Affichage des archives de mercredi, 3 août 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Aug 03 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
03 Aug 2016	076	032
04 Aug 2016	076	021
05 Aug 2016	076	007

Bulletin

Solar activity was very low. No C flares or halo CMEs were observed. Solar activity is expected to remain very low (no C flaring) for the next 24 hours. Solar wind speed measured by DSCOVR suddenly increased from about 355 to 385 km/s around 12h UT on August 2, and gradually further to a maximum of about 460 km/s, after the solar wind density and the magnitude of the Interplanetary Magnetic Field had been rising since about 4h UT to a maximum of about 40 particles per cc and 25 nT, respectively. These phenomena are most probably due to the arrival of a predicted high speed stream associated with a positive coronal hole. In combination with Bz values of down to -20 nT, this resulted in active periods for K Dourbes and even minor geomagnetic storm periods for NOAA Kp between 21h UT on August 2 and 9h UT on August 3. Further active to minor geomagnetic storm periods (K Dourbes = 4-5) are possible on August 3. Active conditions are possible on August 4, and a return to quiet to unsettled geomagnetic conditions is expected on August 5.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.

Indices solaires pour 02 Aug 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	075
AK Chambon La Forêt	044
AK Wingst	021
Ap estimé	021
Nombre international de taches solaires estimé	013 - 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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