Affichage des archives de lundi, 20 novembre 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Nov 20 1247 UTC

Prévisions SIDC

Éruptions solaires

M-class flares expected (probability >=50%)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
20 Nov 2023	140	010
21 Nov 2023	145	015
22 Nov 2023	150	006

Régions solaires actives et éruptions solaires

There are three active regions visible on the disk situated on the eastern hemisphere. NOAA 3490 is the most magnetically complex and has produced the strongest flare over the last 24 hours, an M1.2 flare peaking at 20 November 09:03UT. More M-class flares can be expected in the next 24 hours.

Éjection de masse coronale

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery.

Trous coronaux

The low latitudinal extension of a high latitude coronal hole (in the northern hemisphere, negative polarity) is in a geo-effective position today. An equatorial positive polarity coronal hole will be in geoeffective position over the next 24 hours while the southern negative polarity coronal hole will cross central meridian over the next 24 hours. Finally, a mid latitude coronal hole postive coronal hole will cross central meridian on 22-23 November.

Vent solaire

A disturbance in the solar wind parameters starting on 20 November 0200:09UT could be associated with the not highly anticipated high speed stream associated with the negative polarity northern coronal hole. The high speed solar wind from positive polarity coronal hole is expected to arrive to Earth in 24 hours.

Géomagnétisme

During the last 24 hours the geomagnetic conditions were quiet to unsettled (NOAA KP 2, K_Bel 3). Mostly unsettled conditions, while a chance of active conditions are expected for the next 24 hours, active conditions can be expected due to the arrival of a high speed streams.

Niveaux de flux de protons

Over the past 24 hours the greater than 10 MeV GOES proton flux was below threshold and is expected to remain so over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux was below the 1000 pfu threshold, as measured by GOES 16. It is expected to remain so in the next 24 hours. The 24 hour electron fluence was at normal levels, it is expected to stay at those levels for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 100, sur la base de 08 stations.

Indices solaires pour 19 Nov 2023

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	140
AK Chambon La Forêt	008
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	065 - Basé sur 15 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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