, 24 août 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Aug 24 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
24 Aug 2023	147	007
25 Aug 2023	145	007
26 Aug 2023	143	010

Régions solaires actives et éruptions solaires

There are eight active regions visible on the disk. They all have simple alpha or beta magnetic field configuration. Only C-class flares were observed in the last 24 hours. The strongest flare was a C1.5 with peak at 23:47 UTC on 23 August, from NOAA AR 3405. For the next 24 hours, C-class flares can be expected.

Éjection de masse coronale

There were no Earth-directed Coronal Mass Ejections (CMEs) detected in the available coronagraph observations in the last 24 hours.

Vent solaire

The Earth is inside a slow solar wind stream, with speed around 430 km/s and an interplanetary magnetic field around 5 nT. The interplanetary magnetic field orientation was predominantly in the negative sector (field directed towards the Sun). Similar conditions can be expected in the next 24 hours.

Géomagnétisme

During the last 24 hours the geomagnetic conditions were quiet to unsettled (NOAA KP 1-2, K Bel 1-3). Similar conditions can be expected for the next 24 hours.

Niveaux de flux de protons

Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to remain so in the next 24 hours. The 24 hour electron fluence was at normal levels and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 087, sur la base de 13 stations.

Indices solaires pour 23 Aug 2023

Nombre de Wolf, observé par Catania	106
Flux solaire à 10 cm	147
AK Chambon La Forêt	007
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	105 - Basé sur 28 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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