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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Dec 26 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
26 Dec 2015	124	007
27 Dec 2015	124	007
28 Dec 2015	124	007

Bulletin

Flaring activity in the past 24 hours reached only the B-class level. The most dynamic active region on the disk is NOAA AR 2473 (beta- gamma, Catania nr 5). As this active region is increasing in shear and complexity, we expect a return to C-class flaring with 40% chance for an M-class flare. A smaller chance for C-class flaring is also possible from AR 2472 (beta, Catania nr 4). The Earth is currently inside a solar wind flow with an intermediate speed (around 550 km/s). The interplanetary magnetic field magnitude is average(5-6 nT). These conditions are expected to persist in the coming 48 hours, geomagnetic activity is expected to remain below Kp=4.

Today's estimated international sunspot number (ISN): 057, based on 16 stations.

Solar indices for 25 Dec 2015

Wolf number Catania	///
10cm solar flux	126
AK Chambon La Forêt	///
AK Wingst	008
Estimated Ap	008
Estimated international sunspot number	080 - Based on 13 stations

Noticeable events summary

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

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