Affichage des archives de samedi, 15 mars 2025

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2025 Mar 15 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
15 Mar 2025	185	018
16 Mar 2025	185	017
17 Mar 2025	185	017

Régions solaires actives et éruptions solaires

Solar flaring activity was moderate over the past 24 hours, with 1 M-class flare identified. The largest flare was a M1.1 flare (SIDC Flare 3844) peaking on March 14 at 22:21 UTC, which was produced by SIDC Sunspot Group 437 (NOAA Active Region 4030). A total of 10 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 428 (NOAA Active Region 4019) has the most complex magnetic configuration (Beta-Delta) and was decreasing over the past 24 hours. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a chance for M-class flares.

Éjection de masse coronale

No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.

Vent solaire

Earth continued to be under the influence of high speed streams (HSS). The solar wind speed was around 560 km/s. The interplanetary magnetic field was between 8 nT and 5 nT, with the Bz reaching a minimum value of -6 nT. In the next 24 hours, we expect a gradual transition from fast to slow solar wind.

Géomagnétisme

Geomagnetic conditions were globally and locally unsettled to active (KP4) in the past 24 hours. Unsettled conditions are expected in the next 24 hours.

Niveaux de flux de protons

The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux exceeded the 1000 pfu threshold for most of the time during the past 24 hours, and is expected to remain above the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 161, sur la base de 09 stations.

Indices solaires pour 14 Mar 2025

Nombre de Wolf, observé par Catania	221
Flux solaire à 10 cm	180
AK Chambon La Forêt	031
AK Wingst	022
Ap estimé	025
Nombre international de taches solaires estimé	173 - Basé sur 17 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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