Het archief bekijken van vrijdag 8 december 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Dec 08 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
08 Dec 2017	067	005
09 Dec 2017	068	007
10 Dec 2017	071	007

Bulletin

The solar activity remained quiet over the past 24 hours. No flare has been recorded. The unique sunspot (Catania sunspot group 65, NOAA Active Region 2690) on the visible disc showed a decay in magnetic complexity. Quiet flaring conditions are expected for the next 24-hour period.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind speed has continued to gradually decrease from 530 km/s to 460 km/s. The interplanetary magnetic field magnitude remained below 5 nT, and the Bz component fluctuated between -4 and 4 nT. The solar wind conditions are expected to continue to decline and return to nominal conditions by tomorrow. A narrow northern polar coronal hole that extends down up to latitude 10-degree North is currently facing Earth. The high speed solar wind stream associated with this coronal hole is expected to reach Earth by Dec 11.

The geomagnetic conditions were globally quiet to unsettle with K-Dourbes and Kp ranging between 1 and 3, except on Dec 07 at 15:00 UT the local station at Dourbes reported active geomagnetic conditions (K-Dourbes = 4) for a short duration. The geomagnetic activity is expected to be quiet for the next following days until the arrival of the high speed stream on Dec 11.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 14 stations.

Zon indexen voor 07 Dec 2017

Wolfgetal Catania	011
10cm zonneflux	068
AK Chambon La Forêt	016
AK Wingst	012
Geschatte Ap	011
Geschat internationaal zonnevlekkengetal	010 - Gebaseerd op 12 stations

Overzicht opvallende gebeurtenissen

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

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