Affichage des archives de samedi, 18 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 18 1221 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
18 Oct 2014	151	014
19 Oct 2014	151	012
20 Oct 2014	151	012

Bulletin

During the past 24 hours, one M flare and six C flares were released by beta-gamma region NOAA AR 2192, the region close to the east limb that had already released three M flares this week. The long duration M1.6 flare peaked at 7:58 UT on October 18. In the next 48 hours, M flares are probable, with a chance for an X flare, especially from AR 2192. A faint halo CME was first observed by LASCO C2 at 10:00 UT on October 17. Based on the absence of corresponding events in SDO imagery, this CME is probably backward, and will probably not become geo-effective. Over the last 24 hours the solar wind speeds observed by ACE varied between about 385 and 535 km/s, with current speed values around 440 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) varied between 0.5 and 8.5 nT, with current values around 6.5 nT. Geomagnetic conditions during the last 24 hours were quiet to active (K Dourbes between 2 and 4; NOAA Kp between 1 and 4). Quiet geomagnetic levels (K Dourbes < 4) with active excursions (K Dourbes = 4) are expected on October 18, 19 and 20.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 042, sur la base de 13 stations.

Indices solaires pour 17 Oct 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	146
AK Chambon La Forêt	014
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	045 - Basé sur 16 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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