Het archief bekijken van woensdag 12 april 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Apr 12 1230 UTC

SIDC Prognose

Zonnevlammen

Quiet conditions (<50% probability of C-class flares)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
12 Apr 2017	075	010
13 Apr 2017	076	010
14 Apr 2017	077	008

Bulletin

Solar activity was at low levels during the period. The strongest event was a B1.4 flare peaking at 19:45 UT yesterday. This flare was produced by NOAA 2650 (McIntosh: Cao; Mag.Type: Beta). No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10MeV proton flux was at nominal levels. B-class flaring is expected, with a small chance on an isolated C-class flare. Solar wind speed increased from about 420 km/s to values around 490 km/s (00UT, 12/04), but then decreased again till 450 km/s. The total interplanetary magnetic field (IMF) strength, as recorded by the DSCOVR satellite, has been around 5 nT. Bz fluctuated between -4.5 and +4 nT, being mostly negative. Solar wind parameters are expected to decline further today. The geomagnetic field was at quiet to unsettled levels, Kp NOAA index: 2-3, local K Dourbes index: 1-3. Quiet to unsettled conditions are expected, with a chance on an active episode.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 020, gebaseerd op 20 stations.

Zon indexen voor 11 Apr 2017

Wolfgetal Catania	015
10cm zonneflux	075
AK Chambon La Forêt	023
AK Wingst	015
Geschatte Ap	014
Geschat internationaal zonnevlekkengetal	014 - Gebaseerd op 30 stations

Overzicht opvallende gebeurtenissen

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

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