Affichage des archives de mercredi, 19 juin 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Jun 19 1248 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
19 Jun 2024	197	017
20 Jun 2024	197	017
21 Jun 2024	197	017

Régions solaires actives et éruptions solaires

Solar flaring activity over the last 24 hours has been at moderate levels, with multiple C-class flares and M-class flares. Two M-class flares originated from NOAA active region 3712: M2.4 flare, which peaked at 11:23 UTC on June 18 and M1.2 flare, which peaked at 12:20 UTC on June 18. A Third M1.2 flare, which peaked at 06:36 UTC on June 19, originated from NOAA active region 3711. There are currently several sunspot groups on the solar disk, with NOAA AR 3711 and 3712 showing the most flaring activity. The solar flaring activity is expected to be at moderate levels over the next 24 hours, with C-class flares expected, M-class flares probable and a small chance of X-class flares.

Éjection de masse coronale

Several coronal mass ejections (CME) were observed in SOHO/LASCO-C2 coronagraph images. Their sources were located on the far side of the Sun, or from a filament in the north-east of the sun. No Earth- directed component was identified for those CMEs.

Trous coronaux

A large north mid-latitude north coronal hole with negative polarity is crossing the central meridian.

Vent solaire

Solar wind conditions were enhanced in the last 24 hours due to the the high-speed stream from the equatorial, positive polarity coronal hole. The solar wind speed range around 600 km/s. The interplanetary magnetic field decreases from around 10 nT to 6 nT and the Bz component varied between -5 nT and 4 nT. The solar wind conditions are expected to remain elevated for the next days. The high-speed stream from the large north mid-latitude north coronal hole with negative polarity is expected to reach Earth in one-two days.

Géomagnétisme

Geomagnetic conditions were at unsettled levels (NOAA Kp 3, K BEL 3) due to the high-speed stream from the equatorial, positive polarity coronal hole. Mostly unsettled conditions are expected over the next 24 hours. Then in about one-two days, active conditions to minor storm may be observed in response of the high-speed stream from the large north midlatitude north coronal hole.

Niveaux de flux de protons

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

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux was below the threshold level in the last 24 hours and is expected to remain so over the next 24 hours mild elevation may be observed in response of the fast solar wind condition. The 24h electron fluence is presently at normal levels and is expected to remain so over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 151, sur la base de 15 stations.

Indices solaires pour 18 Jun 2024

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	193
AK Chambon La Forêt	022
AK Wingst	014
Ap estimé	014
Nombre international de taches solaires estimé	133 - Basé sur 16 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

<< Aller à l'aperçu quotidien