Affichage des archives de lundi, 10 mars 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Mar 10 1308 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
10 Mar 2014	146	009
11 Mar 2014	146	007
12 Mar 2014	146	007

Bulletin

There were four low M flares and twelve C flares on the Sun during the past 24 hours, the large majority being released by NOAA AR 12002. The brightest one was an M1.1 flare from NOAA AR 12002 peaking at 00:26 UT on March 10. In the next 48 hours, the probability for C flares is very high (over 95%) and for M flares around 70%, mainly from beta-gamma-delta region NOAA AR 12002. An X flare is possible but unlikely. The halo CME detected by CACTUS on LASCO C2 imagery from 3:12 UT on March 9, is probably a backsided event related to an eruption in NOAA AR 11986, as can be seen in STEREO B images. This CME is not expected to be geoeffective. Since 12h UT on March 9, solar wind speed as observed by ACE decreased from around 340 km/s to around 270 km/s around 0h UT on March 10, while the magnitude of the Interplanetary Magnetic Field (IMF) varied between 1.5 and 4.5 nT in this period. From then onwards, solar wind speed increased again to about 340 km/s, with the magnitude of the IMF fluctuating between 1.5 and 6 nT. Over the past 24 hours, geomagnetic conditions were quiet (K Dourbes between 0 and 3; NOAA Kp between 0 and 3). Quiet geomagnetic levels are expected on March 10, 11, and 12.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 083, sur la base de 17 stations.

Indices solaires pour 09 Mar 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	146
AK Chambon La Forêt	///
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	080 - Basé sur 25 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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