Het archief bekijken van zaterdag 16 mei 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 May 16 1230 UTC

SIDC Prognose

Zonnevlammen

Eruptive (C-class flares expected, probability >=50%)

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
16 May 2015	132	007
17 May 2015	127	016
18 May 2015	122	021

Bulletin

NOAA 2339 and 2342 produced a C2 class flare each. No other flaring events were observed. A large filament in the northeast quadrant erupted shortly before midnight. No obvious x-ray signature was associated with this event. No earth-directed coronal mass ejections (CMEs) have been observed.

Further C-class flaring is expected, with a slight chance on an M-class flare.

Solar wind speed declined further from 530 km/s to its current value of about 430 km/s. Bz varied between -4 and +2 nT. Quiet to unsettled geomagnetic conditions were observed. A recurrent positive polarity coronal hole (CH) has completed its central meridian transit.

The arrival of the 13 May CME and the high speed stream from the aforementioned CH are expected for late 17 or 18 May. This may result in active conditions, with a minor storming episode not excluded. Until then, quiet to unsettled geomagnetic conditions are expected.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 069, gebaseerd op 07 stations.

Zon indexen voor 15 May 2015

Wolfgetal Catania	///
10cm zonneflux	137
AK Chambon La Forêt	011
AK Wingst	008
Geschatte Ap	009
Geschat internationaal zonnevlekkengetal	089 - Gebaseerd op 26 stations

Overzicht opvallende gebeurtenissen

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

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