Het archief bekijken van donderdag 10 september 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 Sep 10 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
10 Sep 2015	081	014
11 Sep 2015	080	020
12 Sep 2015	078	010

Bulletin

Only four small sunspot groups are presently visible on the solar disc. The flaring activity is on the B-class level and we expect it to remain so in the following 24 hours. No Earth directed CMEs were observed during last 24 hours.

The solar wind speed is currently 430 km/s, and the interplanetary magnetic field magnitude is about 9 nT. The long interval of the negative value of the Bz component (down to -8 nT) and at that moment still high solar wind speed (about 430 km/s) induced geomagnetic storm conditions lasting from about 18 UT yesterday until 03 UT today, NOAA reported Kp=6 and local station Dourbes reported K=5. The fast flow, associated with the elongated equatorial coronal hole (20S to 20N) which crossed central meridian in the morning of September 08, is expected late this evening or tomorrow morning. Additionally, the fast flow from the low latitude extension of the northern polar coronal hole which crossed the central meridian yesterday morning is expected late on September 11 or in the morning of September 12. Currently the geomagnetic conditions are quiet and we expected these conditions to persist in the coming hours. However, arrival of the fast flow can induced active to geomagnetic storm conditions later today and tomorrow morning.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 044, gebaseerd op 19 stations.

Zon indexen voor 09 Sep 2015

Wolfgetal Catania	///
10cm zonneflux	082
AK Chambon La Forêt	064
AK Wingst	051
Geschatte Ap	053
Geschat internationaal zonnevlekkengetal	046 - Gebaseerd op 25 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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