Affichage des archives de jeudi, 18 janvier 2024

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2024 Jan 18 1232 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
18 Jan 2024	174	007
19 Jan 2024	174	007
20 Jan 2024	174	007

Régions solaires actives et éruptions solaires

Solar flaring activity over the past 24 hours was at low levels. The C5.4-class flare was the larger flare and was produced by the bipolar NOAA Active Region 3553 (magnetic complexity beta). NOAA Active Region 3555 is currently the most complex region with a magnetic complexity beta-gamma, but does not show any significant flaring activity. The solar flaring activity is likely to be at low levels over the coming days with C-class flares and possible M-class flares.

Éjection de masse coronale

Based on currently available coronagraph images several coronal mass ejections (CMEs) were observed. No Earth directed coronal mass ejections have been identified in the last 24 hours.

Trous coronaux

The small midlatitude coronal hole in the northern hemisphere (with positive magnetic polarity) is now on the solar meridian. It’s a high-speed stream may impact the solar condition near Earth in 2-3 days.

Vent solaire

Slow solar wind conditions were recorded over the past 24 hours. The solar wind speed as measured by DSCOVR ranged between 300 km/s and 500 km/s. The total interplanetary magnetic field was below 7 nT, and the Bz (north-south) component fluctuating between -6 nT and 5 nT. Slow solar wind conditions are expected for the next 24 hours.

Géomagnétisme

The geomagnetic conditions over the past 24 hours were quiet (NOAA-Kp and K-Bel 1-2). Mostly quiet conditions are expected in the next 24 hours.

Niveaux de flux de protons

The greater than 10 MeV protons flux where at background levels. It is expected to be at background levels in the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV GOES 16 electron flux was below the 1000 pfu threshold and is expected to remain so in the next 24 hours. The 24h electron fluence was at nominal level and is expected to remain so in the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 128, sur la base de 14 stations.

Indices solaires pour 17 Jan 2024

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	174
AK Chambon La Forêt	007
AK Wingst	004
Ap estimé	002
Nombre international de taches solaires estimé	143 - Basé sur 09 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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