Het archief bekijken van vrijdag 3 april 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 Apr 03 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Minor storm expected (A>=30 or K=5)

Proton Flux monitor

Quiet

	10cm flux	Ap
03 Apr 2015	121	021
04 Apr 2015	123	021
05 Apr 2015	128	012

Bulletin

The strongest flare of the past 24 hours was the C1.7 flare peaking at 07:26 UT today in the Catania sunspot group 21 (no NOAA number yet) that has just crossed the east limb. More C-class flares are expected in this group, with a small chance for an M-class flare. The solar wind speed is currently around 550 km/s, probably indicating the imminent arrival of a fast stream from the trans-equatorial coronal hole. The interplanetary magnetic field (IMF) is currently around 7 nT. Yesterday evening, in the interaction region between the fast stream and the preceding slow flow, the IMF Bz component stayed negative (down to -10 nT) for around 3 hours, so active geomagnetic conditions (K = 4) were reported by IZMIRAN and NOAA. (Intervals of K = 5 reported this morning by Dourbes are most probably spurious.) We expect active to minor storm conditions in the coming hours as the Earth will be going through the fast solar wind stream.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 021, gebaseerd op 10 stations.

Zon indexen voor 02 Apr 2015

Wolfgetal Catania	///
10cm zonneflux	121
AK Chambon La Forêt	029
AK Wingst	015
Geschatte Ap	017
Geschat internationaal zonnevlekkengetal	025 - Gebaseerd op 20 stations

Overzicht opvallende gebeurtenissen

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

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