Het archief bekijken van woensdag 17 april 2013

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2013 Apr 17 1234 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
17 Apr 2013	108	006
18 Apr 2013	107	006
19 Apr 2013	106	009

Bulletin

Six sunspot groups were reported by Catania today. The flaring activity was at the low C-class level, and the strongest flare reported was the long duration C3.5 flare peaking at 21:32 UT on April 16. The flare originated from the Catania sunspot group 43 (NOAA AR 1719) situated at that moment close to the west solar limb. The flare was associated with the coronal dimming. The presence of the coronal dimming gives indication that the flare had an associated CME. However, this cannot be confirmed due to the data gap in SOHO/LASCO and STEREO observations. The flaring activity at the C-class level is probable and the M-class flares are still possible but unlikely. The Earth is inside a slow solar wind with a speed of about 350 km/s. The interplanetary magnetic field magnitude is about 4 nT. The Bz component of the interplanetary magnetic field is fluctuating with the occasional intervals of its negative values (up to -5 nT). The geomagnetic conditions are quiet and expected to remain so.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 062, gebaseerd op 08 stations.

Zon indexen voor 16 Apr 2013

Wolfgetal Catania	109
10cm zonneflux	113
AK Chambon La Forêt	010
AK Wingst	005
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	067 - Gebaseerd op 20 stations

Overzicht opvallende gebeurtenissen

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

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