Affichage des archives de mardi, 17 novembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Nov 17 1231 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 Nov 2020	075	001
18 Nov 2020	073	002
19 Nov 2020	072	003

Bulletin

Solar activity was at very low levels. The solar disk remains spotless with no significant flares in the last 24 hours. The solar activity is expected to remain very low. No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux remained under the 1000 pfu threshold and is expected to remain so. The 24h electron fluence was at nominal levels and is expected to remain so.

Solar wind speed remained very slow with highest value of 319 km/s (ACE and DSCOVR). The total magnetic field was very weak with a strength of < 4.5 nT. The Bz component varied between -4 nT and +3 nT.

Geomagnetic activity was quiet and is expected to remain so within the next 48. A small positive-polarity coronal hole was observed today close to the central meridian. The high-speed stream from it might induce unsettled to active conditions starting from Nov. 20th.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 010, sur la base de 09 stations.

Indices solaires pour 16 Nov 2020

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	077
AK Chambon La Forêt	003
AK Wingst	000
Ap estimé	001
Nombre international de taches solaires estimé	000 - Basé sur 19 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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