Affichage des archives de dimanche, 29 septembre 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Sep 29 1232 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
29 Sep 2024	195	019
30 Sep 2024	197	017
01 Oct 2024	199	007

Régions solaires actives et éruptions solaires

Solar flaring activity was low over the past 24 hours. A total of 9 numbered sunspot groups were identified on the disk over the past 24 hours. The largest flare is ongoing (currently around C6), from a returning region rotating into view from the east limb. SIDC Sunspot Group 244 (NOAA Active Region 3836) currently located at S12E05 has a Beta-Gamma magnetic configuration and was stable over the past 24 hours. Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares likely and a small chance for X-class flares.

Éjection de masse coronale

No Earth directed CMEs were observed in the past 24 hours.

Trous coronaux

SIDC Coronal Hole 65, a small negative polarity equatorial coronal hole, crossed central meridian on 26 September, a HSS may be expected at the Earth in the next 24 hours.

Vent solaire

The Earth is inside a slow solar wind stream, with speeds around 350 km/s and an interplanetary magnetic field of about 5 nT. A mild high speed solar wind stream may arrive in the next 24 hours.

Géomagnétisme

The geomagnetic conditions over the past 24 hours were quiet to unsettled both locally and globally (K_Bel and Kp up to 3). Active conditions can be expected for the next 24 hours.

Niveaux de flux de protons

Over the past 24 hours, the greater than 10 MeV GOES proton flux has been at nominal levels, and is expected to remain so over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux as measured by GOES 16 and 18 was below the 1000 pfu threshold in the past 24 hours. Similar conditions can be expected for 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 : 164, sur la base de 13 stations.

Indices solaires pour 28 Sep 2024

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	195
AK Chambon La Forêt	015
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	164 - Basé sur 22 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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