Affichage des archives de lundi, 18 mai 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 May 18 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
18 May 2020	070	007
19 May 2020	071	008
20 May 2020	071	003

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. Solar activity is expected to remain at very low levels.

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

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to stay at nominal 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 rise to moderate levels for the next 24 hours as a response to the Coronal Hole (CH) crossing Central Meridian on May 15.

The solar wind speed near Earth oscillated between the values of 285 to 330 km/s (DSCOVR). The Interplanetary Magnetic Field (IMF) was predominantly oriented towards the Earth (phi angle in the positive sector). Bz varied between -3 and +4 nT. The magnitude of the magnetic field varied between 1 and 5 nT. For the next 24 hours the solar wind speed is expected to increase late May 18 due to the expected arrival of the high speed stream associated with the CH crossing Central Meridian on May 15.

Quiet geomagnetic conditions were registered for the past 24 hours (K Dourbes recorded values 0-2 and NOAA Kp 0-1). Quiet to unsettled (K Dourbes = 3) geomagnetic conditions are expected for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 27 stations.

Indices solaires pour 17 May 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	///
AK Wingst	004
Ap estimé	003
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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