Affichage des archives de samedi, 29 août 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Aug 29 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
29 Aug 2020	070	025
30 Aug 2020	070	031
31 Aug 2020	070	031

Bulletin

Solar X-ray flux has been below background (B) level throughout the period. There are no spotted regions on disc and X-ray flux is expected to remain at or below background (B) values.

There were no Earth directed coronal mass ejections observed in coronagraph data.

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 was at nominal levels over the past 24 hours. A gradual increase is expected over the next days related to ongoing elevated Solar wind conditions.

Solar wind speed was in the 400-450 km/s range until around 16UT when a gradual increase set in to currently above 500 km/s. A peak of 535 km/s was reached during the period. The total magnetic field peaked at 10.5 nT around 16UT and gradually decreased to under 5nT currently. The Bz component reached a maximum southward value of -8.6 nT. The magnetic field phi angle was predominantly in the away sector (+) . The moderately high speed stream conditions are expected to last over the next 24-48 hours with further increases possible due to a number of positive polarity coronal holes.

Geomagnetic conditions saw an episode of active conditions (K Dourbes 4) reaching minor geomagnetic storm levels globally (NOAA Kp 5) at the onset of the Solar wind enhancements and remained unsettled to active. Geomagnetic conditions are expected to remain unsettled with active periods over the next 48 hours and isolated geomagnetic storm periods possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 15 stations.

Indices solaires pour 28 Aug 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	028
AK Wingst	012
Ap estimé	013
Nombre international de taches solaires estimé	000 - Basé sur 22 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

<< Aller à l'aperçu quotidien