Affichage des archives de dimanche, 3 juin 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jun 03 1230 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
03 Jun 2018	073	014
04 Jun 2018	073	011
05 Jun 2018	073	007

Bulletin

NOAA AR 2712 showed decay and is now a beta region again, but is has still produced several B flares in the past 24 hours. The brightest flare was a B7.7 flare peaking at 7:55 UT on June 3. The chance for a C flare in the next 24 hours is estimated at 25%, mainly from 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 fluctuated between about 570 km/s and 740 km/s, with current values around 700 km/s. The Interplanetary Magnetic Field (IMF) was predominantly directed towards the Sun, and its magnitude varied between about 1 and 8 nT, with current values around 3 nT. There were no extended periods with Bz smaller than -5 nT. Continued enhanced solar wind conditions are expected on June 3.

Quiet to active conditions (K Dourbes between 2 and 4; NOAA Kp between 1 and 4) were registered in the past 24 hours. Active geomagnetic levels (K Dourbes = 4) are possible on June 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 and 5, a return to quiet to unsettled geomagnetic levels is expected (K Dourbes < 4), with a chance for active intervals (K Dourbes = 4) in the first half of June 4.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 014, sur la base de 20 stations.

Indices solaires pour 02 Jun 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	074
AK Chambon La Forêt	025
AK Wingst	018
Ap estimé	020
Nombre international de taches solaires estimé	024 - Basé sur 26 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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