Affichage des archives de mardi, 4 juin 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Jun 04 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
04 Jun 2024	190	024
05 Jun 2024	195	007
06 Jun 2024	195	007

Régions solaires actives et éruptions solaires

Solar flaring activity was moderate over the past 24 hours. The largest flare was a M4.8-flare, with peak time 14:11 UTC on June 03 associated with NOAA AR 3695 (beta). There are currently 11 numbered active regions on the visible disk. NOAA AR 3697 is the most complex AR (beta-gamma-delta) and is responsible for the majority of the flaring activity of the last 24h, including the M2.4-flare with peak time 6:31 UTC June 04. The solar flaring activity is expected to be at moderate levels over the coming day with C-class flares expected and M-class flares likely and a chance of X-class flares.

Éjection de masse coronale

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

Vent solaire

The solar wind at the Earth was initially slow, with speeds of 300 km/s and interplanetary magnetic field around 5 nT and Bz reaching minimum value of -5nT. Around 21:00 UTC June 03 the magnetic field went up to 18nT and later on the minimum Bz was -10 nT. The solar wind speed increased slowly from this time on to 400 km/s. A minor increase of the solar wind speed and magnetic field is expected later on June 04, due to the potential arrival of the CME of June 01.

Géomagnétisme

Geomagnetic conditions reached minor storm level (NOAA Kp 5, Local K Bel 4) June 03 between 21:00- 24:00 UTC. Geomagnetic conditions may reach active to minor storm conditions in the next 24h due to the possible arrival from the CME of June 01.

Niveaux de flux de protons

Over the past 24 hours, the greater than 10 MeV GOES proton flux remained below the 10 pfu threshold and is expected to remain so over the next day. There is a slight chance that the proton flux may increase due to strong flaring from NOAA AR 3697.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 222, sur la base de 15 stations.

Indices solaires pour 03 Jun 2024

Nombre de Wolf, observé par Catania	258
Flux solaire à 10 cm	186
AK Chambon La Forêt	021
AK Wingst	013
Ap estimé	012
Nombre international de taches solaires estimé	215 - 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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