Affichage des archives de mercredi, 20 novembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Nov 20 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
20 Nov 2019	070	007
21 Nov 2019	070	018
22 Nov 2019	070	009

Bulletin

The solar activity has been at very low levels over the past 24 hours. The Sun is currently spotless and the X-ray flux remains below B-level. However, a compact bright structure, located at low-latitude near the central meridian, has shown some evidence of activity. There is currently a low-latitude positive-polarity patchy coronal hole located in the Western Hemisphere. Solar activity is expected to remain at low levels for the next 24 hours.

No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

The solar wind speed has decreased from around 350 to 330 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 1 nT and 4 nT. The Bz component fluctuated around 0 nT, ranging between -3 and +3 nT. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours.

Geomagnetic conditions are expected to increase later today / tomorrow, due to the arrival of the high speed stream (HSS) / CIR related to a patchy low-latitude positive polarity Coronal Hole that passed the central meridian a couple of days ago.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.

Indices solaires pour 19 Nov 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	///
AK Chambon La Forêt	///
AK Wingst	///
Ap estimé	///
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

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