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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Jan 16 1241 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
16 Jan 2016	101	007
17 Jan 2016	098	006
18 Jan 2016	097	011

Bulletin

The strongest, out of few C-class flares reported during last 24 hours, was the C1.7 flare (peaking at 15:25 UT) on January 15. We expect C-class flares in the coming hours, in particular from Catania sunspot group 7 (NOAA AR 2480) which was source of the majority of flaring activity during the last 36 hours. No Earth directed CMEs were observed in the last 24 hours. The solar wind speed is stable keeping the value of about 400 km/s. The interplanetary magnetic field magnitude is about 5nT. Geomagnetic conditions were quiet during last 24 hours. The arrival of the halo CME, associated with the filament eruption on January 14, is expected at the Earth late on January 18 or in the morning of January 19. We expect quiet geomagnetic conditions in the coming hours.

Today's estimated international sunspot number (ISN): 039, based on 18 stations.

Solar indices for 15 Jan 2016

Wolf number Catania	///
10cm solar flux	104
AK Chambon La Forêt	007
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	042 - Based on 18 stations

Noticeable events summary

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

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