Affichage des archives de samedi, 12 août 2023

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2023 Aug 12 1237 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
12 Aug 2023	153	007
13 Aug 2023	153	007
14 Aug 2023	153	007

Régions solaires actives et éruptions solaires

Solar flaring activity has been quite over the past 24 hours with few C-class flares. The larger flare was a C8.9-class flare produced by NOAA AR 3395 (Catania sunspot group 14) and was peaking at 09:15 UTC on August 12. The other regions did not show any significant flaring activity. Solar flaring activity is expected to remain quite over the next 24 hours with a high probability of C-class flare and a small chance of M-class flares.

Éjection de masse coronale

No coronal mass ejection (CME) with an Earth- directed component was identified in the SOHO/LASCO-C2 coronagraph images over the past 24 hours.

Vent solaire

The solar wind parameters were mostly close to nominal levels over the past 24 hours. The solar wind speed was ranging from 480 km/s to 490 km/s). The total interplanetary magnetic field was below 7.8 nT. The north-south component was fluctuating between -5.4 nT and 7.0 nT. The solar wind conditions are expected to remain as such for the next 24 hours.

Géomagnétisme

Geomagnetic conditions were mostly quiet with some short unsettled periods (NOAA Kp 1-3, K Belgium 1-2) over the past 24 hours. Quiet conditions with possible short unsettled periods are expected for the next 24 hours.

Niveaux de flux de protons

The greater than 10 MeV proton flux has now decreased and returned to nominal values. New proton event cannot be excluded due to the flaring activity, however, it is not very likely.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux was above the level of the 1000 pfu alert threshold for a short period, and is expected to remain below 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 : 080, sur la base de 17 stations.

Indices solaires pour 11 Aug 2023

Nombre de Wolf, observé par Catania	121
Flux solaire à 10 cm	153
AK Chambon La Forêt	011
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	109 - 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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