Affichage des archives de lundi, 1 juin 2026

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Jun 01 1234 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
01 Jun 2026	130	006
02 Jun 2026	124	005
03 Jun 2026	120	023

Régions solaires actives et éruptions solaires

Solar flaring activity was low over the past 24 hours. The largest flare was a C1.9 flare (SIDC flare 7822) peaking on June 1 at 21:53 UTC. There are currently 9 numbered regions on the disk. SIDC Sunspot Groups 860 and 885 (NOAA Active Regions 4455 and 4457) are the largest and most complex regions on disk (magnetic type beta). The remaining regions are all simple and mostly quiet. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares probable and possible isolated M-class flares.

Éjection de masse coronale

No Earth directed CMEs were detected in the available coronagraph imagery.

Trous coronaux

An equatorial, positive polarity coronal hole (SIDC Coronal Hole 166) continued to cross the central meridian.

Vent solaire

Over the past 24 hours, the solar wind parameters reflected the waning influence of the high speed stream from the negative polarity coronal holes, which crossed the central meridian on May 27 and May 28, respectively. The solar wind speed decreased from 550 kms to around 400 km/s. The total magnetic field ranged between 3 and 8 nT. Bz had a minimum of -5 nT. The interplanetary magnetic field phi angle was mostly in the negative sector (directed away from the Sun). Slow solar wind conditions are expected over the next 24 hours.

Géomagnétisme

The geomagnetic conditions were at quiet to unsettled levels globally (NOAA Kp 3) and at quiet to active levels locally (K Bel 4). Quiet conditions are expected over the next 24 hours.

Niveaux de flux de protons

The greater than 10 MeV proton flux was below the 10 pfu threshold over the past 24 hours. It is expected to remain below this threshold level over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux, as measured by GOES-18 and GOES-19 satellites, was below the 1000 pfu threshold. The greater than 2 MeV electron flux is expected to be below this threshold over the next 24 hours. The electron fluence was at normal levels and is expected to be at normal levels for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 114, sur la base de 18 stations.

Indices solaires pour 31 May 2026

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	136
AK Chambon La Forêt	018
AK Wingst	016
Ap estimé	014
Nombre international de taches solaires estimé	113 - Basé sur 24 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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