Affichage des archives de dimanche, 17 mars 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Mar 17 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
17 Mar 2019	069	018
18 Mar 2019	069	008
19 Mar 2019	069	015

Bulletin

X-ray flux remained below B level. And with a spotless disk, X-ray flux is expected to remain below C level.

No new Earth directed CME's have been detected in coronagraph data.

The Solar proton flux levels were at background values and are expected to remain so.

As expected, solar wind speed further enhanced reaching over 450 km/s around midnight. Total magnetic field was initially mainly in the 4-7nT range with a gradual build up towards current values around 8nT. The Bz component was pronounced southward with an extended period of -6nT and even reached close to -8nT. Magnetic field phi angle showed a sector change just after 5:00UT at which time also Solar wind speed dropped and then further decreased to under 400 km/s. Solar wind is expected to approach nominal conditions with on March 19 the influences of an equatorial positive polarity coronal hole setting in.

Geomagnetic conditions reached active and even minor geomagnetic storm levels under the elevated solar wind conditions. Geomagnetic conditions are expected to be quiet to unsettled with later on March 19 renewed active conditions expected.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 22 stations.

Indices solaires pour 16 Mar 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	030
AK Wingst	015
Ap estimé	014
Nombre international de taches solaires estimé	000 - Basé sur 21 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