Affichage des archives de samedi, 26 juin 2021

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2021 Jun 26 1242 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
26 Jun 2021	083	008
27 Jun 2021	084	005
28 Jun 2021	085	008

Bulletin

Over the past 24 hours Catania region 7 (NOAA AR 12833) was the source of a C1.7 flare and has now rotated off disk. The northern and southern plage regions as well as Catania region 8 (NOAA 2835-Beta) are present on the eastern hemisphere. The solar activity is expected to remain at low levels, with a small change of C class flares over the next 24 hours.

Two coronal mass ejections have been detected by Cactus on Jun 25 03:24UT and 14:12UT that seem associated with the Catania region 7. The likelihood of Earth impact is low.

The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux is decreasing to nominal levels over the past 24 hours and is expected to be about those levels during the next 24 hours. The 24h electron fluence was at normal levels in the last 24 hours and is expected to stay at normal levels for the next 24 hours.

The solar wind speed fluctuated between 355 and 425 km/s over the past 24 hours. The total magnetic field strength had values between 2 and 5 nT,while its Bz component varied between -4 and 4 nT. The interplanetary magnetic field phi angle was predominantly on the positive sector (directed away from the Sun). Over the next 24 hours, solar wind conditions can be expected to remain at about those levels.

Geomagnetic conditions were at quiet to unsettled levels (NOAA Kp 0-2 and K Dourbes 0-3) over the past 24 hours. They are expected to remain at about those levels over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 018, sur la base de 14 stations.

Indices solaires pour 25 Jun 2021

Nombre de Wolf, observé par Catania	027
Flux solaire à 10 cm	083
AK Chambon La Forêt	008
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	023 - Basé sur 20 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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