Affichage des archives de lundi, 2 mars 2026

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Mar 02 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
02 Mar 2026	148	007
03 Mar 2026	150	005
04 Mar 2026	152	010

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 C4.5 flare (SIDC Flare 7119), peaking at 04:38 UTC on March 02, associated with SIDC Sunspot Group 805 (NOAA Active Region 4384, magnetic type beta). There are currently seven 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 slow Coronal Mass Ejection (SIDC CME 630) was observed in LASCO/C2 and STEREO-A coronagraph imagery, lifting off around 10:30 UTC on March 02. It is associated with a prominence eruption near the northeast limb, observed in SUVI 304 data starting from 09:30 UTC. It is not expected to impact Earth. A second CME (SIDC CME 631) was observed in LASCO/C2 coronagraph imagery, lifting off around 10:40 UTC on March 02 from the west limb. It is associated with a filament eruption in the nortwest quadrant, observed in AIA 304 data starting from 10:00 UTC. 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 slow solar wind conditions. The solar wind speed decreased from around 400 km/s to 340 km/s. The interplanetary magnetic field values varied between 4 nT and 6 nT. The Bz component was between -4 nT and 4 nT. The interplanetary magnetic field angle phi was predominantly negative between 13:45 UTC and 23:50 UTC on March 01, then flipping to mostly positive values. Slow solar wind conditions are expected over the next 24 hours.

Géomagnétisme

Geomagnetic conditions globally and locally were quiet (NOAA Kp 1-2, K Bel 1-2) 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 was above the 1000 pfu threshold until 06:00 UTC on March 02. The greater than 2 MeV electron flux measured by GOES 19 remained above the 1000 pfu threshold during the last 24 hours. 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 : 082, sur la base de 16 stations.

Indices solaires pour 01 Mar 2026

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	147
AK Chambon La Forêt	010
AK Wingst	010
Ap estimé	009
Nombre international de taches solaires estimé	084 - Basé sur 23 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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