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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Dec 25 1257 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
25 Dec 2015	132	006
26 Dec 2015	131	006
27 Dec 2015	130	005

Bulletin

Only two weak C-class flares were observed during the past 24 hours, both in the NOAA AR 2473 (Catania number 5). The strongest flare was the C2.1 flare peaking at 09:35 UT. We expect flaring activity on the C-level, with an isolated M-class flare possible but unlikely. The Earth is currently inside a solar wind flow with an intermediate speed (around 480 km/s). The interplanetary magnetic field magnitude is average (5-6 nT). The geomagnetic conditions are on the quiet to unsettled levels and are expected to remain so.

Today's estimated international sunspot number (ISN): 084, based on 09 stations.

Solar indices for 24 Dec 2015

Wolf number Catania	///
10cm solar flux	133
AK Chambon La Forêt	///
AK Wingst	012
Estimated Ap	011
Estimated international sunspot number	062 - Based on 20 stations

Noticeable events summary

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

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