Affichage des archives de mardi, 21 mai 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 May 21 1233 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
21 May 2024	200	007
22 May 2024	198	007
23 May 2024	196	007

Régions solaires actives et éruptions solaires

There are six visible ARs on the solar disk. Flaring activity has been low, only C-class flares were observed in the last 24 hours. The strongest one was a C4.8 flare from NOAA AR 3683 (beta magnetic field configuration). NOAA AR 3685 has beta-gamma magnetic field configuration and has evolved in size and complexity. More C-class flares will occur and M-class flares can be expected in the next 24 hours.

Éjection de masse coronale

No Earth directed CME has been observed in the last 24 hours. After further analysis, the CME from 20 May is not expected to affect the Earth.

Vent solaire

The solar wind at the Earth is slow, with speeds around 380 km/s and interplanetary magnetic field around 6 nT. There are low chances of a glancing blow from the CME on 17 May, otherwise slow wind conditions can be expected for the next 24 hours.

Géomagnétisme

Geomagnetic conditions have been quiet in the last 24 hours (Kp and K_BEL up to 2). If we see a glancing blow from the 17 May CME (low chances), disturbed conditions may occur, otherwise quiet conditions can be expected for the next 24 hours.

Niveaux de flux de protons

The 10 MeV GOES-18 proton flux was below threshold in the past 24 hours, it is expected to remain so.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux from GOES 16 was below the threshold level in the last 24 hours. It is expected to remain below the threshold during the next 24 hours. The electron fluence was at normal levels for the last 24 hours and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 166, sur la base de 13 stations.

Indices solaires pour 20 May 2024

Nombre de Wolf, observé par Catania	179
Flux solaire à 10 cm	200
AK Chambon La Forêt	010
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	144 - Basé sur 33 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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