Affichage des archives de dimanche, 27 septembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Sep 27 1231 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
27 Sep 2020	073	027
28 Sep 2020	073	013
29 Sep 2020	072	029

Bulletin

NOAA AR 2773 has lost its sunspot, the Sun is spotless. No flares in the past 24 hours, none expected above the B level.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay so in the next 24 hours. The greater than 2 MeV electron has passed the 10^3 pfu threshold at 03:00 UT, it was also above the threshold five hours starting at 13:30 on 26 September.

Geomagnetic conditions have reached minor storm conditions at planetary levels (Kp = 5) and active conditions locally (KDourbes = 4, but the latest data are missing). The Earth is still inside the fast solar wind from the low latitudinal extension of the northern polar coronal hole. Its influence is fading, mostly unsettled conditions expected for the next 24 hours. In about 48 hours the fast solar wind emanating from a low latitude large area coronal hole (still connected to the northern polar one) will affect the Earth and may cause up to major storm conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 13 stations.

Indices solaires pour 26 Sep 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	073
AK Chambon La Forêt	029
AK Wingst	025
Ap estimé	026
Nombre international de taches solaires estimé	000 - Basé sur 27 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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