Het archief bekijken van woensdag 9 april 2014

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2014 Apr 09 1222 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
09 Apr 2014	130	004
10 Apr 2014	133	004
11 Apr 2014	135	005

Bulletin

The Sun produced only one single C-class flare, originating from Catania sunspot region 13 (NOAA AR 2031). More C-class flares are expected during the next 48 hours, from Catania sunspot regions 8, 13 and 18 (NOAA ARs 2026, 2031 and 2032 respectively). There is also a slight chance for an M-class flare. A full halo CME was visible in coronagraphic imagery. It was first visible in LASCO C2 images at 23:48 UT, April 8 as a partial halo (angular width of around 200 degrees), and evolved further to a full halo CME. First measurements in STEREO B/COR2 were at 00:25 UT, April 9. It concerns a backsided CME and therefore we do not expect the CME to be geoeffective. Two recurrent coronal holes (centred near S45E05 and N25E05) have reached the central meridian and are expected to arrive near Earth during the second half of April 12. No Earth-directed CMEs were observed. Solar wind speed measured by ACE fluctuated between 380 and 500 km/s. The magnitude of the interplanetary magnetic field reached a maximum of 6 nT, with a mainly positive Bz component. Current magnetic conditions are quiet and are expected to remain so for the next 48 hours. The arrival of the CH high speed stream might result in active conditions from April 12 on.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 069, gebaseerd op 23 stations.

Zon indexen voor 08 Apr 2014

Wolfgetal Catania	144
10cm zonneflux	132
AK Chambon La Forêt	007
AK Wingst	004
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	083 - Gebaseerd op 30 stations

Overzicht opvallende gebeurtenissen

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

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