Het archief bekijken van vrijdag 11 april 2014

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2014 Apr 11 1240 UTC

SIDC Prognose

Zonnevlammen

Active (M-class flares expected, probability >=50%)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
11 Apr 2014	145	010
12 Apr 2014	155	016
13 Apr 2014	160	008

Bulletin

Solar activity has risen significantly during the past 24 hours and seven C-class flares were produced. Most of the flares were originating from the East limb near 15 degrees south. At that latitude, several regions are turning onto the visible side of the solar disk, including Catania sunspot region 24 (NOAA AR 2035). The strongest flare was a C9.4 flare peaking at 11:24 UT on April 11 from sunspot region 24. Further analysis will be needed to determine whether other solar phenomena were associated with this event. The slow partial halo CME with first measurement in LASCO at 0h48 UT of April 10, at most a shock can be expected to arrive. More C-class flares are expected from the active regions that are currently rotating around the East limb. M-class flares are also likely during the next 48 hours. An X-class flare is not excluded, but is not likely. Interplanetary magnetic field measured by ACE currently is variable with a magnitude ranging from 0 to 9 nT and a Bz fluctuating between -5 and +5 nT. Bz is currently negative, resulting in unsettled local geomagnetic conditions (local K=3 at Dourbes). Solar wind speed is around 380 km/s. Magnetic conditions are expected to be quiet to unsettled. At the arrival of the CH high speed stream (from April 12 on) active conditions might be observed.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 047, gebaseerd op 16 stations.

Zon indexen voor 10 Apr 2014

Wolfgetal Catania	088
10cm zonneflux	137
AK Chambon La Forêt	006
AK Wingst	002
Geschatte Ap	002
Geschat internationaal zonnevlekkengetal	044 - Gebaseerd op 24 stations

Overzicht opvallende gebeurtenissen

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

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