Affichage des archives de jeudi, 2 mars 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Mar 02 1241 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 2023	162	006
03 Mar 2023	162	007
04 Mar 2023	162	007

Bulletin

The solar flaring activity was at low levels over the past 24 hours. The larger flare was a C9.2-class flare peaking at 04:50 UTC on February 02 occurring in the most complex region on disc, NOAA active region 3234 (with a magnetic complexity of beta-gamma-delta). The other region on the disc did not show any significant flaring activity. The flaring activity over the next 24 hours is expected to remain mostly at low levels with C-class flares and with some possibility of an M-class flare.

Several coronal mass ejections and flows were observed in the currently available SOHO/LASCO coronagraph imagery and automatically detected by the Cactus tool over the past 24 hours. No clear Earth-directed coronal mass ejections were identified.

The greater than 10 MeV protons flux was at the background levels over the past 24 hours. The proton flux is expected to be at the background levels over the next day. The greater than 2 MeV electron flux crossed the 1000 pfu threshold and is expected to remain elevated over the next days due to the enhanced solar wind conditions in the past days. The 24-hour electron fluence was at moderate levels and is expected to remind at moderate levels over the next 24 hours.

An equatorial coronal hole of negative polarity is currently transiting the central meridian. It is expected to enhance the solar wind conditions near Earth starting in about 3 days, starting on February 5.

The solar wind environment near Earth slowly returned to nominal values over the past 24 hours: The wind speed steadily decreased from 600 km/s to 480 km/s. The total interplanetary magnetic was below 7 nT, and the southward interplanetary magnetic component, Bz, fluctuated between -4 nT and 7 nT. The solar wind condition is expected to continue its decrease over the next 24 hours.

The geomagnetic conditions were quiet and is expected to remain quiet.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 098, sur la base de 15 stations.

Indices solaires pour 01 Mar 2023

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	162
AK Chambon La Forêt	011
AK Wingst	009
Ap estimé	010
Nombre international de taches solaires estimé	092 - Basé sur 28 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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