Affichage des archives de vendredi, 18 mars 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Mar 18 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
18 Mar 2016	090	007
19 Mar 2016	095	006
20 Mar 2016	100	005

Bulletin

Flaring activity at the frontside of the solar disk was very low, without any C-class flares. NOAA active region 2524 (Catania 49) turned into a beta region, while NOAA 2519 (Catania 44) remained stable. All other regions decayed or even turned into plage. A filament eruption occurred around UT midnight near S10W30, but no clear related CME was observed in coronagraphic data. There is a probability of 25% for C-class flares.

The solar wind conditions indicated the continuation of the high speed stream influence. Solar wind speed has gradually decreased from 550-600 km/s to current values near 450 km/s. The magnetic field magnitude remained near 5-7 nT, with a fluctuating north-south component. A coronal hole in the northern hemisphere has crossed the central meridian, which is expected to cause a high speed stream near Earth within 2 to 3 days. Geomagnetic conditions were mainly quiet (K=0-2) to unsettled (K=3), which is expected to remain so for the next 24 to 48 hours. Though, an isolated period of active conditions (K=4) is possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 040, sur la base de 13 stations.

Indices solaires pour 17 Mar 2016

Nombre de Wolf, observé par Catania	077
Flux solaire à 10 cm	092
AK Chambon La Forêt	021
AK Wingst	024
Ap estimé	026
Nombre international de taches solaires estimé	059 - Basé sur 30 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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