Affichage des archives de samedi, 25 juin 2022

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2022 Jun 25 1231 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
25 Jun 2022	115	010
26 Jun 2022	115	012
27 Jun 2022	115	011

Bulletin

The solar flaring activity was at low levels over the past 24 hours with only very few small C-class flares from several sunspots groups visible on the disc seen from Earth. We expect a very low flaring activity with a small chance of isolated C-class flares.

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux was below 1000 pfu alert threshold and it is expected to remain so during the next 24 hours. The electron fluence was at normal to moderate levels and is expected to remain normal to moderated levels in the next 24 hours.

The solar wind parameters in Earth environment were showing a slow solar wind-speed regime: the wind speed ranged between 354 km/s and 462 km/s. The interplanetary magnetic field magnitude showed some higher values with an increase from 5 nT in the beginning of the periods to the current values aournd 13 nT. The Bz component of the interplanetary magnetic field fluctuated between -8.3 nT and 10.4 nT being predominately negative. The high-speed streams coming from the coronal holes (negative polarity) may influence the solar wind conditions and contribute to its enhancement in next days.

The geomagnetic conditions were mostly quiet to unsettle (NOAA Kp and local K-Belgium 1-3). An isolated period of active conditions (K-Belgium = 4) was observed from local stations in Belgium in responses to the prolonged negative values of the Bz component of the interplanetary magnetic field. The geomagnetic conditions are expected to be mostly quiet to unsettle with possible periods of active conditions in responses to the prolonged negative values of the Bz component.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 052, sur la base de 19 stations.

Indices solaires pour 24 Jun 2022

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	115
AK Chambon La Forêt	016
AK Wingst	010
Ap estimé	011
Nombre international de taches solaires estimé	069 - 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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