Affichage des archives de lundi, 19 août 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Aug 19 1231 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
19 Aug 2024	233	002
20 Aug 2024	233	007
21 Aug 2024	233	007

Régions solaires actives et éruptions solaires

Solar flaring activity was moderate over the past 24 hours. The largest flare was a M1.3-flare, with peak time 09:36 UTC on August 19, from NOAA AR 3785 (beta). There are currently 10 numbered active regions on the visible disk. NOAA AR 3784 is the most complex AR (beta-gamma-delta). The solar flaring activity is expected to be at moderate levels over the coming day with C-class flares expected and M-class flares probable and a low chance of X-class flares.

Éjection de masse coronale

No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.

Trous coronaux

A positive polarity low-latitude coronal hole crossed the central meridian. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth on August 22.

Vent solaire

The solar wind at the Earth is slow, with speeds around 400 km/s and interplanetary magnetic field around 7nT, with the Bz reaching a minimum value of -5 nT. Slow solar wind conditions are expected to continue in the next 24h.

Géomagnétisme

Geomagnetic conditions were globally and locally quiet to active (Kp 4- and K Bel 4). Quiet conditions are expected in the next 24 hours.

Niveaux de flux de protons

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

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during 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 : 227, sur la base de 14 stations.

Indices solaires pour 18 Aug 2024

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	231
AK Chambon La Forêt	016
AK Wingst	016
Ap estimé	016
Nombre international de taches solaires estimé	209 - Basé sur 12 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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