Affichage des archives de lundi, 10 janvier 2022

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2022 Jan 10 1231 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
10 Jan 2022	100	004
11 Jan 2022	097	001
12 Jan 2022	094	007

Bulletin

Solar activity was at very low levels. NOAA Active Region (AR) 2924 (Catania group 1) produced a B-class flare and continued to decay. NOAA AR 2925 (Catania group 2) also decayed and did not produce any noticeable activity. NOAA AR 2927 did not produce any flare activity above A-class flares, but is expected to be more active in the next 24 hours. A, yet unnumbered, AR (possibly NOAA AR 2921 returning to Earth view) has appeared at N29E89 but has not produced any noticeable activity so far.

No Earth directed Coronal Mass Ejections (CMEs) have been observed in the available coronagraph data.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux dropped below the 1000 pfu alert threshold during the last 24 hours and is expected to remain below this threshold for the next 24 hours. The 24h electron fluence also dropped at nominal levels during the last 24 hours and is expected to remain below the threshold for the next 24 hours.

The solar wind parameters are still under the influence of the High Speed Stream (HSS) that arrived on 17 UT Jan 08. The total magnetic field magnitude oscillated between 0.5 and 6 nT, while its Bz component varied between -4 and 4 nT. The interplanetary magnetic field phi angle oscillated between negative and positive values almost in equal measure. The solar wind speed gradually dropped from 510 to 410 km/s during the last 24 hours. The solar wind conditions are expected to slowly return to a slow wind regime in the next 24 hours.

Geomagnetic conditions were globally quiet to moderate (NOAA Kp 1-3) and locally quiet (K Manhay index 1-2). Geomagnetic conditions are expected to be quiet for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 060, sur la base de 10 stations.

Indices solaires pour 09 Jan 2022

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	102
AK Chambon La Forêt	013
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	056 - Basé sur 21 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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