Affichage des archives de dimanche, 14 juin 2026

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Jun 14 1231 UTC

Prévisions SIDC

Éruptions solaires

C-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
14 Jun 2026	120	021
15 Jun 2026	120	021
16 Jun 2026	115	024

Régions solaires actives et éruptions solaires

Solar flaring activity was low over the past 24 hours, with a few C-class flares recorded. The largest flare was a C2.5 flare (SIDC Flare 7939), peaking at 13:03 UTC on June 13, associated with a filament eruption near S21W73. There are currently four numbered active regions on the visible solar disk. A new region emerged in the northeastern hemisphere and was numbered SIDC Sunspot Group 894 (NOAA Active Region 4468, N10E48; magnetic type beta), but it remained quiet. The remaining active regions are relatively simple (magnetic type alpha or beta) and did not produce any significant flaring activity. Solar flaring activity is expected to remain low over the next 24 hours, with C-class flares very likely and a small chance of M-class flares.

Éjection de masse coronale

No Earth-directed CMEs have been detected in the available coronagraph imagery over the past 24 hours.

Vent solaire

Over the past 24 hours, solar wind parameters (ACE and SOLAR-1) were indicative of a probable mixture of the waning influence of the high- speed stream from the equatorial negative polarity coronal hole SIDC Coronal Hole 147 and the glancing-blow arrival of the ICME associated with the June 11 CME (SIDC CME 675). The solar wind speed decreased from about 620 km/s to approximately 470 km/s. The interplanetary magnetic field was weak, below 7 nT. The magnetic field orientation was predominantly in the negative sector, with the field directed towards the Sun. A gradual return to slow solar wind conditions is mostly expected over the next 24 hours, with a chance of weak enhancements from late on June 14 due to a possible glancing-blow arrival from the June 12 CME (SIDC CME 676).

Géomagnétisme

Geomagnetic conditions reached active levels globally (NOAA Kp = 4) between 18:00 and 21:00 UTC on June 13. Locally over Belgium, quiet to unsettled conditions were observed (K-Bel = 1 to 3). Mostly quiet to unsettled geomagnetic conditions are expected over the next 24 hours, with a chance of active conditions and isolated minor storm periods from late on June 14 due to a possible glancing blow arrival from the June 12 CME (SIDC CME 676).

Niveaux de flux de protons

The greater than 10 MeV proton flux, as measured by GOES-18, was below the 10pfu threshold level over the past 24 hours 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, as measured by GOES-19, exceeded the 1000 pfu alert threshold between 12:45 UTC and 16:50 UTC on June 14, reaching a maximum value of 1519 pfu. The greater than 2 MeV electron flux may exceed the alert threshold again over the next 24 hours. The electron fluence was at normal to moderate levels and is expected to remain at these levels over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 067, sur la base de 17 stations.

Indices solaires pour 13 Jun 2026

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	122
AK Chambon La Forêt	018
AK Wingst	016
Ap estimé	016
Nombre international de taches solaires estimé	052 - 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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