Affichage des archives de dimanche, 3 octobre 2021

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2021 Oct 03 1212 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
03 Oct 2021	087	007
04 Oct 2021	085	007
05 Oct 2021	083	007

Bulletin

Two active regions (ARs) present on the visible solar disk. NOAA AR 2877 (beta magnetic field configuration) and 2880 (also beta). The former produced two C-class flare during the last 24 hours, with the strongest being a C1.8 flare peaking at 07:22 UT. Similar solar activity can be expected for the next 24 hours.

No Earth directed CMEs have been observed in the last 24 hours.

The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay there in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, no changes expected for the next 24 hours. The electron fluence was at normal levels over the past 24 hours, no changes expected over the next 24 hours.

The solar wind speed at the Earth has been around 420 km/s in the past 24 h, with magnetic field magnitudes around 5 nT. Similar conditions can be expected for the next 24 hours.

Geomagnetic conditions have been quiet to unsettled in the last 24 hours (NOAA Kp 0-2 and K Dourbes 0-3). Similar conditions are expected for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 021, sur la base de 09 stations.

Indices solaires pour 02 Oct 2021

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	087
AK Chambon La Forêt	013
AK Wingst	007
Ap estimé	008
Nombre international de taches solaires estimé	029 - Basé sur 14 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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