Affichage des archives de samedi, 13 avril 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Apr 13 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
13 Apr 2019	077	009
14 Apr 2019	077	008
15 Apr 2019	076	008

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a B7.1 class flare. Active Region (AR) 2738 (Mcintosh class:Cho; Mag. type:Beta) has produced all the flaring activity, including the B7.1 class flare (note: this peaked at 11:37 UT on 12-Apr-2018, but data was unavailable for yesterdays Forecast), the region has shown some evidence of flux emergence and cancellation in HMI magnetogram observations, this may increase flaring activity. No significant filament channels have been seen on the solar disk. No Earth directed CMEs have been detected. There are no significant low latitude coronal holes on the solar disk. The greater-than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a reasonable chance of a C-class flare from AR 2738.

The solar wind speed has fluctuated between 400 and 460 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 5 nT. The Bz component has fluctuated around 0 nT, ranging between -5 and +4 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 014, sur la base de 18 stations.

Indices solaires pour 12 Apr 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	077
AK Chambon La Forêt	015
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	015 - Basé sur 24 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

<< Aller à l'aperçu quotidien