Affichage des archives de samedi, 2 juin 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jun 02 1234 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
02 Jun 2018	076	019
03 Jun 2018	076	021
04 Jun 2018	076	012

Bulletin

The Sun has produced a few low B flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 30%, mainly from beta-gamma region NOAA AR 2712.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

The solar wind speed as observed by DSCOVR increased from about 620 km/s to maximum values near 750 km/s (with several outliers near 800 km/s), and is now near 640 km/s. The Interplanetary Magnetic Field (IMF) was directed towards the Sun, and its magnitude decreased from about 9 nT to about 3 nT. There were no extended periods with Bz smaller than -5 nT. Enhanced solar wind conditions are expected on June 2 and 3.

Quiet to minor storm conditions (K Dourbes between 1 and 5; NOAA Kp between 3 and 5) were registered in the past 24 hours, with just one K Dourbes = 5 interval at 12h UT on June 1. Active geomagnetic levels (K Dourbes = 4) are possible on June 2 and 3 due to the ongoing effects of the high speed stream associated with an equatorial coronal hole, with a chance for minor storm intervals (K Dourbes = 5). On June 4, a return to quiet to unsettled geomagnetic levels is expected (K Dourbes < 4), with a chance for active intervals (K Dourbes = 4).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 026, sur la base de 13 stations.

Indices solaires pour 01 Jun 2018

Nombre de Wolf, observé par Catania	037
Flux solaire à 10 cm	075
AK Chambon La Forêt	039
AK Wingst	027
Ap estimé	028
Nombre international de taches solaires estimé	024 - 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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