Affichage des archives de samedi, 31 octobre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Oct 31 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
31 Oct 2020	083	007
01 Nov 2020	084	007
02 Nov 2020	086	007

Bulletin

The two active regions (ARs) visible on the disk NOAA AR 2778 and 2779 have decayed further and not produced any C-class flares. Two new ARs are rotating into view over the east limb. C-class flares are possible.

No Earth directed CME was observed in the past 24 hours.

The greater than 10 MeV proton flux was at background levels over the past 24 hours. It is expected to stay at background levels for the next 24 hours. The greater than 2 MeV electrons are above the 10^3 pfu threshold. The electrons are expected to descend below the threshold.

The speed of the solar wind has been fairly constant around 430 km/s in the past 24 hours. Bz was never below -5 nT and B reached 6 nT. The solar wind speed is expected to remain low over the next 24 hours.

The geomagnetic conditions reached only unsettled levels both locally and planetary (Kp = 3 and KDourbes = 3). The CME from 26 October can arrive to the Earth tomorrow and cause up to active conditions. Otherwise quiet conditions expected in the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 025, sur la base de 19 stations.

Indices solaires pour 30 Oct 2020

Nombre de Wolf, observé par Catania	037
Flux solaire à 10 cm	080
AK Chambon La Forêt	009
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	031 - Basé sur 20 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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