Affichage des archives de mardi, 19 février 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Feb 19 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
19 Feb 2019	070	005
20 Feb 2019	070	018
21 Feb 2019	070	012

Bulletin

Solar activity was at very low levels. The 15-degrees long filament in former active region NOAA 2733 is stable and currently located near N10E15. No earth-directed coronal mass ejections were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed showed a generally declining trend from 370 km/s at the beginning of the period to 330 km/s at the end (DSCOVR). Bz ranged between -3 and +3 nT. The interplanetary magnetic field was predominately directed towards the Sun (negative sector). Geomagnetic activity was at quiet levels.

Mostly quiet geomagnetic conditions are expected until the arrival of the co-rotating interaction region and wind stream from the positive polarity coronal hole later today or on 20 February. This may result in active conditions, with a small chance on an isolated minor storming episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 23 stations.

Indices solaires pour 18 Feb 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	070
AK Chambon La Forêt	008
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	000 - Basé sur 31 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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