Affichage des archives de lundi, 22 août 2022

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2022 Aug 22 1248 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
22 Aug 2022	096	018
23 Aug 2022	097	016
24 Aug 2022	110	011

Bulletin

Solar flaring activity was at low levels over the past 24 hours. There are five active regions present on the visible solar disk, with a newly emerged region located on NE. Two returning active region are about to rotate in the visible part of the disk on SE. NOAA AR 3085 has been the most energetic, exhibiting growth and producing the largest flare of the period, a C2.4-class flare, peaking at 21 August 23:47 UTC. Flaring activity is expected remain mainly at low levels over the next 24 hours, with a small chance of M-class flares.

No Earth directed Coronal Mass Ejections (CMEs) were detected in the available coronagraphic imagery over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours. The proton flux is expected to remain at nominal levels for the next 24 hours. The greater than 2MeV electron flux was about the 1000 pfu threshold over the past 24 hours. It is expected remain about about threshold over the next 24 hours. The 24h electron fluence was at moderate levels over the past 24 hours. It is expected be at nominal to moderate levels over the next 24 hours.

The solar wind parameters reflect high speed streams (HSS) and ICME influences over the past days. Over the past 24 hours, the solar wind magnetic field values were quite stable, fluctuating between 5 and 8 nT, while Bz had values between -7 and 6nT. The solar wind speed was fairly stable at around 570 km/s, with variations. The interplanetary magnetic field phi angle was on the negative sector (towards the Sun). Over the next 24 hours, we are expecting the impact of those effects to persist.

Active conditions were recorded at 21 August 15:00-19:00 UTC (NOAA Kp and/or K Dourbes 4) over the past 24 hours. Unsettled to active conditions can be expected over the past 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 076, sur la base de 17 stations.

Indices solaires pour 21 Aug 2022

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	097
AK Chambon La Forêt	022
AK Wingst	017
Ap estimé	017
Nombre international de taches solaires estimé	061 - Basé sur 27 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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