Affichage des archives de jeudi, 24 décembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Dec 24 1237 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
24 Dec 2015	137	016
25 Dec 2015	137	012
26 Dec 2015	137	006

Bulletin

NOAA ARs 2472 and 2473 (Catania numbers 4 and 5 respectively) have beta-gamma configuration of their photospheric magnetic field and continue to produce flaring activity. The strongest flare of the past 24 hours was a complex event early today, with the first peak at 02:12 UT (M1.1 in the NOAA AR 2473) and the second peak at 06:16 UT (C5.9 in the NOAA AR 2473 and a nearly simultaneous X-ray flux increase in NOAA AR 2472). The event was associated with a CME first visible in the SOHO/LASCO C2 field of view at 06:12 UT. The full angular width of the CME is not clear yet and will be further evaluated as more LASCO data will be available, although it is unlikely to be a halo CME. We expect C-class flaring in the next 24 hours, with around 50 percent chance for an M-class flare. The Earth is currently inside a solar wind flow with an intermediate speed (around 500 km/s). The interplanetary magnetic field magnitude has been slightly elevated (7-8 nT) in the recent hours, so mostly unsettled with occasionally active geomagnetic conditions were reported. We expect unsettled to possibly active geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 058, sur la base de 08 stations.

Indices solaires pour 23 Dec 2015

Nombre de Wolf, observé par Catania	089
Flux solaire à 10 cm	///
AK Chambon La Forêt	020
AK Wingst	016
Ap estimé	014
Nombre international de taches solaires estimé	066 - 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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