Affichage des archives de samedi, 15 novembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Nov 15 1415 UTC

Prévisions SIDC

Éruptions solaires

Active (M-class flares expected, probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
15 Nov 2014	160	022
16 Nov 2014	165	017
17 Nov 2014	167	011

Bulletin

The strongest flare in the past 24 hours was the M3.2 flare on November 15, with the peak time at 12:03 UT. This long-duration flare originated from the NOAA AR 2209. From the currently available data it seems that the flare was confined, i.e., without the associated CME. However, this will be confirmed once the coronagraph data become available. The NOAA ARs 2209 and 2208 are growing in the area and the number of sunspots and they both currently have beta-gamma configuration of the photospehric magnetic field. We expect more C-class and M-class flares from these active regions. An isolated X-class flare is possible from the NOAA AR 2209. The NOAA AR 2205 is currently situated at the west solar limb, a major eruption from this active region is still possible, but not very probable. Since such an eruption may lead to a proton event we maintain the warning conditions for a proton event. The solar wind speed is currently about 500 km/s, and the interplanetary magnetic field magnitude amounts about 9 nT. We confirm the arrival of the sector boundary at approximately 06:00 UT on November 14. Due to the sector boundary change, geomagnetic conditions are currently unsettled to active (local stations Dourbe and Izmiran reported value of K=4) and expected to remain so in the coming hours. The arrival of the fast flow, associated with the extended low latitude coronal hole which reached the central meridian in the morning of November 13, is expected later today or tomorrow morning. We expect that it will induce unsettled to active geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 079, sur la base de 07 stations.

Indices solaires pour 14 Nov 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	161
AK Chambon La Forêt	023
AK Wingst	014
Ap estimé	012
Nombre international de taches solaires estimé	081 - 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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