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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Jan 02 1215 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
02 Jan 2015	141	009
03 Jan 2015	144	008
04 Jan 2015	147	013

Bulletin

There are currently 8 sunspot regions visible on the solar disk. NOAA 2253 produced the only C-class flare of the period (C1.8 peaking at 19:05UT). NOAA 2253 has gained in sunspot area, and has developed a weak delta structure in its leading portion. No significant or earth-directed CMEs were detected. Further C-class flaring is expected, with a slight chance on an M-class flare from NOAA 2253. The geomagnetic field was quiet to unsettled. Solar wind speed varied between 410 and 450 km/s, while Bz was mostly negative and varied between -4 and +4 nT. Quiet to unsettled conditions are expected. The extension of a southern polar coronal hole extension is transiting the CM. Its high speed stream may influence the geomagnetic field starting on 04 January.

Today's estimated international sunspot number (ISN): 090, based on 10 stations.

Solar indices for 01 Jan 2015

Wolf number Catania	///
10cm solar flux	138
AK Chambon La Forêt	014
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	069 - Based on 16 stations

Noticeable events summary

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

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