Affichage des archives de dimanche, 24 mars 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Mar 24 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
24 Mar 2019	079	008
25 Mar 2019	076	013
26 Mar 2019	072	007

Bulletin

NOAA AR 2736 has decreased in size and complexity (it has now beta magnetic field configuration) and did not produce anymore C-class flares in the past 24 h. It did produce many B-class flares, including a B9.9 peaking at 23:59 UT on March 23. The region is now rotating over the west limb, C-class flares remain possible but less likely.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is 265 km/s with interplanetary magnetic fields of 3 nT. The CME from March 20, expected to arrive yesterday (with 50% probability) has not done so yet. It may have been slowed down by the very slow solar wind that we are seeing now (in that case it could arrive today), or it may have missed the Earth. The fast solar wind emanating from a negative polarity equatorial coronal hole may affect the Earth in 48 h. Quiet conditions were observed in the past hours, the situation will change only if the CME arrives, in that case K up to 5 can be expected.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 017, sur la base de 24 stations.

Indices solaires pour 23 Mar 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	079
AK Chambon La Forêt	003
AK Wingst	///
Ap estimé	002
Nombre international de taches solaires estimé	026 - Basé sur 17 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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