Viewing archive of Sunday, 17 January 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Jan 17 1231 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

	10cm flux	Ap
17 Jan 2016	098	007
18 Jan 2016	096	009
19 Jan 2016	095	013

Bulletin

Solar activity is low, without C-class flares reported. The strongest reported flare in last 24 hours was the B4.2 flare (peaked at 20:09 UT on January 16) from the Catania sunspot group 7 (NOAA AR 2480). The C-class flares are still possible but not very probable in the coming hours (probability < 30%). No Earth directed CMEs were observed in the last 24 hours. The Earth is inside the slow solar wind with the speed of about 350 km/s. The interplanetary magnetic field magnitude is fluctuating between 4 and 8 nT. The arrival of the halo CME, associated with the filament eruption on January 14, which is expected at the Earth late on January 18 or in the morning of January 19, might induce unsettled to active geomagnetic conditions. We expect quiet geomagnetic conditions in the coming hours.

Today's estimated international sunspot number (ISN): 057, based on 17 stations.

Solar indices for 16 Jan 2016

Wolf number Catania	///
10cm solar flux	100
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	040 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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