Affichage des archives de dimanche, 23 mars 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Mar 23 1312 UTC

Prévisions SIDC

Éruptions solaires

Eruptive (C-class flares expected, probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
23 Mar 2014	150	010
24 Mar 2014	150	006
25 Mar 2014	150	006

Bulletin

GOES reported a long duration C flare early this morning, March 23. An EUV wave was seen in SDO/AIA 193 images originating from the location of NOAA AR 2014. A CME is visible in LASCO/C2 from 5:12UT (data gap from 0:48UT until 5:12UT). A first estimate of the speed based on STEREO B/COR2 images gives a value around 800 km/s. A glancing blow is not excluded on March 26-27. We expect more C-flaring activity. The probability for M-flares is around 40%. ACE parameters show an increase in the solar wind magnetic field strength from March 21 followed by a decrease from late March 22. The solar wind speed picked up gradually from March 22. The solar wind blows today, March 23 at a speed of around 450 km/s with a lower density compared with the previous days. This behaviour of the solar wind parameters is typically associated with the interaction of a slow and fast solar wind. The fast solar wind can be probably linked with the equatorial coronal hole that was at the central meridian on March 20.The geomagnetic impact is negligible. We expect quiet geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 114, sur la base de 11 stations.

Indices solaires pour 22 Mar 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	155
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	005
Nombre international de taches solaires estimé	114 - Basé sur 14 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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