Affichage des archives de lundi, 9 mai 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 May 09 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
09 May 2016	083	040
10 May 2016	084	013
11 May 2016	085	008

Bulletin

Only two B-class flare was reported during last 24 hours. The most intensive one was B9.4 flare (peaked at 05:23 UT, on May 09), originated from the NOAA AR 2541 which currently has alpha configuration of its photospheric magnetic field. Three active regions (AR 2541, AR 2542, AR 2543) are currently situated around the central meridian. The AR 2540 and 2539 will pass over the west limb in approximately 24 hrs. Simultaneously two returning ARs will appear in 24 hrs approximately. No Earth directed CMEs were observed in the last 24 hours. We can expect only low C-class flares in the next 24 hours. The solar wind speed is continuously increasing due to equatorial coronal hole observed at the central meridian in the morning of May 06. The current solar wind value is 750 km/s and the interplanetary magnetic field magnitude is about 5 nT. The current Bz value is around -5 nT. Number of long intervals of negative value of the Bz component of the interplanetary magnetic field (down to -10 nT), and fast solar wind speed (about 670 km/s) induced continuation of the geomagnetic storm which is now lasting for more than 24 hours. NOAA reported Kp=7 around midnight of May 08 and early morning of May 09, and the local station at Dourbes reported K=5. Kioto reported Dst=-101 index around midnight of May 08 and early morning of May 09. Geomagnetic conditions are expected to remain active within next 24 hrs, with no more strong increase in Kp values.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 050, sur la base de 17 stations.

Indices solaires pour 08 May 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	084
AK Chambon La Forêt	075
AK Wingst	055
Ap estimé	060
Nombre international de taches solaires estimé	044 - Basé sur 35 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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