Affichage des archives de lundi, 16 décembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Dec 16 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
16 Dec 2019	070	007
17 Dec 2019	070	008
18 Dec 2019	070	029

Bulletin

Solar X ray flux remained below B level throughout the period. There are no active regions on disk and X-ray flux is expected to remain at background levels.

No Earth-directed CME's were detected in coronagraph images.

Solar high energy proton fluxes were at background levels and are expected to remain so.

Solar wind speed reached a maximum of around 420 km/s before declining to current values around 370 km/s. Total magnetic field was around a nominal 5nT with the phi angle mostly in the negative sector. Solar wind conditions are expected to remain nominal over the next 24 hour and then are expected to become enhanced from late December 17 or early December 18 under the influence of the equatorial positive polarity coronal hole.

Geomagnetic conditions were quiet to unsettled with both local K Dourbes and NOAA Kp reaching an isolated period of K=3. Geomagnetic conditions are expected to remain quiet to unsettled over the next 24 hours with later unsettled to active conditions from December 18 onwards, with also a possibility of isolated minor geomagnetic storm episodes.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 07 stations.

Indices solaires pour 15 Dec 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	008
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 25 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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