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Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 May 20 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
20 May 2019	066	010
21 May 2019	066	017
22 May 2019	066	010

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected. 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.

The solar wind speed has fluctuated between 350 and 415 km/s over the past 24 hours. The total magnetic field strength fluctuated around 6 nT for the first part of the period and then slowly increased to a maximum of around 9 nT at around 7:00 UT. The Bz component fluctuated around 0 nT, ranging between -6.3 and +7.7 nT.

Geomagnetic conditions ranged between Kp index 0-3 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. Quiet to unsettled geomagnetic levels are expected to continue. Some isolated active intervals are also possible, due to the expected arrival of a weak solar wind stream associated with a recurring, negative polarity equatorial coronal hole which traversed the central meridian on 18 May.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 10 stations.

Indices solaires pour 19 May 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	010
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	000 - Basé sur 18 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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