Affichage des archives de samedi, 1 juillet 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Jul 01 1252 UTC

Prévisions SIDC

Éruptions solaires

M-class flares expected (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
01 Jul 2023	160	007
02 Jul 2023	160	007
03 Jul 2023	160	007

Régions solaires actives et éruptions solaires

Solar flaring activity was at low levels over the last 24 hours with few low C-class flares. The largest flare was a C4.2-class flare produced by the NOAA Active Region AR-3354, which is currently the most complex region on the disc (Beta-gamma-delta). We expect the activity remaining mostly at low levels with several C-class flares, and possible isolated M-class flare in the next 24 hours.

Éjection de masse coronale

No Earth-directed Coronal Mass Ejections (CME) were observed in the SOHO/LASCO coronograph images over the past 24 hours.

Trous coronaux

A small equatorial coronal hole (negative polarity) has transited the central meridian today.

Vent solaire

The solar wind parameters showed a return to slow solar wind regime. The wind speed decreased form 550 km/s to 430km/h. The total interplanetary magnetic field (Bt) also decreased to values below 7 nT. The southward component (Bz) was fluctuating between -3.8 nT and 6.3 nT being manly positive. The interplanetary magnetic field phi angle was positive, directed outward the Sun.

Géomagnétisme

Geomagnetic conditions were quiet to unsettled (NOAA Kp<4 and K_BEL<4). Geomagnetic activity is expected to remained quiet to unsettled.

Niveaux de flux de protons

The greater than 10 MeV proton flux was at background levels over the past 24 hours and is expected to remain so for the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

Electron fluxes at GEO: The greater than 2 MeV electron flux was above the 1000 pfu threshold for a short period. It is expected to remain close to the threshold for the next 24 hours. The 24-hour electron fluence was at normal to moderate levels for the past 24 hours and it is expected to remain at these levels for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 132, sur la base de 12 stations.

Indices solaires pour 30 Jun 2023

Nombre de Wolf, observé par Catania	092
Flux solaire à 10 cm	159
AK Chambon La Forêt	013
AK Wingst	008
Ap estimé	009
Nombre international de taches solaires estimé	111 - Basé sur 29 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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