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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2015 Dec 16 1230 UTC

SIDC Forecast

Sluneční erupce

C-class flares expected, (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
16 Dec 2015	124	008
17 Dec 2015	126	007
18 Dec 2015	128	007

Bulletin

NOAA AR 2468 produced two C flares in the past 24 hours. The brightest flare was a C6.6 flare which peaked at 8:34 UT on December 16. C flares are possible within the next 24 hours, with a chance for an M flare. The speed of the solar wind gradually increased from about 530 to 650 km/s, and decreased again with current values near 540 km/s. The magnitude of the Interplanetary Magnetic Field varied between 3 and 10 nT, and is currently around 4 nT. During the past 24 hours, quiet to unsettled geomagnetic levels were registered (K Dourbes between 1 and 3, NOAA Kp between 1 and 4). Quiet to unsettled geomagnetic conditions (K Dourbes < 4) are expected on December 16, 17, and 18.

Today's estimated international sunspot number (ISN): 059, based on 06 stations.

Solar indices for 15 Dec 2015

Wolf number Catania	100
10cm solar flux	119
AK Chambon La Forêt	020
AK Wingst	020
Estimated Ap	018
Estimated international sunspot number	062 - Based on 16 stations

Noticeable events summary

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

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