Affichage des archives de mardi, 3 mars 2026

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Mar 03 1234 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
03 Mar 2026	146	007
04 Mar 2026	148	011
05 Mar 2026	150	005

Régions solaires actives et éruptions solaires

Solar flaring activity during the last 24 hours has been low, with only C-class flares. The strongest flare was a C2.9 flare (SIDC Flare 7125), peaking at 00:30 UTC on March 03, associated with SIDC Sunspot Group 804 (NOAA Active Region 4381, magnetic type beta). There are currently six numbered active regions on the solar disk. The most complex ones have a beta magnetic type. The 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

A Coronal Mass Ejection (SIDC CME 632) was observed in LASCO/C2 coronagraph imagery, lifting off the west limb around 18:50 UTC on March 02. It is most likely associated with a prominence eruption over the west limb, observed in SUVI 304 data starting from 17:50 UTC. It is not expected to impact Earth. A wide CME (SIDC CME 633) was observed in LASCO/C2 and STEREO-A coronagraph imagery, lifting off the east limb around 11:00 UTC on March 03. It is likely a backsided event and it is not expected to impact Earth. No other Earth-directed CMEs were observed in the available coronagraph imagery during the last 24 hours.

Vent solaire

Over the last 24 hours, the solar wind parameters (ACE and DSCOVR) reflected mostly slow solar wind conditions. The solar wind speed increased from 330 km/s to 400 km/s. The interplanetary magnetic field increased from 4 nT to 9 nT. The Bz component varied between -10 nT and 6 nT. The interplanetary magnetic field angle phi was predominantly in the positive sector. Mostly slow solar wind conditions are expected over the next 24 hours.

Géomagnétisme

Geomagnetic conditions globally were quiet to unsettled (NOAA Kp 1 to 3- ) during the last 24 hours. Geomagnetic conditions locally were quiet (K Bel 1 to 2) during the last 24 hours. Mostly quiet conditions are expected over the next 24 hours.

Niveaux de flux de protons

The greater than 10 MeV proton flux was below the 10 pfu threshold during the last 24 hours. It is expected to remain below the threshold level over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux measured by GOES 18 and GOES 19 decreased below the 1000 pfu threshold after 04:30 UTC on March 03. The 24-hour electron fluence was at moderate levels and is expected to remain so over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 085, sur la base de 19 stations.

Indices solaires pour 02 Mar 2026

Nombre de Wolf, observé par Catania	107
Flux solaire à 10 cm	148
AK Chambon La Forêt	007
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	080 - Basé sur 27 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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