Het archief bekijken van vrijdag 23 december 2016

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2016 Dec 23 1252 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
23 Dec 2016	075	024
24 Dec 2016	076	016
25 Dec 2016	075	007

Bulletin

Solar activity was very quiet in the past 24 hours. No flares were observed. The only numbered NOAA active region (AR) 2620 is rotating across the west solar limb. A slow moving CME observed at the east limb starting at 21:34 UT (21-Dec-2016) as detected by CACTUS is not expected to be geoeffective. Solar protons have remained at background levels over the past 24 hours. There are no significant Active Regions (AR) on the Sun, therefore solar activity is expected to remain low over the next 24 hours with a small chance of B-class flares. The solar wind speed has decreased from 720 km/s to 620 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 4 nT and 7 nT. The Bz component has fluctuated between -5 nT and +5 nT. Geomagnetic conditions ranged between Kp index 3-4 (NOAA) and local K index 2-4 (Dourbes) over the past 24 hours, with the enhanced values occurring due to fluctuating Bz and high speed solar wind generated from a large positive polarity coronal hole (CH). Enhanced solar wind conditions are expected to persist over the next couple of days due to the CH High Speed Stream (HSS). As a consequence Geomagnetic conditions are expected to be unsettled to active for the next couple of days, with a possibility of minor storms.

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

Zon indexen voor 22 Dec 2016

Wolfgetal Catania	///
10cm zonneflux	075
AK Chambon La Forêt	033
AK Wingst	026
Geschatte Ap	027
Geschat internationaal zonnevlekkengetal	016 - Gebaseerd op 13 stations

Overzicht opvallende gebeurtenissen

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

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