Affichage des archives de mercredi, 2 septembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Sep 02 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
02 Sep 2020	070	010
03 Sep 2020	070	009
04 Sep 2020	070	004

Bulletin

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

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

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 electron flux exceeded the threshold value of 1000 pfu for much of the reporting period. It is expected to continue to be at high levels during the coming days.

The solar wind speed showed a decreasing trend, reducing from 640 km/s at the start of the period to around 500 km/s by the end. The total magnetic field remained below 5 nT. Bz was predominantly negative with a minimum value of -4 nT. The direction of the interplanetary magnetic field (phi angle) was initially directed away from the Sun (positive sector) but switched to the negative sector for an extended period between 14 to 23 UT Sep 01 and then continued to oscillate between the two sectors. Although still enhanced, the solar wind conditions are expected to slowly return to nominal conditions from Sep 03 as the influence from the high-speed stream reduces.

Geomagnetic conditions were at quiet to active levels (K Dourbes and NOAA Kp recorded values of 2-4 and 2-3, respectively). Geomagnetic conditions are expected to be quiet to unsettled during the next 24 hours with a possibility of a further isolated active interval.

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

Indices solaires pour 01 Sep 2020

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	070
AK Chambon La Forêt	026
AK Wingst	///
Ap estimé	021
Nombre international de taches solaires estimé	000 - Basé sur 29 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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