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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2016 Dec 11 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
11 Dec 2016	072	019
12 Dec 2016	073	007
13 Dec 2016	074	007

Bulletin

NOAA AR 2615 produced a C4.0 flare after rotating over the west limb with peak at 17:15 UT on 10 December, a CME was observed in association to it (not Earth affecting). There are no ARs visible on the solar disk. Therefore solar activity is expected to remain low over the next 48 hours, with slight chances of still observing a C-class flare from NOAA AR 2615.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The Earth is still inside a high speed solar wind stream from a coronal hole. Geomagnetic conditions reached active values at planetary level (Kp=4) but only unsettled locally at Dourbes (K=3). Solar wind speed is now at 600 km/s with interplanetary magnetic fields of 4 nT. The effect of the coronal hole is expected to fade out in 24 h. Unsettled to active conditions can still be expected today and quiet conditions as of tomorrow.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 10 Dec 2016

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	///
AK Wingst	018
Estimated Ap	017
Estimated international sunspot number	000 - Based on 19 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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