Affichage des archives de dimanche, 31 mai 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 May 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 May 2020	070	010
01 Jun 2020	070	011
02 Jun 2020	069	007

Bulletin

During last 24 hours, solar flaring activity was low, without any flares reported. We expect a low level of flaring activity in the coming hours. Isolated B-class flares are possible, while C-class flares are possible but not probable. During last 24 hours there were no Earth directed CMEs and the solar protons remained at the background level.

The in situ observations show clear signatures of the solar wind originating from the negative polarity coronal hole. It is however, not possible to specify if the source was the extension of the southern polar coronal hole or the small equatorial coronal hole as they both have negative polarity. The solar wind speed is presently 400 km/s and the interplanetary magnetic field magnitude is about 4 nT. The arrival of solar wind originating from the coronal hole induced active geomagnetic conditions. The local station at Dourbes reported interval of K=4 from about 21:00 UT until the 24:00 UT on May 30, while NOAA reported only longer interval of Kp=3. We expect quiet to unsettled geomagnetic conditions in the coming hours.

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

Indices solaires pour 30 May 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	025
AK Wingst	020
Ap estimé	021
Nombre international de taches solaires estimé	000 - Basé sur 33 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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