Het archief bekijken van donderdag 6 april 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Apr 06 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
06 Apr 2017	083	004
07 Apr 2017	081	005
08 Apr 2017	079	005

Bulletin

Solar activity was at low levels during the period. The strongest event was a C1.1 flare peaking at 10:26UT. This flare was produced by decaying NOAA 2645. This region still has magnetic mixing in its trailing portion. The 10.7cm radio flux dropped from 94 sfu on 4 April to 85 sfu on 5 April. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels.

C-class flaring is expected, with a small chance on an isolated M-class flare.

Earth environment was under the influence of a moderate speed stream from a negative coronal hole. Solar wind speed gradually increased from 400 km/s at noon to 500 km/s by midnight, and has been steady since. Bz fluctuated between -7 and +4 nT. The interplanetary magnetic field was mostly directed towards the Sun.

The geomagnetic field was at quiet to unsettled levels, with an active episode during the 21-24UT interval. Quiet to unsettled conditions are expected, with a chance on an active episode.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 037, gebaseerd op 18 stations.

Zon indexen voor 05 Apr 2017

Wolfgetal Catania	054
10cm zonneflux	085
AK Chambon La Forêt	017
AK Wingst	012
Geschatte Ap	011
Geschat internationaal zonnevlekkengetal	052 - Gebaseerd op 32 stations

Overzicht opvallende gebeurtenissen

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

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