Het archief bekijken van maandag 10 februari 2014

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2014 Feb 10 1311 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm flux	Ap
10 Feb 2014	167	010
11 Feb 2014	168	005
12 Feb 2014	170	008

Bulletin

The solar flaring activity is decreasing in last few days. During the past 24 hours four C-class flares and an isolated M class flare were observed. The M1.0 flare which peaked at 16:00 UT on February 9, originated in the active region right behind the east-south-east solar limb. It was accompanied by coronal dimmings, an EIT wave, an erupting prominence and a post-eruption arcade. The associated full halo CME was first seen in the SOHO LASCO C2 field of view at 16:00 UT on February 9. Due to the source region position, we do not expect this CME to arrive at the Earth. From the currently available data, the prominence eruption (in the north-east quadrant of the Sun) observed at about 05:30 UT on February 10 does not seem to be associated with the Earth directed CME. Three out of seven, currently numbered sunspot groups visible on the solar disc, have beta- gamma configurations of the photospheric magnetic field, and still growing. Catania sunspot groups 27 and 28 (NOAA ARs 1968 and 1967 respectively) have rotated behind the west solar limb. Due to the close to the solar limb position of these groups we still keep warning conditions for a proton event. We expect flaring activity on the C-level, with the possibility of an isolated M-class flare. The solar wind speed is currently around 460 km/s, and the interplanetary magnetic field magnitude is stable amounting about 5-6 nT. We expect quiet to unsettled (K<4) geomagnetic conditions in the coming hours.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 098, gebaseerd op 09 stations.

Zon indexen voor 09 Feb 2014

Wolfgetal Catania	///
10cm zonneflux	169
AK Chambon La Forêt	030
AK Wingst	021
Geschatte Ap	021
Geschat internationaal zonnevlekkengetal	104 - Gebaseerd op 11 stations

Overzicht opvallende gebeurtenissen

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

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