Affichage des archives de lundi, 21 octobre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Oct 21 1235 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
21 Oct 2019	066	015
22 Oct 2019	066	018
23 Oct 2019	066	007

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.

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

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

A recurrent equatorial positive polarity coronal hole is about to rotate across the central meridian and is expected to influence solar wind parameters later this week.

Solar wind conditions were nominal. Solar wind speed was between 320-360 km/s and total magnetic field was below 6.5nT with a variable Bz. The magnetic field phi angle switched to the negative sector after 18UT but was unstable with regular excursions back into the positive sector. Solar wind conditions are expected to become slightly enhanced under the elevated solar wind speeds associated to a negative polarity coronal hole.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-3 and local K Dourbes 0-3). Geomagnetic conditions are expected to be unsettled with active periods possible over the next 24-48 hours under the expected enhanced Solar wind conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 11 stations.

Indices solaires pour 20 Oct 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	065
AK Chambon La Forêt	012
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 16 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

<< Aller à l'aperçu quotidien