Het archief bekijken van maandag 25 december 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Dec 25 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
25 Dec 2017	076	007
26 Dec 2017	075	013
27 Dec 2017	074	010

Bulletin

Solar activity was low, no C-class flares in past 24 h. There is only one region visible on disk (Catania group 67, NOAA active region 2692) with beta magnetic field configuration. C-class flaring is possible although not very likely.

Proton flux levels are at background values and are expected to remain so. No Earth-directed seems occurred.

Solar wind speed is at 480 km/s with interplanetary magnetic field magnitude of 6 nT. The influence of the high speed stream from a coronal hole is fading. It produced only unsettled levels at planetary levels (Kp up to 3) and isolated active conditions locally at Dourbes (KDourbes up to 4). The coronal hole has irregular shape and is divided in two parts, the southern part (extension of the southern polar coronal hole) may still influence the Earth within 48 h. Quiet to active conditions can be expected.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 024, gebaseerd op 07 stations.

Zon indexen voor 24 Dec 2017

Wolfgetal Catania	///
10cm zonneflux	076
AK Chambon La Forêt	024
AK Wingst	015
Geschatte Ap	014
Geschat internationaal zonnevlekkengetal	026 - Gebaseerd op 13 stations

Overzicht opvallende gebeurtenissen

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

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