Affichage des archives de mercredi, 27 novembre 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Nov 27 1236 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
27 Nov 2024	224	004
28 Nov 2024	215	003
29 Nov 2024	205	002

Régions solaires actives et éruptions solaires

Solar flaring activity was low with eight C-class flares detected during the past 24 hours. The brightest flare was an C9.5 on 27 Nov at 10:20 UTC from the newly-emerged SIDC Sunspot Group 326 (NOAA active region 3911). SIDC Sunspot Group 322 (NOAA active region 3905) produced three flares, while SIDC Sunspot Group 302 (NOAA active region 3910) emitted two during the last 24 hours. The rest were produced by SIDC Sunspot Group 298 (NOAA active region 3901) and Sunspot Group 323 (NOAA active region 3906). M-class flaring activity is expected in the next 24 hours, mostly from SIDC Sunspot Groups 302, 322, 323, and 326. Additionally, there is a chance of an X-class flare in the next 24 hours mostly from SIDC Sunspot Group 302.

Éjection de masse coronale

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours.

Vent solaire

The Solar Wind (SW) conditions were typical of the slow SW regime during the last 24 hours. The SW speed varied between from 300 km/h and 400 km/h in the last 24 hours. The total interplanetary magnetic field (Bt) ranged between 2 and 7 nT and its North-South component (Bz) registered values between -6 and 6 nT. The interplanetary magnetic field phi angle was predominately directed towards the Sun during the past 24 hours. The solar wind speed is expected to remain in the slow SW regime during the next 24 hours.

Géomagnétisme

During the last 24 hours geomagnetic conditions were globally and locally quiet (NOAA Kp 1- to 2 and K BEL 0 to 2). In the next 24 hours they are expected to remain at quiet levels both globally and locally.

Niveaux de flux de protons

The greater than 10 MeV proton flux, as measured by the GOES-18 satellite, was at nominal levels over the past 24 hours and is likely to remain so. However, there is the possibility of a proton even in the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux as measured by GOES 18 was very low and is expected to at this level over the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so in the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 207, sur la base de 08 stations.

Indices solaires pour 26 Nov 2024

Nombre de Wolf, observé par Catania	219
Flux solaire à 10 cm	222
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	005
Nombre international de taches solaires estimé	154 - 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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