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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Jan 15 1259 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
15 Jan 2016	103	006
16 Jan 2016	104	007
17 Jan 2016	101	007

Bulletin

After about two weeks without C-class flares, two C-class flares were reported this morning. The strongest one was C2.8 flare (peaked at 02:39 UT) which originated from the Catania sunspot group 7 (NOAA AR 2480). We expect isolated C-class flares in the coming hours (probability is > 50%). The large filament situated at the southern solar hemisphere erupted at about 22:15 UT on January 14. The filament eruption was associated with coronal dimming and partial halo CME. The CME was first seen in the SOHO LASCO C2 field of view at about 23:36 UT, had angular width of about 280 degrees and speed of about 250 km/s. This CME might arrive at the Earth late on January 18 or in the morning of January 19. The Earth is inside the slow solar wind speed (400 km/s) and the interplanetary magnetic field magnitude is about 4 nT. Geomagnetic conditions are quiet and we expect them to remain so in the coming hours.

Today's estimated international sunspot number (ISN): 041, based on 13 stations.

Solar indices for 14 Jan 2016

Wolf number Catania	///
10cm solar flux	103
AK Chambon La Forêt	015
AK Wingst	008
Estimated Ap	008
Estimated international sunspot number	040 - Based on 17 stations

Noticeable events summary

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

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