Affichage des archives de jeudi, 27 août 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Aug 27 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
27 Aug 2020	071	006
28 Aug 2020	071	013
29 Aug 2020	071	017

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 and is expected to remain so over the next 24 hours, but with ongoing elevated Solar wind conditions a gradual increase must be expected over the next days.

Solar wind conditions showed an expected renewed enhancement with Solar wind speed reaching a maximum of 486 km/s yesterday afternoon. It is currently at around 425 km/s. Magnetic field varied in the 3-8 nT range with the Bz reaching at times down to -6.4 nT. The magnetic field phi angle was in the outward sector. Solar wind is expected to remain moderately enhanced with further enhancements likely, as a number of coronal holes are lining up.

Geomagnetic conditions were quiet to unsettled (NOAA Kp and local K Dourbes 1-3). Geomagnetic conditions are expected to be mostly quiet to unsettled, with isolated active periods not excluded and becoming increasingly more likely over the next 48 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 20 stations.

Indices solaires pour 26 Aug 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	010
AK Wingst	008
Ap estimé	007
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

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