Affichage des archives de dimanche, 24 septembre 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Sep 24 1231 UTC

Prévisions SIDC

Éruptions solaires

M-class flares expected (probability >=50%)

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
24 Sep 2023	176	019
25 Sep 2023	176	022
26 Sep 2023	176	007

Régions solaires actives et éruptions solaires

There are twelve active regions visible on the disk. There were two M-class flares in the last 24 hours, the strongest one was an M4.4 from NOAA AR 3435 (beta magnetic field configuration), peaking at 03:28 UTC. The other M-class flare was produced by the new NOAA ARs 3435 (beta magnetic field configuration). NOAA AR 3441 has a beta-gamma magnetic field configuration and NOAA AR 3443 beta- delta, all the other regions have simpler alpha or beta magnetic field configuration. More M-class flares can be expected in the next 24 hours, X-class flares are possible.

Éjection de masse coronale

No Earth directed CMEs were observed in the last 24 hours.

Vent solaire

In the last 24 hours, the solar wind speed at the Earth has been around 320 km/s and the interplanetary magnetic field around 5 nT. The CMEs from 20 and 21 September can arrive to the Earth in the next 24 hours, and change the solar wind conditions.

Géomagnétisme

During the last 24 hours the geomagnetic conditions have been quiet to unsettled, both globally and locally (NOAA KP 3, K_Bel 3). Geomagnetic conditions are expected to reach minor to moderate storm levels if the expected CMEs from 21 and 22 September arrive to the Earth.

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 was above the 1000 pfu, as measured by GOES 16. It has gone down in the last hours, but it may increase over the threshold again in the next 24 hours. The 24 hour electron fluence was at moderate levels, it is expected to stay at those levels for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 189, sur la base de 20 stations.

Indices solaires pour 23 Sep 2023

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	173
AK Chambon La Forêt	014
AK Wingst	010
Ap estimé	011
Nombre international de taches solaires estimé	210 - Basé sur 17 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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