Affichage des archives de mardi, 16 juillet 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jul 16 1230 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
16 Jul 2019	067	005
17 Jul 2019	067	008
18 Jul 2019	068	005

Bulletin

Solar activity was at very low levels. The Sun remains spotless and no flares have been observed. No Earth directed coronal mass ejections (CME) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain at very low levels.

The solar wind speed varied between approximately 370 and 500 km/s (ACE). Bz varied between -4 and +4 nT. The interplanetary magnetic field was predominantly directed away from the Sun (positive sector). Quiet to unsettled geomagnetic conditions were observed, with the Kp index (NOAA) ranging between 0-2 and the local K index (Dourbes) ranging between 0-3 over the past 24 hours.

Quiet to unsettled geomagnetic conditions are expected due to the arrival of the solar wind stream associated with the negative polarity equatorial coronal hole, which began to transverse the central meridian on July 11.

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

Indices solaires pour 15 Jul 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	014
AK Wingst	011
Ap estimé	011
Nombre international de taches solaires estimé	000 - Basé sur 20 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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