Het archief bekijken van woensdag 12 juni 2019

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2019 Jun 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 Jun 2019	069	012
13 Jun 2019	068	015
14 Jun 2019	068	008

Bulletin

Solar activity was at very low levels. The solar disk was spotless. No coronal mass ejections (CME) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind parameters were at nominal levels until around 09UT when the interplanetary magnetic field changed its direction from towards to away from the Sun. This coincided with a gradual increase of the solar wind speed from about 300 km/s to its current 370 km/s, and Bz starting to vary between -5 and +5 nT. Solar wind density, which had been steadily increasing from 5/cm3 to 24/cm3 over the period, quickly dropped to 4/cm3 after 09UT. These changes in the solar wind parameters reflect the arrival of the co-rotating interaction region (CIR) and the wind stream associated with the extension of the positive polarity northern polar coronal hole (CH). Quiet geomagnetic conditions were observed.

Quiet to active geomagnetic conditions are expected in response to the wind stream from the CH.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 15 stations.

Zon indexen voor 11 Jun 2019

Wolfgetal Catania	000
10cm zonneflux	070
AK Chambon La Forêt	006
AK Wingst	002
Geschatte Ap	002
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 32 stations

Overzicht opvallende gebeurtenissen

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

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