Affichage des archives de samedi, 12 septembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Sep 12 1230 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
12 Sep 2020	069	003
13 Sep 2020	069	003
14 Sep 2020	070	003

Bulletin

The Sun was spotless. Solar activity was at very low levels and is expected to remain so.

The greater than 10 MeV proton flux was at nominal levels and is expected to remain so. The greater than 2 MeV electron flux reached moderate levels, with a maximum of 4801 pfu at 14:40UT. Despite showing signs of weakening, the electron flux has a chance to reach moderate levels again.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

The earth environment entered a sector with more enhanced solar wind, after the direction of the interplanetary magnetic field (phi angle) switched from predominantly towards the Sun (negative sector) to away from the Sun (positive sector) at 14:50UT (DSCOVR). Solar wind speed gradually increased from 280 km/s to 340 km/s around 07:30UT, ending the period with values around 330 km/s. Bz was mostly negative, varying between -5 nT (around 06:00UT) and +6 nT (around 10:30UT).

Geomagnetic activity was at quiet levels, with the estimated Kp index recording an isolated unsettled episode during the 06-09UT interval. Geomagnetic activity is expected to be mostly quiet, with an isolated unsettled interval possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 25 stations.

Indices solaires pour 11 Sep 2020

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	069
AK Chambon La Forêt	007
AK Wingst	003
Ap estimé	002
Nombre international de taches solaires estimé	000 - Basé sur 35 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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