Affichage des archives de samedi, 7 mai 2022

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2022 May 07 1235 UTC

Prévisions SIDC

Éruptions solaires

M-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
07 May 2022	123	008
08 May 2022	126	013
09 May 2022	128	010

Bulletin

Solar flaring activity was low over the past 24 hours. NOAA Active Regions (ARs) 3004 and 3006 were the most active, producing low level C-flares. The largest flare over the period was a C4.8 flare from NOAA AR 3004, peaking at 16:22 UT. The flaring activity is expected to be at moderate levels with C-class flares expected and M-class flares remain probable.

A filament erupted from the north east quadrant, seen in SDO/AIA 304 from 20:00 UT. This is not expected to impact Earth. 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 with a small chance of a proton event associated to possible flares from NOAA AR 3004. The greater than 2MeV electron flux oscillated around the 1000 pfu threshold and is expected to again exceed threshold over the next 24 hours. The 24h electron fluence was at normal to moderate levels and is expected to be at normal to moderate levels over the next 24 hours.

The solar wind conditions reflected an ambient solar wind regime. The solar wind speed (as recorded by ACE) ranged between 300 and 400 km/s. The total magnetic field magnitude fluctuated around 5 nT. The interplanetary magnetic field phi angle was predominantly in the negative sector (directed towards the Sun). A weak enhancement in the solar wind speed and magnetic field is possible on May 07 to May 08, due to a glancing blow from a CME associated with a dimming observed on May 03.

Geomagnetic conditions were quiet to unsettled (NOAA KP 1-2 and Local K-Bel 0-3). Geomagnetic conditions are expected to be quiet to active on May 07 and May 08, due to the possible glancing blow of a CME.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 066, sur la base de 14 stations.

Indices solaires pour 06 May 2022

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	119
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	075 - Basé sur 22 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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